Adds form and models for reading goal

bookwyrm/forms.py

@@ -188,3 +188,8 @@ class ShelfForm(CustomForm):
     class Meta:
         model = models.Shelf
         fields = ['user', 'name', 'privacy']
+
+class GoalForm(CustomForm):
+    class Meta:
+        model = models.AnnualGoal
+        fields = ['user', 'year', 'goal']

bookwyrm/migrations/0036_annualgoal.py

@@ -0,0 +1,31 @@
+# Generated by Django 3.0.7 on 2021-01-15 23:01
+
+import bookwyrm.models.fields
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bookwyrm', '0035_edition_edition_rank'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='AnnualGoal',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_date', models.DateTimeField(auto_now_add=True)),
+                ('updated_date', models.DateTimeField(auto_now=True)),
+                ('remote_id', bookwyrm.models.fields.RemoteIdField(max_length=255, null=True, validators=[bookwyrm.models.fields.validate_remote_id])),
+                ('goal', bookwyrm.models.fields.IntegerField()),
+                ('year', models.IntegerField(default=2021)),
+                ('user', bookwyrm.models.fields.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'unique_together': {('user', 'year')},
+            },
+        ),
+    ]

bookwyrm/models/__init__.py

@@ -17,7 +17,7 @@ from .readthrough import ReadThrough
 
 from .tag import Tag, UserTag
 
-from .user import User, KeyPair
+from .user import User, KeyPair, AnnualGoal
 from .relationship import UserFollows, UserFollowRequest, UserBlocks
 from .federated_server import FederatedServer
 

bookwyrm/models/user.py

@@ -6,6 +6,7 @@ from django.apps import apps
 from django.contrib.auth.models import AbstractUser
 from django.db import models
 from django.dispatch import receiver
+from django.utils import timezone
 
 from bookwyrm import activitypub
 from bookwyrm.connectors import get_data
@@ -221,6 +222,35 @@ class KeyPair(ActivitypubMixin, BookWyrmModel):
         return activity_object
 
 
+class AnnualGoal(BookWyrmModel):
+    ''' set a goal for how many books you read in a year '''
+    user = fields.ForeignKey('User', on_delete=models.PROTECT)
+    goal = fields.IntegerField()
+    year = models.IntegerField(default=timezone.now().year)
+
+    class Meta:
+        ''' unqiueness constraint '''
+        unique_together = ('user', 'year')
+
+    def get_remote_id(self):
+        ''' put the year in the path '''
+        return '%s/goal/%d' % (self.user.remote_id, self.year)
+
+    @property
+    def books(self):
+        ''' the books you've read this year '''
+        return self.user.readthrough_set.filter(
+            finish_date__year__gte=self.year
+        ).order_by('finish_date').all()
+
+    @property
+    def book_count(self):
+        ''' how many books you've read this year '''
+        return self.user.readthrough_set.filter(
+            finish_date__year__gte=self.year).count()
+
+
+
 @receiver(models.signals.post_save, sender=User)
 #pylint: disable=unused-argument
 def execute_after_save(sender, instance, created, *args, **kwargs):