[Provider] Server entities and models (#1370)

* Mock out provider models and service

* Implement CreateAsync, CompleteSetupAsync, UpdateAsync, InviteUserAsync and ResendInvitesAsync

* Implement AcceptUserAsync and ConfirmUsersAsync

* Implement SaveUserAsync and DeleteUserAsync

* Add email templates

* Add admin operations for providers

* Fix mail template names

* Rename roles

* Verify provider has provideradmin

* Add self hosted check to admin controller

* Resolve review comments

* Update sql queries

* Change create provider to use email instead of userId

src/Admin/Views/Providers/Create.cshtml

@@ -0,0 +1,17 @@
+@model CreateProviderModel
+@{
+    ViewData["Title"] = "Create Provider";
+}
+
+<h1>Create Provider</h1>
+
+<form method="post">
+    <div asp-validation-summary="All" class="alert alert-danger"></div>
+    
+    <div class="form-group">
+        <label asp-for="OwnerEmail"></label>
+        <input type="text" class="form-control" asp-for="OwnerEmail">
+    </div>
+    
+    <button type="submit" class="btn btn-primary mb-2">Create Provider</button>
+</form>

src/Admin/Views/Providers/Edit.cshtml

@@ -0,0 +1,51 @@
+@model ProviderEditModel
+@{
+    ViewData["Title"] = "Provider: " + Model.Provider.Name;
+}
+
+<h1>Provider <small>@Model.Provider.Name</small></h1>
+
+<h2>Provider Information</h2>
+@await Html.PartialAsync("_ViewInformation", Model)
+<form method="post" id="edit-form">
+    <h2>General</h2>
+    <div class="row">
+        <div class="col-sm">
+            <div class="form-group">
+                <label asp-for="Name"></label>
+                <input type="text" class="form-control" asp-for="Name" required>
+            </div>
+        </div>
+    </div>
+    <div class="form-check mb-3">
+        <input type="checkbox" class="form-check-input" asp-for="Enabled">
+        <label class="form-check-label" asp-for="Enabled"></label>
+    </div>
+    <h2>Business Information</h2>
+    <div class="row">
+        <div class="col-sm">
+            <div class="form-group">
+                <label asp-for="BusinessName"></label>
+                <input type="text" class="form-control" asp-for="BusinessName">
+            </div>
+        </div>
+    </div>
+    <h2>Billing</h2>
+    <div class="row">
+        <div class="col-sm">
+            <div class="form-group">
+                <label asp-for="BillingEmail"></label>
+                <input type="email" class="form-control" asp-for="BillingEmail">
+            </div>
+        </div>
+    </div>
+</form>
+<div class="d-flex mt-4">
+    <button type="submit" class="btn btn-primary" form="edit-form">Save</button>
+    <div class="ml-auto d-flex">
+        <form asp-action="Delete" asp-route-id="@Model.Provider.Id"
+              onsubmit="return confirm('Are you sure you want to delete this provider (@Model.Provider.Name)?')">
+            <button class="btn btn-danger" type="submit">Delete</button>
+        </form>
+    </div>
+</div>

src/Admin/Views/Providers/Index.cshtml

@@ -0,0 +1,91 @@
+@model ProvidersModel
+@{
+    ViewData["Title"] = "Providers";
+}
+
+<h1>Providers</h1>
+
+<div class="row mb-2">
+    <div class="col">
+        <form class="form-inline mb-2" method="get">
+            <label class="sr-only" asp-for="Name">Name</label>
+            <input type="text" class="form-control mb-2 mr-2" placeholder="Name" asp-for="Name" name="name">
+            <label class="sr-only" asp-for="UserEmail">User email</label>
+            <input type="text" class="form-control mb-2 mr-2" placeholder="User email" asp-for="UserEmail" name="userEmail">
+            <button type="submit" class="btn btn-primary mb-2" title="Search"><i class="fa fa-search"></i> Search</button>
+        </form>
+    </div>
+    <div class="col-auto">
+        <a asp-action="Create" class="btn btn-secondary">Create Provider</a>
+    </div>
+</div>
+
+<div class="table-responsive">
+    <table class="table table-striped table-hover">
+        <thead>
+            <tr>
+                <th>Name</th>
+                <th style="width: 190px;">Status</th>
+                <th style="width: 150px;">Created</th>
+            </tr>
+        </thead>
+        <tbody>
+            @if(!Model.Items.Any())
+            {
+                <tr>
+                    <td colspan="5">No results to list.</td>
+                </tr>
+            }
+            else
+            {
+                @foreach(var provider in Model.Items)
+                {
+                    <tr>
+                        <td>
+                            <a asp-action="@Model.Action" asp-route-id="@provider.Id">@(provider.Name ?? "Pending")</a>
+                        </td>
+                        <td>@provider.Status</td>
+                        <td>
+                            <span title="@provider.CreationDate.ToString()">
+                                @provider.CreationDate.ToShortDateString()
+                            </span>
+                        </td>
+                    </tr>
+                }
+            }
+        </tbody>
+    </table>
+</div>
+
+<nav>
+    <ul class="pagination">
+        @if(Model.PreviousPage.HasValue)
+        {
+            <li class="page-item">
+                <a class="page-link" asp-action="Index" asp-route-page="@Model.PreviousPage.Value"
+                   asp-route-count="@Model.Count" asp-route-userEmail="@Model.UserEmail"
+                   asp-route-name="@Model.Name" asp-route-paid="@Model.Paid">Previous</a>
+            </li>
+        }
+        else
+        {
+            <li class="page-item disabled">
+                <a class="page-link" href="#" tabindex="-1">Previous</a>
+            </li>
+        }
+        @if(Model.NextPage.HasValue)
+        {
+            <li class="page-item">
+                <a class="page-link" asp-action="Index" asp-route-page="@Model.NextPage.Value"
+                   asp-route-count="@Model.Count" asp-route-userEmail="@Model.UserEmail"
+                   asp-route-name="@Model.Name" asp-route-paid="@Model.Paid">Next</a>
+            </li>
+        }
+        else
+        {
+            <li class="page-item disabled">
+                <a class="page-link" href="#" tabindex="-1">Next</a>
+            </li>
+        }
+    </ul>
+</nav>

src/Admin/Views/Providers/View.cshtml

@@ -0,0 +1,13 @@
+@model ProviderViewModel
+@{
+    ViewData["Title"] = "Provider: " + Model.Provider.Name;
+}
+
+<h1>Provider <small>@Model.Provider.Name</small></h1>
+
+<h2>Information</h2>
+@await Html.PartialAsync("_ViewInformation", Model)
+<form asp-action="Delete" asp-route-id="@Model.Provider.Id"
+      onsubmit="return confirm('Are you sure you want to delete this provider (@Model.Provider.Name)?')">
+    <button class="btn btn-danger" type="submit">Delete</button>
+</form>

src/Admin/Views/Providers/_ViewInformation.cshtml

@@ -0,0 +1,20 @@
+@model ProviderViewModel
+<dl class="row">
+    <dt class="col-sm-4 col-lg-3">Id</dt>
+    <dd class="col-sm-8 col-lg-9"><code>@Model.Provider.Id</code></dd>
+
+    <dt class="col-sm-4 col-lg-3">Status</dt>
+    <dd class="col-sm-8 col-lg-9">@Model.Provider.Status</dd>
+    
+    <dt class="col-sm-4 col-lg-3">Users</dt>
+    <dd class="col-sm-8 col-lg-9">@Model.UserCount</dd>
+    
+    <dt class="col-sm-4 col-lg-3">ProviderAdmins</dt>
+    <dd class="col-sm-8 col-lg-9">@(string.IsNullOrWhiteSpace(Model.ProviderAdmins) ? "None" : Model.ProviderAdmins)</dd>
+
+    <dt class="col-sm-4 col-lg-3">Created</dt>
+    <dd class="col-sm-8 col-lg-9">@Model.Provider.CreationDate.ToString()</dd>
+
+    <dt class="col-sm-4 col-lg-3">Modified</dt>
+    <dd class="col-sm-8 col-lg-9">@Model.Provider.RevisionDate.ToString()</dd>
+</dl>