From 37a698c77b0fe8426641864e837a300d37704176 Mon Sep 17 00:00:00 2001
From: Scot Hacker <shacker@birdhouse.org>
Date: Sun, 10 Mar 2019 14:23:17 -0700
Subject: [PATCH] Working browser-upload view

---
 todo/operations/csv_importer.py     |  1 +
 todo/templates/todo/import_csv.html | 80 +++++++++++++++++++++++++++++
 todo/urls.py                        |  5 ++
 todo/views/__init__.py              |  1 +
 todo/views/import_csv.py            | 22 ++++++++
 5 files changed, 109 insertions(+)
 create mode 100644 todo/templates/todo/import_csv.html
 create mode 100644 todo/views/import_csv.py

diff --git a/todo/operations/csv_importer.py b/todo/operations/csv_importer.py
index a7e78a9..62e777e 100644
--- a/todo/operations/csv_importer.py
+++ b/todo/operations/csv_importer.py
@@ -68,6 +68,7 @@ class CSVImporter:
 
         self.summary_msgs.append(f"\nProcessed {self.line_count} CSV rows")
         self.summary_msgs.append(f"Upserted {self.upsert_count} rows")
+        self.summary_msgs.append(f"Skipped {self.line_count - self.upsert_count} rows")
 
         _res = {
             "errors": self.error_msgs,
diff --git a/todo/templates/todo/import_csv.html b/todo/templates/todo/import_csv.html
new file mode 100644
index 0000000..ec91b45
--- /dev/null
+++ b/todo/templates/todo/import_csv.html
@@ -0,0 +1,80 @@
+{% extends "todo/base.html" %}
+{% load static %}
+
+{% block title %}Import CSV{% endblock %}
+
+{% block content %}
+  <h2>
+    Import CSV
+  </h2>
+
+  <p>
+    Batch-import tasks by uploading a specifically-formatted CSV.
+    See documentation for formatting rules.
+    Successs and failures will be reported here.
+  </p>
+
+  {% if results %}
+    <div class="card mb-4">
+      <div class="card-header">
+        Results of CSV upload
+      </div>
+      <div class="card-body">
+
+        <p>
+          <b>Summary:</b>
+        </p>
+        <ul>
+          {% for line in results.summaries %}
+            <li>{{ line }}</li>
+          {% endfor %}
+        </ul>
+
+        <p>
+          <b>Upserts (tasks created or updated):</b>
+        </p>
+        <ul>
+          {% for line in results.upserts %}
+            <li>{{ line }}</li>
+          {% endfor %}
+        </ul>
+
+        <p>
+          <b>Errors (tasks NOT created or updated):</b>
+        </p>
+        <ul>
+          {% for error_row in results.errors %}
+            {% for k, error_list in error_row.items  %}
+              <li>CSV row {{ k }}</li>
+              <ul>
+                {% for err in error_list %}
+                  <li>{{ err }}</li>
+                {% endfor %}
+              </ul>
+            {% endfor %}
+
+          {% endfor %}
+        </ul>
+
+
+      </div>
+    </div>
+  {% endif %}
+
+
+  <div class="card">
+    <div class="card-header">
+      Upload Tasks
+    </div>
+    <div class="card-body">
+      <form method="post" enctype="multipart/form-data">
+        {% csrf_token %}
+        <div>
+          <input type="file" name="csvfile" accept="text/csv">
+        </div>
+        <button type="submit" class="btn btn-primary mt-4">Upload</button>
+      </form>
+    </div>
+  </div>
+
+{% endblock %}
diff --git a/todo/urls.py b/todo/urls.py
index 2c97a8d..7e5d2a6 100644
--- a/todo/urls.py
+++ b/todo/urls.py
@@ -70,4 +70,9 @@ urlpatterns = [
         'search/',
         views.search,
         name="search"),
+
+    path(
+        'import_csv/',
+        views.import_csv,
+        name="import_csv"),
 ]
diff --git a/todo/views/__init__.py b/todo/views/__init__.py
index c36bb65..4c5777d 100644
--- a/todo/views/__init__.py
+++ b/todo/views/__init__.py
@@ -8,3 +8,4 @@ from todo.views.reorder_tasks import reorder_tasks  # noqa: F401
 from todo.views.search import search  # noqa: F401
 from todo.views.task_detail import task_detail  # noqa: F401
 from todo.views.toggle_done import toggle_done  # noqa: F401
+from todo.views.import_csv import import_csv  # noqa: F401
diff --git a/todo/views/import_csv.py b/todo/views/import_csv.py
new file mode 100644
index 0000000..50db211
--- /dev/null
+++ b/todo/views/import_csv.py
@@ -0,0 +1,22 @@
+from django.contrib.auth.decorators import login_required, user_passes_test
+from django.http import HttpResponse
+from django.shortcuts import render
+from todo.operations.csv_importer import CSVImporter
+
+from todo.utils import staff_check
+
+@login_required
+@user_passes_test(staff_check)
+def import_csv(request) -> HttpResponse:
+    """Import a specifically formatted CSV into stored tasks.
+    """
+
+    ctx = {}
+
+    if request.method == "POST":
+        filepath = request.FILES.get('csvfile')
+        importer = CSVImporter()
+        results = importer.upsert(filepath)
+        ctx["results"] = results
+
+    return render(request, "todo/import_csv.html", context=ctx)