Add magazine issues admin page.

Marechai/Marechai.csproj

@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
   <PropertyGroup>
     <TargetFramework>netcoreapp3.1</TargetFramework>
-    <Version>4.0.0.1809</Version>
+    <Version>4.0.0.1810</Version>
     <Company>Canary Islands Computer Museum</Company>
     <Copyright>Copyright © 2003-2020 Natalia Portillo</Copyright>
     <Product>Canary Islands Computer Museum Website</Product>

Marechai/Pages/Admin/Details/MagazineIssue.razor

@@ -0,0 +1,191 @@
+@{
+/******************************************************************************
+// MARECHAI: Master repository of computing history artifacts information
+// ----------------------------------------------------------------------------
+//
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2003-2020 Natalia Portillo
+*******************************************************************************/
+}
+
+@page "/admin/magazine_issues/details/{Id:long}"
+@page "/admin/magazine_issues/edit/{Id:long}"
+@page "/admin/magazine_issues/create"
+@using Marechai.Database
+@using Marechai.Database.Models
+@inherits OwningComponentBase<MagazineIssuesService>
+@inject IStringLocalizer<MagazineIssuesService> L
+@inject MagazinesService MagazinesService
+@inject NavigationManager NavigationManager
+@inject IWebHostEnvironment Host
+@inject IJSRuntime JSRuntime
+@inject Microsoft.AspNetCore.Identity.UserManager<ApplicationUser> UserManager
+@inject AuthenticationStateProvider AuthenticationStateProvider
+@attribute [Authorize(Roles = "UberAdmin, Admin")]
+
+
+<h3>@L["Magazine issue details"]</h3>
+<hr />
+
+@if (!_loaded)
+{
+    <p align="center">@L["Loading..."]</p>
+
+    return;
+}
+
+<div>
+    <Field>
+        <FieldLabel>@L["Magazine"]</FieldLabel>
+        <Select Disabled="!_editing" TValue="long" @bind-SelectedValue="@_model.MagazineId">
+            @foreach (var magazine in _magazines)
+            {
+                <SelectItem TValue="long" Value="@magazine.Id">@magazine.Title</SelectItem>
+            }
+        </Select>
+    </Field>
+    <Field>
+        <FieldLabel>@L["Caption using latin script"]</FieldLabel>
+        <Validation Validator="@ValidateCaption">
+            <TextEdit ReadOnly="!_editing" @bind-Text="@_model.Caption">
+                <Feedback>
+                    <ValidationError>@L["Please enter a valid caption."]</ValidationError>
+                </Feedback>
+            </TextEdit>
+        </Validation>
+    </Field>
+    @if (_editing || _model.NativeCaption != null)
+    {
+        <Field>
+            <FieldLabel>@L["Native caption, that is, caption using native script (cyrillic, chinese, etc)"]</FieldLabel>
+            @if (_editing)
+            {
+                <Check TValue="bool" @bind-Checked="@_unknownNativeCaption">@L["Unknown (native caption)"]</Check>
+            }
+            @if (!_editing ||
+                 !_unknownNativeCaption)
+            {
+                <Validation Validator="@ValidateNativeCaption">
+                    <TextEdit Disabled="!_editing" @bind-Text="@_model.NativeCaption">
+                        <Feedback>
+                            <ValidationError>@L["Please enter a valid native caption."]</ValidationError>
+                        </Feedback>
+                    </TextEdit>
+                </Validation>
+            }
+        </Field>
+    }
+    @if (_editing || _model.Published != null)
+    {
+        <Field>
+            <FieldLabel>@L["Published"]</FieldLabel>
+            @if (_editing)
+            {
+                <Check TValue="bool" @bind-Checked="@_unknownPublished">@L["Unknown (publication date)"]</Check>
+            }
+            @if (!_editing || !_unknownPublished)
+            {
+                @L["If the date of exact publication is unknown, set as first day of first month the publication applies to. E.g. July/August 1998 -> 1st July 1998"]
+                <Validation Validator="@ValidatePublished">
+                    <DateEdit TValue="DateTime?" ReadOnly="!_editing" @bind-Date="@_model.Published" >
+                        <Feedback>
+                            <ValidationError>@L["Please enter a valid publication date."]</ValidationError>
+                        </Feedback>
+                    </DateEdit>
+                </Validation>
+            }
+        </Field>
+    }
+    @if (_editing || _model.ProductCode != null)
+    {
+        <Field>
+            <FieldLabel>@L["Product code"]</FieldLabel>
+            @if (_editing)
+            {
+                <Check TValue="bool" @bind-Checked="@_unknownProductCode">@L["Unknown (Product code)"]</Check>
+            }
+            @if (!_editing ||
+                 !_unknownProductCode)
+            {
+                <Validation Validator="@ValidateProductCode">
+                    <TextEdit ReadOnly="!_editing" @bind-Text="@_model.ProductCode">
+                        <Feedback>
+                            <ValidationError>@L["Please enter a valid product code."]</ValidationError>
+                        </Feedback>
+                    </TextEdit>
+                </Validation>
+            }
+        </Field>
+    }
+    @if (_editing || _model.Pages.HasValue)
+    {
+        <Field>
+            <FieldLabel>@L["Pages"]</FieldLabel>
+            @if (_editing)
+            {
+                <Check TValue="bool" @bind-Checked="@_unknownPages">@L["Unknown (pages)"]</Check>
+            }
+            @if (!_editing ||
+                 !_unknownPages)
+            {
+                <Validation Validator="@ValidatePages">
+                    <NumericEdit Disabled="!_editing" TValue="short?" Decimals="0" @bind-Value="@_model.Pages">
+                        <Feedback>
+                            <ValidationError>@L["Please enter a valid number of pages."]</ValidationError>
+                        </Feedback>
+                    </NumericEdit>
+                </Validation>
+            }
+        </Field>
+    }
+    @if (_editing || _model.IssueNumber.HasValue)
+    {
+        <Field>
+            <FieldLabel>@L["Issue number"]</FieldLabel>
+            @if (_editing)
+            {
+                <Check TValue="bool" @bind-Checked="@_unknownIssueNumber">@L["Unknown (issue number)"]</Check>
+            }
+            @if (!_editing ||
+                 !_unknownIssueNumber)
+            {
+                <Validation Validator="@ValidateIssueNumber">
+                    <NumericEdit Disabled="!_editing" TValue="uint?" Decimals="0" @bind-Value="@_model.IssueNumber">
+                        <Feedback>
+                            <ValidationError>@L["Please enter a valid issue number."]</ValidationError>
+                        </Feedback>
+                    </NumericEdit>
+                </Validation>
+            }
+        </Field>
+    }
+</div>
+<div>
+    @if (!_editing)
+    {
+        <Button Color="Color.Primary" Clicked="@OnEditClicked">@L["Edit"]</Button>
+    }
+    else
+    {
+        <Button Color="Color.Success" Clicked="@OnSaveClicked">@L["Save"]</Button>
+        <Button Color="Color.Danger" Clicked="@OnCancelClicked">@L["Cancel"]</Button>
+    }
+    <a href="/admin/magazine_issues" class="btn btn-secondary">@L["Back to list"]</a>
+</div>

Marechai/Pages/Admin/Details/MagazineIssue.razor.cs

@@ -0,0 +1,172 @@
+/******************************************************************************
+// MARECHAI: Master repository of computing history artifacts information
+// ----------------------------------------------------------------------------
+//
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2003-2020 Natalia Portillo
+*******************************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Blazorise;
+using Marechai.Shared;
+using Marechai.ViewModels;
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Components.Authorization;
+
+namespace Marechai.Pages.Admin.Details
+{
+    public partial class MagazineIssue
+    {
+        AuthenticationState     _authState;
+        bool                    _creating;
+        bool                    _editing;
+        bool                    _loaded;
+        List<MagazineViewModel> _magazines;
+        MagazineIssueViewModel  _model;
+        bool                    _unknownIssueNumber;
+        bool                    _unknownNativeCaption;
+        bool                    _unknownPages;
+        bool                    _unknownProductCode;
+        bool                    _unknownPublished;
+
+        [Parameter]
+        public long Id { get; set; }
+
+        protected override async Task OnAfterRenderAsync(bool firstRender)
+        {
+            if(_loaded)
+                return;
+
+            _loaded = true;
+
+            _creating = NavigationManager.ToBaseRelativePath(NavigationManager.Uri).ToLowerInvariant().
+                                          StartsWith("admin/magazine_issues/create", StringComparison.InvariantCulture);
+
+            if(Id <= 0 &&
+               !_creating)
+                return;
+
+            _magazines = await MagazinesService.GetTitlesAsync();
+            _model     = _creating ? new MagazineIssueViewModel() : await Service.GetAsync(Id);
+            _authState = await AuthenticationStateProvider.GetAuthenticationStateAsync();
+
+            _editing = _creating || NavigationManager.ToBaseRelativePath(NavigationManager.Uri).ToLowerInvariant().
+                                                      StartsWith("admin/magazine_issues/edit/",
+                                                                 StringComparison.InvariantCulture);
+
+            if(_editing)
+                SetCheckboxes();
+
+            StateHasChanged();
+        }
+
+        void SetCheckboxes()
+        {
+            _unknownProductCode   = string.IsNullOrWhiteSpace(_model.ProductCode);
+            _unknownIssueNumber   = !_model.IssueNumber.HasValue;
+            _unknownNativeCaption = string.IsNullOrWhiteSpace(_model.NativeCaption);
+            _unknownPublished     = !_model.Published.HasValue;
+            _unknownPages         = !_model.Pages.HasValue;
+        }
+
+        void OnEditClicked()
+        {
+            _editing = true;
+            SetCheckboxes();
+            StateHasChanged();
+        }
+
+        async void OnCancelClicked()
+        {
+            _editing = false;
+
+            if(_creating)
+            {
+                NavigationManager.ToBaseRelativePath("admin/magazine_issues");
+
+                return;
+            }
+
+            _model = await Service.GetAsync(Id);
+            SetCheckboxes();
+            StateHasChanged();
+        }
+
+        async void OnSaveClicked()
+        {
+            if(_unknownNativeCaption)
+                _model.NativeCaption = null;
+            else if(string.IsNullOrWhiteSpace(_model.NativeCaption))
+                return;
+
+            if(_unknownPages)
+                _model.Pages = null;
+            else if(_model.Pages < 1)
+                return;
+
+            if(_unknownIssueNumber)
+                _model.IssueNumber = null;
+            else if(_model.IssueNumber < 1)
+                return;
+
+            if(_unknownPublished)
+                _model.Published = null;
+            else if(_model.Published?.Date >= DateTime.UtcNow.Date)
+                return;
+
+            // TODO: Recognize JAN-13, EAN-13, UPC, etc
+            if(_unknownProductCode)
+                _model.ProductCode = null;
+            else if(string.IsNullOrWhiteSpace(_model.ProductCode))
+                return;
+
+            if(string.IsNullOrWhiteSpace(_model.Caption))
+                return;
+
+            if(_creating)
+                Id = await Service.CreateAsync(_model, (await UserManager.GetUserAsync(_authState.User)).Id);
+            else
+                await Service.UpdateAsync(_model, (await UserManager.GetUserAsync(_authState.User)).Id);
+
+            _editing  = false;
+            _creating = false;
+            _model    = await Service.GetAsync(Id);
+            SetCheckboxes();
+            StateHasChanged();
+        }
+
+        void ValidateCaption(ValidatorEventArgs e) =>
+            Validators.ValidateString(e, L["Caption must be smaller than 256 characters."], 256);
+
+        void ValidatePublished(ValidatorEventArgs e) => Validators.ValidateDate(e);
+
+        void ValidateNativeCaption(ValidatorEventArgs e) =>
+            Validators.ValidateString(e, L["Native caption must be smaller than 256 characters."], 256);
+
+        void ValidatePages(ValidatorEventArgs e) => Validators.ValidateShort(e, 1);
+
+        void ValidateIssueNumber(ValidatorEventArgs e) => Validators.ValidateInteger(e, 1);
+
+        void ValidateProductCode(ValidatorEventArgs e) =>
+            Validators.ValidateString(e, L["Product code must be smaller than 18 characters."], 18);
+    }
+}

Marechai/Pages/Admin/Index.razor

@@ -98,6 +98,9 @@
         <li>
             <a href="/admin/magazines">@L["Magazines"]</a>
         </li>
+        <li>
+            <a href="/admin/magazine_issues">@L["Magazine issues"]</a>
+        </li>
     </ul>
 </div>
 <div class="content">

Marechai/Pages/Admin/MagazineIssues.razor

@@ -0,0 +1,98 @@
+@{
+/******************************************************************************
+// MARECHAI: Master repository of computing history artifacts information
+// ----------------------------------------------------------------------------
+//
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2003-2020 Natalia Portillo
+*******************************************************************************/
+}
+
+@page "/admin/magazine_issues"
+@using Marechai.Database.Models
+@inherits OwningComponentBase<MagazineIssuesService>
+@inject IStringLocalizer<MagazineIssuesService> L
+@inject Microsoft.AspNetCore.Identity.UserManager<ApplicationUser> UserManager
+@inject AuthenticationStateProvider AuthenticationStateProvider
+@attribute [Authorize(Roles = "UberAdmin, Admin")]
+<h3>@L["Magazine issues"]</h3>
+@if (_magazineIssues is null)
+{
+    <p>@L["Loading..."]</p>
+
+    return;
+}
+<p>
+    <a class="btn btn-primary" href="/admin/magazine_issues/create">@L["Create new"]</a>
+</p>
+<table class="table table-striped">
+    <thead>
+    <tr>
+        <th>
+            @L["Magazine title"]
+        </th>
+        <th>
+            @L["Published"]
+        </th>
+        <th>
+            @L["Caption"]
+        </th>
+        <th></th>
+    </tr>
+    </thead>
+    <tbody>
+    @foreach (var item in _magazineIssues)
+    {
+        <tr>
+            <td>
+                @item.MagazineTitle
+            </td>
+            <td>
+                @($"{item.Published:d}")
+            </td>
+            <td>
+                @item.Caption
+            </td>
+            <td>
+                <a class="btn btn-primary" href="/admin/magazine_issues/details/@item.Id">@L["Details"]</a>
+                <a class="btn btn-secondary" href="/admin/magazine_issues/edit/@item.Id">@L["Edit"]</a>
+                <Button Color="Color.Danger" Clicked="() => {ShowModal(item.Id);}">@L["Delete"]</Button>
+            </td>
+        </tr>
+    }
+    </tbody>
+</table>
+
+<Modal @ref="_frmDelete" IsCentered="true" Closing="@ModalClosing"> 
+    <ModalBackdrop/>
+    <ModalContent Centered="true">
+        <ModalHeader>
+            <ModalTitle>@L["Delete magazine issue"]</ModalTitle>
+            <CloseButton Clicked="@HideModal"/>
+        </ModalHeader>
+        <ModalBody>
+            <Text>@string.Format(@L["Are you sure you want to delete the magazine issue published on {0} for magazine {1} with caption {2}?"], _currentMagazineIssue?.Published,_currentMagazineIssue?.MagazineTitle,_currentMagazineIssue?.Caption)</Text>
+        </ModalBody>
+        <ModalFooter>
+            <Button Color="Color.Primary" Clicked="@HideModal" Disabled="@_deleteInProgress">@L["Cancel"]</Button>
+            <Button Color="Color.Danger" Clicked="@ConfirmDelete" Disabled="@_deleteInProgress">@L["Delete"]</Button>
+        </ModalFooter>
+    </ModalContent>
+</Modal>

Marechai/Pages/Admin/MagazineIssues.razor.cs

@@ -0,0 +1,88 @@
+/******************************************************************************
+// MARECHAI: Master repository of computing history artifacts information
+// ----------------------------------------------------------------------------
+//
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2003-2020 Natalia Portillo
+*******************************************************************************/
+
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Blazorise;
+using Marechai.ViewModels;
+using Microsoft.AspNetCore.Components.Authorization;
+
+namespace Marechai.Pages.Admin
+{
+    public partial class MagazineIssues
+    {
+        MagazineIssueViewModel       _currentMagazineIssue;
+        bool                         _deleteInProgress;
+        Modal                        _frmDelete;
+        bool                         _loaded;
+        List<MagazineIssueViewModel> _magazineIssues;
+
+        protected override async Task OnAfterRenderAsync(bool firstRender)
+        {
+            if(_loaded)
+                return;
+
+            _magazineIssues = await Service.GetAsync();
+            _loaded         = true;
+            StateHasChanged();
+        }
+
+        void ShowModal(long itemId)
+        {
+            _currentMagazineIssue = _magazineIssues.FirstOrDefault(n => n.Id == itemId);
+            _frmDelete.Show();
+        }
+
+        void HideModal() => _frmDelete.Hide();
+
+        async void ConfirmDelete()
+        {
+            if(_currentMagazineIssue is null)
+                return;
+
+            _deleteInProgress = true;
+            _magazineIssues   = null;
+            AuthenticationState authState = await AuthenticationStateProvider.GetAuthenticationStateAsync();
+
+            // Yield thread to let UI to update
+            await Task.Yield();
+
+            await Service.DeleteAsync(_currentMagazineIssue.Id, (await UserManager.GetUserAsync(authState.User)).Id);
+            _magazineIssues = await Service.GetAsync();
+
+            _deleteInProgress = false;
+            _frmDelete.Hide();
+
+            // Yield thread to let UI to update
+            await Task.Yield();
+
+            // Tell we finished loading
+            StateHasChanged();
+        }
+
+        void ModalClosing(ModalClosingEventArgs obj) => _currentMagazineIssue = null;
+    }
+}

Marechai/Resources/Services/AdminService.en.resx

@@ -35,4 +35,7 @@
   <data name="Documents" xml:space="preserve">
     <value>Documents</value>
   </data>
+  <data name="Magazine issues" xml:space="preserve">
+    <value>Magazine issues</value>
+  </data>
 </root>

Marechai/Resources/Services/AdminService.es.resx

@@ -234,4 +234,7 @@
   <data name="Documents" xml:space="preserve">
     <value>Documentos</value>
   </data>
+  <data name="Magazine issues" xml:space="preserve">
+    <value>Números de revistas</value>
+  </data>
 </root>

Marechai/Resources/Services/MagazineIssues.en.resx

@@ -0,0 +1,122 @@
+<root>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>1.3</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="Magazine issues" xml:space="preserve">
+    <value>Magazine issues</value>
+  </data>
+  <data name="Loading..." xml:space="preserve">
+    <value>Loading...</value>
+  </data>
+  <data name="Create new" xml:space="preserve">
+    <value>Create new</value>
+  </data>
+  <data name="Magazine title" xml:space="preserve">
+    <value>Magazine title</value>
+  </data>
+  <data name="Published" xml:space="preserve">
+    <value>Published</value>
+  </data>
+  <data name="Caption" xml:space="preserve">
+    <value>Caption</value>
+  </data>
+  <data name="Details" xml:space="preserve">
+    <value>Details</value>
+  </data>
+  <data name="Edit" xml:space="preserve">
+    <value>Edit</value>
+  </data>
+  <data name="Delete" xml:space="preserve">
+    <value>Delete</value>
+  </data>
+  <data name="Delete magazine issue" xml:space="preserve">
+    <value>Delete magazine issue</value>
+  </data>
+  <data name="Are you sure you want to delete the magazine issue published on {0} for magazine {1} with caption {2}?" xml:space="preserve">
+    <value>Are you sure you want to delete the magazine issue published on {0} for magazine {1} with caption {2}?</value>
+  </data>
+  <data name="Cancel" xml:space="preserve">
+    <value>Cancel</value>
+  </data>
+  <data name="Magazine issue details" xml:space="preserve">
+    <value>Magazine issue details</value>
+  </data>
+  <data name="Magazine" xml:space="preserve">
+    <value>Magazine</value>
+  </data>
+  <data name="Caption using latin script" xml:space="preserve">
+    <value>Caption using latin script</value>
+  </data>
+  <data name="Please enter a valid caption." xml:space="preserve">
+    <value>Please enter a valid caption.</value>
+  </data>
+  <data name="Native caption, that is, caption using native script (cyrillic, chinese, etc)" xml:space="preserve">
+    <value>Native caption, that is, caption using native script (cyrillic, chinese, etc)</value>
+  </data>
+  <data name="Unknown (native caption)" xml:space="preserve">
+    <value>Unknown</value>
+  </data>
+  <data name="Please enter a valid native caption." xml:space="preserve">
+    <value>Please enter a valid native caption.</value>
+  </data>
+  <data name="Unknown (publication date)" xml:space="preserve">
+    <value>Unknown</value>
+  </data>
+  <data name="If the date of exact publication is unknown, set as first day of first month the publication applies to. E.g. July/August 1998 -&gt; 1st July 1998" xml:space="preserve">
+    <value>If the date of exact publication is unknown, set as first day of first month the publication applies to. E.g. July/August 1998 -&gt; 1st July 1998</value>
+  </data>
+  <data name="Please enter a valid publication date." xml:space="preserve">
+    <value>Please enter a valid publication date.</value>
+  </data>
+  <data name="Product code" xml:space="preserve">
+    <value>Product code</value>
+  </data>
+  <data name="Unknown (Product code)" xml:space="preserve">
+    <value>Unknown</value>
+  </data>
+  <data name="Please enter a valid product code." xml:space="preserve">
+    <value>Please enter a valid product code.</value>
+  </data>
+  <data name="Pages" xml:space="preserve">
+    <value>Pages</value>
+  </data>
+  <data name="Unknown (pages)" xml:space="preserve">
+    <value>Unknown</value>
+  </data>
+  <data name="Please enter a valid number of pages." xml:space="preserve">
+    <value>Please enter a valid number of pages.</value>
+  </data>
+  <data name="Issue number" xml:space="preserve">
+    <value>Issue number</value>
+  </data>
+  <data name="Unknown (issue number)" xml:space="preserve">
+    <value>Unknown</value>
+  </data>
+  <data name="Please enter a valid issue number." xml:space="preserve">
+    <value>Please enter a valid issue number.</value>
+  </data>
+  <data name="Save" xml:space="preserve">
+    <value>Save</value>
+  </data>
+  <data name="Back to list" xml:space="preserve">
+    <value>Back to list</value>
+  </data>
+  <data name="Caption must be smaller than 256 characters." xml:space="preserve">
+    <value>Caption must be smaller than 256 characters.</value>
+  </data>
+  <data name="Product code must be smaller than 18 characters." xml:space="preserve">
+    <value>Product code must be smaller than 18 characters.</value>
+  </data>
+  <data name="Native caption must be smaller than 256 characters." xml:space="preserve">
+    <value>Native caption must be smaller than 256 characters.</value>
+  </data>
+</root>

Marechai/Resources/Services/MagazineIssues.es.resx

@@ -0,0 +1,229 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- ReSharper disable MarkupTextTypo -->
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="Magazine issues" xml:space="preserve">
+    <value>Números de revista</value>
+  </data>
+  <data name="Loading..." xml:space="preserve">
+    <value>Cargando...</value>
+  </data>
+  <data name="Create new" xml:space="preserve">
+    <value>Crear nuevo</value>
+  </data>
+  <data name="Magazine title" xml:space="preserve">
+    <value>Título de la revista</value>
+  </data>
+  <data name="Published" xml:space="preserve">
+    <value>Publicación</value>
+  </data>
+  <data name="Caption" xml:space="preserve">
+    <value>Portada</value>
+  </data>
+  <data name="Details" xml:space="preserve">
+    <value>Detalles</value>
+  </data>
+  <data name="Edit" xml:space="preserve">
+    <value>Editar</value>
+  </data>
+  <data name="Delete" xml:space="preserve">
+    <value>Eliminar</value>
+  </data>
+  <data name="Delete magazine issue" xml:space="preserve">
+    <value>Eliminar número de revista</value>
+  </data>
+  <data name="Are you sure you want to delete the magazine issue published on {0} for magazine {1} with caption {2}?" xml:space="preserve">
+    <value>¿Estás seguro de eliminar el número de la revista {1} publicado el {0} con la portada {2}?</value>
+  </data>
+  <data name="Cancel" xml:space="preserve">
+    <value>Cancelar</value>
+  </data>
+  <data name="Magazine issue details" xml:space="preserve">
+    <value>Detalles de número de revista</value>
+  </data>
+  <data name="Magazine" xml:space="preserve">
+    <value>Revista</value>
+  </data>
+  <data name="Caption using latin script" xml:space="preserve">
+    <value>Portada usando escritura latina</value>
+  </data>
+  <data name="Please enter a valid caption." xml:space="preserve">
+    <value>Por favor introduce un texto de portada válido.</value>
+  </data>
+  <data name="Native caption, that is, caption using native script (cyrillic, chinese, etc)" xml:space="preserve">
+    <value>Portada nativa, es decir, el text de portada usando escritura nativa (cirílico, chino, etc)</value>
+  </data>
+  <data name="Unknown (native caption)" xml:space="preserve">
+    <value>Desconocido</value>
+  </data>
+  <data name="Please enter a valid native caption." xml:space="preserve">
+    <value>Por favor introduce un texto de portada nativo válido.</value>
+  </data>
+  <data name="Unknown (publication date)" xml:space="preserve">
+    <value>Desconocida</value>
+  </data>
+  <data name="If the date of exact publication is unknown, set as first day of first month the publication applies to. E.g. July/August 1998 -&gt; 1st July 1998" xml:space="preserve">
+    <value>Si la fecha exacta de la publicación es desconocida, poner como el primer día del mes al que se aplica la publicación. Ej.: Julio/Agosto 1998 -&gt; 1 de Agosto de 1998</value>
+  </data>
+  <data name="Please enter a valid publication date." xml:space="preserve">
+    <value>Por favor introduce una fecha de publicación válida.</value>
+  </data>
+  <data name="Product code" xml:space="preserve">
+    <value>Código de producto</value>
+  </data>
+  <data name="Unknown (Product code)" xml:space="preserve">
+    <value>Desconocido</value>
+  </data>
+  <data name="Please enter a valid product code." xml:space="preserve">
+    <value>Por favor introduce un código de producto válido.</value>
+  </data>
+  <data name="Pages" xml:space="preserve">
+    <value>Páginas</value>
+  </data>
+  <data name="Unknown (pages)" xml:space="preserve">
+    <value>Desconocido</value>
+  </data>
+  <data name="Please enter a valid number of pages." xml:space="preserve">
+    <value>Por favor introduce un número de páginas válido.</value>
+  </data>
+  <data name="Issue number" xml:space="preserve">
+    <value>Número de publicación</value>
+  </data>
+  <data name="Unknown (issue number)" xml:space="preserve">
+    <value>Desconocido</value>
+  </data>
+  <data name="Please enter a valid issue number." xml:space="preserve">
+    <value>Por favor introduce un número de publicación válido.</value>
+  </data>
+  <data name="Save" xml:space="preserve">
+    <value>Guardar</value>
+  </data>
+  <data name="Back to list" xml:space="preserve">
+    <value>Volver a la lista</value>
+  </data>
+  <data name="Caption must be smaller than 256 characters." xml:space="preserve">
+    <value>El texto de la portada debe contener menos de 256 caracteres.</value>
+  </data>
+  <data name="Native caption must be smaller than 256 characters." xml:space="preserve">
+    <value>La portada nativa debe contener menos de 256 caracteres.</value>
+  </data>
+  <data name="Product code must be smaller than 18 characters." xml:space="preserve">
+    <value>El código de producto debe contener menos de 18 caracteres.</value>
+  </data>
+</root>

Marechai/Services/MagazineIssuesService.cs

@@ -0,0 +1,121 @@
+/******************************************************************************
+// MARECHAI: Master repository of computing history artifacts information
+// ----------------------------------------------------------------------------
+//
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2003-2020 Natalia Portillo
+*******************************************************************************/
+
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Marechai.Database.Models;
+using Marechai.ViewModels;
+using Microsoft.EntityFrameworkCore;
+
+namespace Marechai.Services
+{
+    public class MagazineIssuesService
+    {
+        readonly MarechaiContext _context;
+
+        public MagazineIssuesService(MarechaiContext context) => _context = context;
+
+        public async Task<List<MagazineIssueViewModel>> GetAsync() => await _context.
+                                                                            MagazineIssues.
+                                                                            OrderBy(b => b.Magazine.Title).
+                                                                            ThenBy(b => b.Published).
+                                                                            ThenBy(b => b.Caption).
+                                                                            Select(b => new MagazineIssueViewModel
+                                                                            {
+                                                                                Id            = b.Id,
+                                                                                MagazineId    = b.MagazineId,
+                                                                                MagazineTitle = b.Magazine.Title,
+                                                                                Caption       = b.Caption,
+                                                                                NativeCaption = b.NativeCaption,
+                                                                                Published     = b.Published,
+                                                                                ProductCode   = b.ProductCode,
+                                                                                Pages         = b.Pages,
+                                                                                IssueNumber   = b.IssueNumber
+                                                                            }).ToListAsync();
+
+        public async Task<MagazineIssueViewModel> GetAsync(long id) =>
+            await _context.MagazineIssues.Where(b => b.Id == id).Select(b => new MagazineIssueViewModel
+            {
+                Id            = b.Id,
+                MagazineId    = b.MagazineId,
+                MagazineTitle = b.Magazine.Title,
+                Caption       = b.Caption,
+                NativeCaption = b.NativeCaption,
+                Published     = b.Published,
+                ProductCode   = b.ProductCode,
+                Pages         = b.Pages,
+                IssueNumber   = b.IssueNumber
+            }).FirstOrDefaultAsync();
+
+        public async Task UpdateAsync(MagazineIssueViewModel viewModel, string userId)
+        {
+            MagazineIssue model = await _context.MagazineIssues.FindAsync(viewModel.Id);
+
+            if(model is null)
+                return;
+
+            model.MagazineId    = viewModel.MagazineId;
+            model.Caption       = viewModel.Caption;
+            model.NativeCaption = viewModel.NativeCaption;
+            model.Published     = viewModel.Published;
+            model.ProductCode   = viewModel.ProductCode;
+            model.Pages         = viewModel.Pages;
+            model.IssueNumber   = viewModel.IssueNumber;
+            await _context.SaveChangesWithUserAsync(userId);
+        }
+
+        public async Task<long> CreateAsync(MagazineIssueViewModel viewModel, string userId)
+        {
+            var model = new MagazineIssue
+            {
+                MagazineId    = viewModel.MagazineId,
+                Caption       = viewModel.Caption,
+                NativeCaption = viewModel.NativeCaption,
+                Published     = viewModel.Published,
+                ProductCode   = viewModel.ProductCode,
+                Pages         = viewModel.Pages,
+                IssueNumber   = viewModel.IssueNumber
+            };
+
+            await _context.MagazineIssues.AddAsync(model);
+            await _context.SaveChangesWithUserAsync(userId);
+
+            return model.Id;
+        }
+
+        public async Task DeleteAsync(long id, string userId)
+        {
+            MagazineIssue item = await _context.MagazineIssues.FindAsync(id);
+
+            if(item is null)
+                return;
+
+            _context.MagazineIssues.Remove(item);
+
+            await _context.SaveChangesWithUserAsync(userId);
+        }
+    }
+}

Marechai/Services/MagazinesService.cs

@@ -54,6 +54,15 @@ namespace Marechai.Services
                                                                            Country          = b.Country.Name
                                                                        }).ToListAsync();
 
+        public async Task<List<MagazineViewModel>> GetTitlesAsync() => await _context.
+                                                                             Magazines.OrderBy(b => b.Title).
+                                                                             ThenBy(b => b.FirstPublication).
+                                                                             Select(b => new MagazineViewModel
+                                                                             {
+                                                                                 Id    = b.Id,
+                                                                                 Title = $"{b.Title} ({b.Country.Name}"
+                                                                             }).ToListAsync();
+
         public async Task<MagazineViewModel> GetAsync(long id) => await _context.Magazines.Where(b => b.Id == id).
                                                                       Select(b => new MagazineViewModel
                                                                       {

Marechai/Services/Register.cs

@@ -75,6 +75,7 @@ namespace Marechai.Services
             services.AddScoped<DumpsService>();
             services.AddScoped<MediaService>();
             services.AddScoped<MagazinesService>();
+            services.AddScoped<MagazineIssuesService>();
         }
     }
 }

Marechai/ViewModels/MagazineIssueViewModel.cs

@@ -0,0 +1,41 @@
+/******************************************************************************
+// MARECHAI: Master repository of computing history artifacts information
+// ----------------------------------------------------------------------------
+//
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2003-2020 Natalia Portillo
+*******************************************************************************/
+
+using System;
+
+namespace Marechai.ViewModels
+{
+    public class MagazineIssueViewModel : BaseViewModel<long>
+    {
+        public long      MagazineId    { get; set; }
+        public string    MagazineTitle { get; set; }
+        public string    Caption       { get; set; }
+        public string    NativeCaption { get; set; }
+        public DateTime? Published     { get; set; }
+        public string    ProductCode   { get; set; }
+        public short?    Pages         { get; set; }
+        public uint?     IssueNumber   { get; set; }
+    }
+}