feat(pets): implements adoption

app/models/adoption_status.py

@@ -2,4 +2,4 @@ from app.extensions import db
 
 class AdoptionStatus(db.Model):
   id = db.Column(db.Integer, primary_key=True)
-  status = db.Column(db.String(255), nullable=False)
+  name = db.Column(db.String(255), nullable=False)

app/models/adoptions.py

@@ -1,13 +1,10 @@
 from app.extensions import db
-import datetime
 from sqlalchemy.orm import relationship, mapped_column
 
 class Adoptions(db.Model) :
   id = mapped_column(db.Integer, primary_key=True)
-  publisher_id = mapped_column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+  adopter_id = mapped_column(db.Integer, db.ForeignKey('user.id'), nullable=False)
   pet_id = mapped_column(db.Integer, db.ForeignKey('pet.id'), nullable=False)
-  publish_date = mapped_column(db.DateTime, default=datetime.datetime.utcnow, nullable=False)
   status_id = mapped_column(db.Integer, db.ForeignKey('adoption_status.id'), nullable=False)
-  publisher = relationship("User")
+  adopter = relationship("User")
-  pet = relationship("Pet")
+  status = relationship("AdoptionStatus", uselist=False)
-  status = relationship("AdoptionStatus")

app/models/pet.py

@@ -14,5 +14,6 @@ class Pet(db.Model):
   height = mapped_column(db.Float, default=0, nullable=False)
   registrar_id = mapped_column(db.Integer, db.ForeignKey('user.id'), nullable=False)
   registration_date = mapped_column(db.DateTime, default=datetime.datetime.utcnow, nullable=False)
+  adoption = relationship("Adoptions",uselist=False)
   kind = relationship("PetKind")
-  registrar = relationship("User")
+  registrar = relationship("User",uselist=False)

app/pets/routes.py

@@ -23,3 +23,10 @@ def register():
         flash(FlashMessage("Pet added!", AlertType.SUCCESS.value ))
     types = PetService.get_pets_kind()
     return render_template("pets/register.html", types=types)
+
+@bp.route('adopt')
+@login_required
+def adopt():
+    if not PetService.adopt_pet(request):
+        return redirect("/users/login")
+    return redirect("/pets/")

app/services/pet_service.py

@@ -2,9 +2,13 @@ import cloudinary
 import cloudinary.uploader
 import os
 from flask import flash, Request, session
+from sqlalchemy import Row, ScalarResult
 from app.extensions import db
+from app.models.adoptions import Adoptions
+from app.models.adoption_status import AdoptionStatus
 from app.models.pet import Pet
 from app.models.pet_kind import PetKind
+from app.utils.adoption_status import AdoptionStatusEnum
 from app.utils.alert_type import AlertType
 from app.utils.errors.pets.pet_register_errors import PetRegisterError
 from app.utils.flash_message import FlashMessage
@@ -12,6 +16,35 @@ from app.utils.helpers import pet_sex_id_to_str
 from app.utils.validators.pet_validators import PetValidators
 class PetService:
     
+    @staticmethod
+    def adopt_pet(request: Request):
+        pet_id = request.args.get('id')
+        user_id = session.get('id')
+        if user_id is None:
+            session.clear()
+            return False
+        pet = PetValidators.is_valid_pet_id(pet_id)
+        if pet is not None:
+            if pet[0].registrar_id != user_id:
+                if db.session.execute(db.select(Adoptions).filter_by(pet_id=pet_id)).one_or_none() == None:
+                    adoption_statuses: ScalarResult[AdoptionStatus] = db.session.execute(db.select(AdoptionStatus)).scalars();
+                    pending_status_id = None
+                    
+                    for adoption_status in adoption_statuses:
+                        if adoption_status.name == AdoptionStatusEnum.PENDING.value:
+                            pending_status_id = adoption_status.id
+                    
+                    if pending_status_id is not None:
+                        adoption = Adoptions(
+                            adopter_id=user_id,
+                            pet_id=pet_id,
+                            status_id=pending_status_id
+                        )
+                        db.session.add(adoption)
+                        db.session.commit()
+                        db.session.flush()
+        return True
+    
     @staticmethod
     def register_pet(request: Request):
         user_id = session.get('id')

app/static/css/pets.css

@@ -38,6 +38,14 @@
     background-color: #fd0d99;
 }
 
+.fliping-card__side--front-adopted {
+    filter: grayscale(1);
+}
+
+.fliping-card__side--back a {
+    color: white;
+}
+
 .fliping-card:hover .fliping-card__side--back {
     transform: rotateY(0);
 }

app/templates/pets/index.html

@@ -7,6 +7,9 @@
 {% endblock %} 
 {% block content %}
 <div class="pets container">
+    <div class="row px-2">
+        {% include 'message.html' %}
+    </div>
     <div class="row px-2">
         <div class="card py-4 mb-3 mb-md-0 mt-4">
             <div class="col-12">
@@ -74,7 +77,11 @@
         {% for pet in pagination_result.items %}
             <div class="col-6 col-sm-4 col-md-4 col-lg-3 mt-3 mt-md-5">
                 <div class="fliping-card img-fluid mx-auto">
-                    <div class="fliping-card__side fliping-card__side--front">
+                    <div class="fliping-card__side fliping-card__side--front 
+                    {%if pet.adoption != none and pet.adoption.status.name != 'rejected' %}
+                    {{'fliping-card__side--front-adopted'}}
+                    {% endif %}
+                    ">
                         <img alt="pet" width="200" height="200" src="{{ pet.img_src }}" class="img-fluid">
                     </div>
                     <div class="fliping-card__side fliping-card__side--back 
@@ -89,7 +96,11 @@
                             <li>Age: {{pet.age}}, Sex: {{pet.sex}}</li>
                             <li>W: {{pet.weight}}lbs., H: {{pet.height}}ft.</li>
                             <li>Location: {{pet.location}}</li>
-                            <li>Ask for adoption!</li>
+                            {%if pet.adoption != none and pet.adoption.status.name != 'rejected' %}
+                                <li>This pet is currently in an adoption process.</li>
+                            {% else %}
+                                <li><a href="{% if session['id'] %} {{'/pets/adopt?id=' ~ pet.id}} {% else %} {{'/users/login'}}{% endif %}">Ask for adoption!</a></li>
+                            {% endif %}
                         </ul>
                     </div>
                 </div>

app/utils/adoption_status.py

@@ -0,0 +1,6 @@
+from enum import Enum
+
+class AdoptionStatusEnum(Enum):
+    APPROVED = "approved"
+    PENDING = "pending"
+    REJECTED = "rejected"

app/utils/db_utils.py

@@ -4,6 +4,7 @@ from app.models.pet import Pet
 from app.models.pet_kind import PetKind
 from app.models.adoptions import Adoptions
 from app.models.adoption_status import AdoptionStatus
+from app.utils.adoption_status import AdoptionStatusEnum
 from datetime import date
 from random import randrange
 from werkzeug.security import generate_password_hash
@@ -34,6 +35,13 @@ class DBUtils():
       db.session.add_all([dog,cat])
       db.session.commit()
       
+      """Adoption statuses"""
+      adoption_pending = AdoptionStatus(name=AdoptionStatusEnum.PENDING.value)
+      adoption_approved = AdoptionStatus(name=AdoptionStatusEnum.APPROVED.value)
+      adoption_rejected = AdoptionStatus(name=AdoptionStatusEnum.REJECTED.value)
+      db.session.add_all([adoption_pending,adoption_approved,adoption_rejected])
+      db.session.commit()
+
       """Pets"""
       pets = []
       for i in range(40):