manage.py

from django.db import models
from django.contrib.auth.models import User

class Organization(models.Model):
    name = models.CharField(max_length=200)
    description = models.TextField()
    website = models.URLField(blank=True)
    created_at = models.DateTimeField(auto_now_add=True)
    
class Project(models.Model):
    STATUS_CHOICES = [
        ('OPEN', 'Open for Contributors'),
        ('IN_PROGRESS', 'In Progress'),
        ('COMPLETED', 'Completed'),
    ]
    
    organization = models.ForeignKey(Organization, on_delete=models.CASCADE)
    title = models.CharField(max_length=200)
    description = models.TextField()
    requirements = models.TextField()
    github_url = models.URLField()
    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='OPEN')
    created_at = models.DateTimeField(auto_now_add=True)

class Task(models.Model):
    PRIORITY_CHOICES = [
        ('LOW', 'Low'),
        ('MEDIUM', 'Medium'),
        ('HIGH', 'High'),
    ]
    
    STATUS_CHOICES = [
        ('OPEN', 'Open'),
        ('ASSIGNED', 'Assigned'),
        ('IN_PROGRESS', 'In Progress'),
        ('IN_REVIEW', 'In Review'),
        ('COMPLETED', 'Completed'),
    ]
    
    project = models.ForeignKey(Project, on_delete=models.CASCADE)
    title = models.CharField(max_length=200)
    description = models.TextField()
    priority = models.CharField(max_length=10, choices=PRIORITY_CHOICES)
    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='OPEN')
    assigned_to = models.ForeignKey(User, null=True, blank=True, on_delete=models.SET_NULL)
    created_at = models.DateTimeField(auto_now_add=True)

class Contribution(models.Model):
    task = models.ForeignKey(Task, on_delete=models.CASCADE)
    contributor = models.ForeignKey(User, on_delete=models.CASCADE)
    pull_request_url = models.URLField(blank=True)
    status = models.CharField(max_length=20)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

# views.py
from rest_framework import viewsets
from rest_framework.decorators import action
from rest_framework.response import Response
from rest_framework.permissions import IsAuthenticated

class ProjectViewSet(viewsets.ModelViewSet):
    queryset = Project.objects.all()
    serializer_class = ProjectSerializer
    
    @action(detail=True, methods=['post'])
    def volunteer(self, request, pk=None):
        project = self.get_object()
        task_id = request.data.get('task_id')
        
        task = Task.objects.get(id=task_id, project=project)
        task.assigned_to = request.user
        task.status = 'ASSIGNED'
        task.save()
        
        return Response({'status': 'assigned'})

class TaskViewSet(viewsets.ModelViewSet):
    queryset = Task.objects.all()
    serializer_class = TaskSerializer
    
    @action(detail=True, methods=['post'])
    def submit_contribution(self, request, pk=None):
        task = self.get_object()
        
        contribution = Contribution.objects.create(
            task=task,
            contributor=request.user,
            pull_request_url=request.data.get('pull_request_url'),
            status='PENDING_REVIEW'
        )
        
        return Response({'status': 'contribution submitted'})

# urls.py
from django.urls import path, include
from rest_framework.routers import DefaultRouter

router = DefaultRouter()
router.register(r'projects', ProjectViewSet)
router.register(r'tasks', TaskViewSet)

urlpatterns = [
    path('api/', include(router.urls)),
]