from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session
from pydantic import BaseModel
from typing import List, Optional

from ..models.database import get_db, ProjectMapping, BranchJob, BranchPattern
from ..auth.middleware import auth_middleware

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

# 请求/响应模型
class ProjectCreate(BaseModel):
    name: str
    jenkinsJob: str
    giteaRepo: str

class ProjectResponse(BaseModel):
    id: int
    name: str
    jenkinsJob: str
    giteaRepo: str
    created_at: str

    class Config:
        from_attributes = True

class ProjectList(BaseModel):
    projects: List[ProjectResponse]

@router.post("/", response_model=ProjectResponse)
async def create_project(
    request: ProjectCreate,
    db: Session = Depends(get_db),
    current_user: dict = Depends(auth_middleware.get_current_user)
):
    """创建新项目映射"""
    # 检查项目是否已存在
    existing_project = db.query(ProjectMapping).filter(
        ProjectMapping.repository_name == request.giteaRepo
    ).first()
    
    if existing_project:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Project with this repository already exists"
        )
    
    # 创建新项目
    project = ProjectMapping(
        repository_name=request.giteaRepo,
        default_job=request.jenkinsJob
    )
    
    db.add(project)
    db.commit()
    db.refresh(project)
    
    return ProjectResponse(
        id=project.id,
        name=request.name,
        jenkinsJob=project.default_job,
        giteaRepo=project.repository_name,
        created_at=project.created_at.isoformat()
    )

@router.get("/", response_model=ProjectList)
async def list_projects(
    db: Session = Depends(get_db),
    current_user: dict = Depends(auth_middleware.get_current_user)
):
    """获取所有项目"""
    projects = db.query(ProjectMapping).order_by(ProjectMapping.created_at.desc()).all()
    
    return ProjectList(
        projects=[
            ProjectResponse(
                id=project.id,
                name=project.repository_name.split('/')[-1],  # 使用仓库名作为项目名
                jenkinsJob=project.default_job,
                giteaRepo=project.repository_name,
                created_at=project.created_at.isoformat()
            )
            for project in projects
        ]
    )

@router.get("/{project_id}", response_model=ProjectResponse)
async def get_project(
    project_id: int,
    db: Session = Depends(get_db),
    current_user: dict = Depends(auth_middleware.get_current_user)
):
    """获取特定项目"""
    project = db.query(ProjectMapping).filter(ProjectMapping.id == project_id).first()
    
    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Project not found"
        )
    
    return ProjectResponse(
        id=project.id,
        name=project.repository_name.split('/')[-1],
        jenkinsJob=project.default_job,
        giteaRepo=project.repository_name,
        created_at=project.created_at.isoformat()
    )

@router.delete("/{project_id}")
async def delete_project(
    project_id: int,
    db: Session = Depends(get_db),
    current_user: dict = Depends(auth_middleware.get_current_user)
):
    """删除项目"""
    project = db.query(ProjectMapping).filter(ProjectMapping.id == project_id).first()
    
    if not project:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Project not found"
        )
    
    db.delete(project)
    db.commit()
    
    return {"message": "Project deleted successfully"}

@router.get("/mapping/{repository_name}")
async def get_project_mapping(
    repository_name: str,
    db: Session = Depends(get_db)
):
    """根据仓库名获取项目映射（用于 webhook 处理）"""
    project = db.query(ProjectMapping).filter(
        ProjectMapping.repository_name == repository_name
    ).first()
    
    if not project:
        return None
    
    return {
        "id": project.id,
        "repository_name": project.repository_name,
        "default_job": project.default_job,
        "branch_jobs": [
            {
                "branch_name": job.branch_name,
                "job_name": job.job_name
            }
            for job in project.branch_jobs
        ],
        "branch_patterns": [
            {
                "pattern": pattern.pattern,
                "job_name": pattern.job_name
            }
            for pattern in project.branch_patterns
        ]
    }