from fastapi import APIRouter, HTTPException, Depends, Request
from typing import List, Annotated

from httpx import request
from jose import JWTError, jwt

from routers import auth
from database import db_dependency

import schemas.tasks as tasks_schemas
import schemas.projects as projects_schemas
import schemas.users as users_schemas

from models import Project
from routers.auth import get_user_from_jwt

router = APIRouter(prefix="/projects", tags=["projects"])

##
## GET endpoints
##

@router.get("/", response_model=List[projects_schemas.ProjectBase], tags=["projects", "me"])
def get_projects(db: db_dependency, request: Request):
    """Get a user's projects"""

    user = get_user_from_jwt(request, db)
    user_id = getattr(user, "id")

    ## fetching projects for the user
    projects = db.query(Project).join(Project.users).filter(getattr(users_schemas.UserBase, "id") == int(user_id)).all()
    return projects


@router.get("/{project_id}", response_model=projects_schemas.ProjectBase)
def get_project(project_id: int, request:Request, db: db_dependency):
    """Get a project by ID"""
    
    user = get_user_from_jwt(request, db)

    db_project = db.query(projects_schemas.ProjectBase).filter(getattr(projects_schemas.ProjectBase, "id") == project_id).first()
    if db_project is None:
        raise HTTPException(status_code=404, detail="Project not found")
    if  user not in db_project.users:
        raise HTTPException(status_code=403, detail="Not authorized to access this project")
    
    return db_project

@router.get("/{project_id}/users", response_model=List[users_schemas.UserBase], tags=["users", "projects"])
def get_project_users(project_id: int, request:Request, db: db_dependency):
    """Get users from a specified project"""
    
    user = get_user_from_jwt(request, db)
    db_project = db.query(projects_schemas.ProjectBase).filter(getattr(projects_schemas.ProjectBase, "id") == project_id).first()
    if db_project is None:
        raise HTTPException(status_code=404, detail="Project not found")
    if  user not in db_project.users:
        raise HTTPException(status_code=403, detail="Not authorized to access this project's users")
    
    return db_project.users

@router.get("/{project_id}/tasks", response_model=List[tasks_schemas.TaskBase], tags=["tasks", "projects"])
def get_project_tasks(project_id: int, request:Request, db: db_dependency):
    """Get tasks from a specified project"""
    
    user = get_user_from_jwt(request, db)

    db_project = db.query(projects_schemas.ProjectBase).filter(getattr(projects_schemas.ProjectBase, "id") == project_id).first()
    if db_project is None:
        raise HTTPException(status_code=404, detail="Project not found")
    if  user not in db_project.users:
        raise HTTPException(status_code=403, detail="Not authorized to access this project's tasks")
    
    return db.query(tasks_schemas.TaskBase).filter(getattr(tasks_schemas.TaskBase, "project_id") == project_id).all()

@router.post("/", response_model=projects_schemas.ProjectCreate)
def create_project(project: projects_schemas.ProjectCreate, request:Request, db: db_dependency):
    """Create a new project"""
    
    user = get_user_from_jwt(request, db)
    db_project = projects_schemas.ProjectCreate(
        name=project.name,
        description=project.description,
        tasks=[],
        user_ids=[getattr(user, "id")]
    )
    db.add(db_project)
    db.commit()
    db.refresh(db_project)
    
    db.commit()
    db.refresh(db_project)
    
    return db_project

# """Get tasks from a specified project"""
# @router.get("/{project_id}/tasks", response_model=List[tasks_schemas.TaskBase], tags=["tasks"])
# def read_tasks_from_project(project_id: int, db: db_dependency):
#     db_tasks = db.query(tasks.models.Task).filter(tasks.models.Task.project_id == project_id).all()
#     return db_tasks

# """Get a specific task from a specified project"""
# @router.get("/{project_id}/tasks/{task_id}", response_model=tasks_schemas.TaskBase, tags=["tasks"])
# def read_task_from_project(project_id: int, task_id: int, db: db_dependency):
#     db_task = db.query(tasks.models.Task).filter(tasks.models.Task.project_id == project_id, tasks.models.Task.id == task_id).first()
#     if db_task is None:
#         raise HTTPException(status_code=404, detail="Task not found in the specified project")
#     return db_task


# """Get users from a specified project"""

# @router.get("/{project_id}/users", response_model=List[users_schemas.UserBase], tags=["users"])
# def read_users_from_project(project_id: int, db: db_dependency):
#     db_project = db.query(projects.models.Project).filter(projects.models.Project.id == project_id).first()
#     if db_project is None:
#         raise HTTPException(status_code=404, detail="Project not found")
#     return db_project.users


# ##
# ## POST endpoints
# ##


# """Create a new project"""

# @router.post("/", response_model=projects.ProjectCreate)
# def create_project(project: projects.ProjectCreate, db: db_dependency):
#     db_project = projects(
#         name=project.name,
#         description=project.description
#     )
#     db.add(db_project)
#     db.commit()
#     db.refresh(db_project)
#     return db_project


# """Create a new task in a specified project"""

# @router.post("/{project_id}/tasks", response_model=tasks.TaskBase, tags=["tasks"])
# def create_task_in_project(project_id: int, task: tasks.TaskBase, db: db_dependency):
#     db_task = tasks.models.Task(
#         title=task.title,
#         description=task.description,
#         status=task.status,
#         project_id=project_id
#     )
#     db.add(db_task)
#     db.commit()
#     db.refresh(db_task)
#     return db_task


# """Add users to a specified project using their IDs"""

# @router.post("/{project_id}/users", response_model=projects.ProjectAddUsers, tags=["users"])
# def add_users_to_project(project_id: int, user_data: projects.ProjectAddUsers, db: db_dependency):
#     db_project = db.query(projects.models.Project).filter(projects.models.Project.id == project_id).first()
#     if db_project is None:
#         raise HTTPException(status_code=404, detail="Project not found")
#     for user_id in user_data.user_ids:
#         db_user = db.query(users.models.User).filter(users.models.User.id == user_id).first()
#         if db_user:
#             db_project.users.append(db_user)
#     db.commit()
#     db.refresh(db_project)
#     return db_project


# ##
# ## PUT endpoints
# ##


# """Update a project by ID"""

# @router.put("/{project_id}", response_model=projects.ProjectUpdate)
# def update_project(project_id: int, project: projects.ProjectUpdate, db: db_dependency):
#     db_project = db.query(projects.models.Project).filter(projects.models.Project.id == project_id).first()
#     if db_project is None:
#         raise HTTPException(status_code=404, detail="Project not found")
#     if project.name is not None:
#         db_project.name = project.name
#     if project.description is not None:
#         db_project.description = project.description
#     db.commit()
#     db.refresh(db_project)
#     return db_project


# """Update a task in a specified project"""

# @router.put("/{project_id}/tasks/{task_id}", response_model=tasks.TaskUpdate, tags=["tasks"])
# def update_task_in_project(project_id: int, task_id: int, task: tasks.TaskUpdate, db: db_dependency):
#     db_task = db.query(tasks.models.Task).filter(tasks.models.Task.project_id == project_id, tasks.models.Task.id == task_id).first()
#     if db_task is None:
#         raise HTTPException(status_code=404, detail="Task not found in the specified project")
#     if task.title is not None:
#         db_task.title = task.title
#     if task.description is not None:
#         db_task.description = task.description
#     if task.status is not None:
#         db_task.status = task.status
#     db.commit()
#     db.refresh(db_task)
#     return db_task

# ##
# ## DELETE endpoints
# ##

# """Delete a project by ID"""

# @router.delete("/{project_id}")
# def delete_project(project_id: int, db: db_dependency):
#     db_project = db.query(projects.models.Project).filter(projects.models.Project.id == project_id).first()
#     if db_project is None:
#         raise HTTPException(status_code=404, detail="Project not found")
#     db.delete(db_project)
#     db.commit()
#     return {"detail": "Project deleted successfully"}


# """Delete a task from a specified project"""

# @router.delete("/{project_id}/tasks/{task_id}" , tags=["tasks"])
# def delete_task_from_project(project_id: int, task_id: int, db: db_dependency):
#     db_task = db.query(tasks.models.Task).filter(tasks.models.Task.project_id == project_id, tasks.models.Task.id == task_id).first()
#     if db_task is None:
#         raise HTTPException(status_code=404, detail="Task not found in the specified project")
#     db.delete(db_task)
#     db.commit()
#     return {"detail": "Task deleted successfully"}


# """Remove users from a specified project using their IDs"""

# @router.delete("/{project_id}/users/{user_id}", tags=["users"])
# def remove_user_from_project(project_id: int, user_id: int, db: db_dependency):
#     db_project = db.query(projects.models.Project).filter(projects.models.Project.id == project_id).first()
#     if db_project is None:
#         raise HTTPException(status_code=404, detail="Project not found")
#     db_user = db.query(users.models.User).filter(users.models.User.id == user_id).first()
#     if db_user is None or db_user not in db_project.users:
#         raise HTTPException(status_code=404, detail="User not found in the specified project")
#     db_project.users.remove(db_user)
#     db.commit()
#     db.refresh(db_project)
#     return {"detail": "User removed from project successfully"}