"""Admin API routes"""
from fastapi import APIRouter, Depends, HTTPException, Header
from fastapi.responses import JSONResponse
from pydantic import BaseModel
from typing import Optional, List
from ..core.auth import AuthManager
from ..core.database import Database
from ..services.token_manager import TokenManager
from ..services.proxy_manager import ProxyManager

router = APIRouter()

# Dependency injection
token_manager: TokenManager = None
proxy_manager: ProxyManager = None
db: Database = None


def set_dependencies(tm: TokenManager, pm: ProxyManager, database: Database):
    """Set service instances"""
    global token_manager, proxy_manager, db
    token_manager = tm
    proxy_manager = pm
    db = database


# ========== Request Models ==========

class LoginRequest(BaseModel):
    username: str
    password: str


class AddTokenRequest(BaseModel):
    st: str
    project_id: Optional[str] = None  # 用户可选输入project_id
    project_name: Optional[str] = None
    remark: Optional[str] = None
    image_enabled: bool = True
    video_enabled: bool = True
    image_concurrency: int = -1
    video_concurrency: int = -1


class UpdateTokenRequest(BaseModel):
    st: str  # Session Token (必填，用于刷新AT)
    project_id: Optional[str] = None  # 用户可选输入project_id
    project_name: Optional[str] = None
    remark: Optional[str] = None
    image_enabled: Optional[bool] = None
    video_enabled: Optional[bool] = None
    image_concurrency: Optional[int] = None
    video_concurrency: Optional[int] = None


class ProxyConfigRequest(BaseModel):
    proxy_enabled: bool
    proxy_url: Optional[str] = None


class GenerationConfigRequest(BaseModel):
    image_timeout: int
    video_timeout: int


class ChangePasswordRequest(BaseModel):
    old_password: str
    new_password: str


class UpdateAPIKeyRequest(BaseModel):
    new_api_key: str


class UpdateDebugConfigRequest(BaseModel):
    enabled: bool


class ST2ATRequest(BaseModel):
    """ST转AT请求"""
    st: str


# ========== Auth Middleware ==========

async def verify_admin_token(authorization: str = Header(None)):
    """Verify admin token"""
    if not authorization or not authorization.startswith("Bearer "):
        raise HTTPException(status_code=401, detail="Missing authorization")

    token = authorization[7:]
    admin_config = await db.get_admin_config()

    # Simple token verification: check if matches api_key
    if token != admin_config.api_key:
        raise HTTPException(status_code=401, detail="Invalid admin token")

    return token


# ========== Auth Endpoints ==========

@router.post("/api/admin/login")
async def admin_login(request: LoginRequest):
    """Admin login"""
    admin_config = await db.get_admin_config()

    if not AuthManager.verify_admin(request.username, request.password):
        raise HTTPException(status_code=401, detail="Invalid credentials")

    return {
        "success": True,
        "token": admin_config.api_key,
        "username": admin_config.username
    }


@router.post("/api/admin/change-password")
async def change_password(
    request: ChangePasswordRequest,
    token: str = Depends(verify_admin_token)
):
    """Change admin password"""
    admin_config = await db.get_admin_config()

    # Verify old password
    if not AuthManager.verify_admin(admin_config.username, request.old_password):
        raise HTTPException(status_code=400, detail="旧密码错误")

    # Update password
    await db.update_admin_config(password=request.new_password)

    return {"success": True, "message": "密码修改成功"}


# ========== Token Management ==========

@router.get("/api/tokens")
async def get_tokens(token: str = Depends(verify_admin_token)):
    """Get all tokens with statistics"""
    tokens = await token_manager.get_all_tokens()
    result = []

    for t in tokens:
        stats = await db.get_token_stats(t.id)

        result.append({
            "id": t.id,
            "st": t.st,  # Session Token for editing
            "at": t.at,  # Access Token for editing (从ST转换而来)
            "at_expires": t.at_expires.isoformat() if t.at_expires else None,  # 🆕 AT过期时间
            "token": t.at,  # 兼容前端 token.token 的访问方式
            "email": t.email,
            "name": t.name,
            "remark": t.remark,
            "is_active": t.is_active,
            "created_at": t.created_at.isoformat() if t.created_at else None,
            "last_used_at": t.last_used_at.isoformat() if t.last_used_at else None,
            "use_count": t.use_count,
            "credits": t.credits,  # 🆕 余额
            "user_paygate_tier": t.user_paygate_tier,
            "current_project_id": t.current_project_id,  # 🆕 项目ID
            "current_project_name": t.current_project_name,  # 🆕 项目名称
            "image_enabled": t.image_enabled,
            "video_enabled": t.video_enabled,
            "image_concurrency": t.image_concurrency,
            "video_concurrency": t.video_concurrency,
            "image_count": stats.image_count if stats else 0,
            "video_count": stats.video_count if stats else 0,
            "error_count": stats.error_count if stats else 0
        })

    return result  # 直接返回数组,兼容前端


@router.post("/api/tokens")
async def add_token(
    request: AddTokenRequest,
    token: str = Depends(verify_admin_token)
):
    """Add a new token"""
    try:
        new_token = await token_manager.add_token(
            st=request.st,
            project_id=request.project_id,  # 🆕 支持用户指定project_id
            project_name=request.project_name,
            remark=request.remark,
            image_enabled=request.image_enabled,
            video_enabled=request.video_enabled,
            image_concurrency=request.image_concurrency,
            video_concurrency=request.video_concurrency
        )

        return {
            "success": True,
            "message": "Token添加成功",
            "token": {
                "id": new_token.id,
                "email": new_token.email,
                "credits": new_token.credits,
                "project_id": new_token.current_project_id,
                "project_name": new_token.current_project_name
            }
        }
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e))
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"添加Token失败: {str(e)}")


@router.put("/api/tokens/{token_id}")
async def update_token(
    token_id: int,
    request: UpdateTokenRequest,
    token: str = Depends(verify_admin_token)
):
    """Update token - 使用ST自动刷新AT"""
    try:
        # 先ST转AT
        result = await token_manager.flow_client.st_to_at(request.st)
        at = result["access_token"]
        expires = result.get("expires")

        # 解析过期时间
        from datetime import datetime
        at_expires = None
        if expires:
            try:
                at_expires = datetime.fromisoformat(expires.replace('Z', '+00:00'))
            except:
                pass

        # 更新token (包含AT、ST、AT过期时间、project_id和project_name)
        await token_manager.update_token(
            token_id=token_id,
            st=request.st,
            at=at,
            at_expires=at_expires,  # 🆕 更新AT过期时间
            project_id=request.project_id,
            project_name=request.project_name,
            remark=request.remark,
            image_enabled=request.image_enabled,
            video_enabled=request.video_enabled,
            image_concurrency=request.image_concurrency,
            video_concurrency=request.video_concurrency
        )

        return {"success": True, "message": "Token更新成功"}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.delete("/api/tokens/{token_id}")
async def delete_token(
    token_id: int,
    token: str = Depends(verify_admin_token)
):
    """Delete token"""
    try:
        await token_manager.delete_token(token_id)
        return {"success": True, "message": "Token删除成功"}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.post("/api/tokens/{token_id}/enable")
async def enable_token(
    token_id: int,
    token: str = Depends(verify_admin_token)
):
    """Enable token"""
    await token_manager.enable_token(token_id)
    return {"success": True, "message": "Token已启用"}


@router.post("/api/tokens/{token_id}/disable")
async def disable_token(
    token_id: int,
    token: str = Depends(verify_admin_token)
):
    """Disable token"""
    await token_manager.disable_token(token_id)
    return {"success": True, "message": "Token已禁用"}


@router.post("/api/tokens/{token_id}/refresh-credits")
async def refresh_credits(
    token_id: int,
    token: str = Depends(verify_admin_token)
):
    """刷新Token余额 🆕"""
    try:
        credits = await token_manager.refresh_credits(token_id)
        return {
            "success": True,
            "message": "余额刷新成功",
            "credits": credits
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"刷新余额失败: {str(e)}")


@router.post("/api/tokens/{token_id}/refresh-at")
async def refresh_at(
    token_id: int,
    token: str = Depends(verify_admin_token)
):
    """手动刷新Token的AT (使用ST转换) 🆕"""
    try:
        # 调用token_manager的内部刷新方法
        success = await token_manager._refresh_at(token_id)

        if success:
            # 获取更新后的token信息
            updated_token = await token_manager.get_token(token_id)
            return {
                "success": True,
                "message": "AT刷新成功",
                "token": {
                    "id": updated_token.id,
                    "email": updated_token.email,
                    "at_expires": updated_token.at_expires.isoformat() if updated_token.at_expires else None
                }
            }
        else:
            raise HTTPException(status_code=500, detail="AT刷新失败")
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"刷新AT失败: {str(e)}")


@router.post("/api/tokens/st2at")
async def st_to_at(
    request: ST2ATRequest,
    token: str = Depends(verify_admin_token)
):
    """Convert Session Token to Access Token (仅转换,不添加到数据库)"""
    try:
        result = await token_manager.flow_client.st_to_at(request.st)
        return {
            "success": True,
            "message": "ST converted to AT successfully",
            "access_token": result["access_token"],
            "email": result.get("user", {}).get("email"),
            "expires": result.get("expires")
        }
    except Exception as e:
        raise HTTPException(status_code=400, detail=str(e))


# ========== Config Management ==========

@router.get("/api/config/proxy")
async def get_proxy_config(token: str = Depends(verify_admin_token)):
    """Get proxy configuration"""
    config = await proxy_manager.get_proxy_config()
    return {
        "success": True,
        "config": {
            "enabled": config.enabled,
            "proxy_url": config.proxy_url
        }
    }


@router.get("/api/proxy/config")
async def get_proxy_config_alias(token: str = Depends(verify_admin_token)):
    """Get proxy configuration (alias for frontend compatibility)"""
    config = await proxy_manager.get_proxy_config()
    return {
        "proxy_enabled": config.enabled,  # Frontend expects proxy_enabled
        "proxy_url": config.proxy_url
    }


@router.post("/api/proxy/config")
async def update_proxy_config_alias(
    request: ProxyConfigRequest,
    token: str = Depends(verify_admin_token)
):
    """Update proxy configuration (alias for frontend compatibility)"""
    await proxy_manager.update_proxy_config(request.proxy_enabled, request.proxy_url)
    return {"success": True, "message": "代理配置更新成功"}


@router.post("/api/config/proxy")
async def update_proxy_config(
    request: ProxyConfigRequest,
    token: str = Depends(verify_admin_token)
):
    """Update proxy configuration"""
    await proxy_manager.update_proxy_config(request.proxy_enabled, request.proxy_url)
    return {"success": True, "message": "代理配置更新成功"}


@router.get("/api/config/generation")
async def get_generation_config(token: str = Depends(verify_admin_token)):
    """Get generation timeout configuration"""
    config = await db.get_generation_config()
    return {
        "success": True,
        "config": {
            "image_timeout": config.image_timeout,
            "video_timeout": config.video_timeout
        }
    }


@router.post("/api/config/generation")
async def update_generation_config(
    request: GenerationConfigRequest,
    token: str = Depends(verify_admin_token)
):
    """Update generation timeout configuration"""
    await db.update_generation_config(request.image_timeout, request.video_timeout)
    return {"success": True, "message": "生成配置更新成功"}


# ========== System Info ==========

@router.get("/api/system/info")
async def get_system_info(token: str = Depends(verify_admin_token)):
    """Get system information"""
    tokens = await token_manager.get_all_tokens()
    active_tokens = [t for t in tokens if t.is_active]

    total_credits = sum(t.credits for t in active_tokens)

    return {
        "success": True,
        "info": {
            "total_tokens": len(tokens),
            "active_tokens": len(active_tokens),
            "total_credits": total_credits,
            "version": "1.0.0"
        }
    }


# ========== Additional Routes for Frontend Compatibility ==========

@router.post("/api/login")
async def login(request: LoginRequest):
    """Login endpoint (alias for /api/admin/login)"""
    return await admin_login(request)


@router.get("/api/stats")
async def get_stats(token: str = Depends(verify_admin_token)):
    """Get statistics for dashboard"""
    tokens = await token_manager.get_all_tokens()
    active_tokens = [t for t in tokens if t.is_active]

    # Calculate totals
    total_images = 0
    total_videos = 0
    total_errors = 0
    today_images = 0
    today_videos = 0
    today_errors = 0

    for t in tokens:
        stats = await db.get_token_stats(t.id)
        if stats:
            total_images += stats.image_count
            total_videos += stats.video_count
            total_errors += stats.error_count
            today_images += stats.today_image_count
            today_videos += stats.today_video_count
            today_errors += stats.today_error_count

    return {
        "total_tokens": len(tokens),
        "active_tokens": len(active_tokens),
        "total_images": total_images,
        "total_videos": total_videos,
        "total_errors": total_errors,
        "today_images": today_images,
        "today_videos": today_videos,
        "today_errors": today_errors
    }


@router.get("/api/logs")
async def get_logs(
    limit: int = 100,
    token: str = Depends(verify_admin_token)
):
    """Get request logs with token email"""
    logs = await db.get_logs(limit=limit)

    return [{
        "id": log.get("id"),
        "token_id": log.get("token_id"),
        "token_email": log.get("token_email"),
        "token_username": log.get("token_username"),
        "operation": log.get("operation"),
        "status_code": log.get("status_code"),
        "duration": log.get("duration"),
        "created_at": log.get("created_at")
    } for log in logs]


@router.get("/api/admin/config")
async def get_admin_config(token: str = Depends(verify_admin_token)):
    """Get admin configuration"""
    from ..core.config import config

    admin_config = await db.get_admin_config()

    return {
        "admin_username": admin_config.username,
        "api_key": admin_config.api_key,
        "error_ban_threshold": 3,  # Default value
        "debug_enabled": config.debug_enabled  # Return actual debug status
    }


@router.post("/api/admin/password")
async def update_admin_password(
    request: ChangePasswordRequest,
    token: str = Depends(verify_admin_token)
):
    """Update admin password"""
    return await change_password(request, token)


@router.post("/api/admin/apikey")
async def update_api_key(
    request: UpdateAPIKeyRequest,
    token: str = Depends(verify_admin_token)
):
    """Update API key"""
    await db.update_admin_config(api_key=request.new_api_key)
    return {"success": True, "message": "API Key更新成功"}


@router.post("/api/admin/debug")
async def update_debug_config(
    request: UpdateDebugConfigRequest,
    token: str = Depends(verify_admin_token)
):
    """Update debug configuration"""
    try:
        # Import config instance
        from ..core.config import config

        # Update in-memory config
        config.set_debug_enabled(request.enabled)

        status = "enabled" if request.enabled else "disabled"
        return {"success": True, "message": f"Debug mode {status}", "enabled": request.enabled}
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Failed to update debug config: {str(e)}")


@router.get("/api/generation/timeout")
async def get_generation_timeout(token: str = Depends(verify_admin_token)):
    """Get generation timeout configuration"""
    return await get_generation_config(token)


@router.post("/api/generation/timeout")
async def update_generation_timeout(
    request: GenerationConfigRequest,
    token: str = Depends(verify_admin_token)
):
    """Update generation timeout configuration"""
    return await update_generation_config(request, token)


# ========== AT Auto Refresh Config ==========

@router.get("/api/token-refresh/config")
async def get_token_refresh_config(token: str = Depends(verify_admin_token)):
    """Get AT auto refresh configuration (默认启用)"""
    return {
        "success": True,
        "config": {
            "at_auto_refresh_enabled": True  # Flow2API默认启用AT自动刷新
        }
    }


@router.post("/api/token-refresh/enabled")
async def update_token_refresh_enabled(
    token: str = Depends(verify_admin_token)
):
    """Update AT auto refresh enabled (Flow2API固定启用,此接口仅用于前端兼容)"""
    return {
        "success": True,
        "message": "Flow2API的AT自动刷新默认启用且无法关闭"
    }


# ========== Cache Configuration Endpoints ==========

@router.get("/api/cache/config")
async def get_cache_config(token: str = Depends(verify_admin_token)):
    """Get cache configuration"""
    cache_config = await db.get_cache_config()

    # Calculate effective base URL
    effective_base_url = cache_config.cache_base_url if cache_config.cache_base_url else f"http://127.0.0.1:8000"

    return {
        "success": True,
        "config": {
            "enabled": cache_config.cache_enabled,
            "timeout": cache_config.cache_timeout,
            "base_url": cache_config.cache_base_url or "",
            "effective_base_url": effective_base_url
        }
    }


@router.post("/api/cache/enabled")
async def update_cache_enabled(
    request: dict,
    token: str = Depends(verify_admin_token)
):
    """Update cache enabled status"""
    enabled = request.get("enabled", False)
    await db.update_cache_config(enabled=enabled)

    # Update runtime config
    from ..core.config import config
    config.set_cache_enabled(enabled)

    return {"success": True, "message": f"缓存已{'启用' if enabled else '禁用'}"}


@router.post("/api/cache/config")
async def update_cache_config_full(
    request: dict,
    token: str = Depends(verify_admin_token)
):
    """Update complete cache configuration"""
    enabled = request.get("enabled")
    timeout = request.get("timeout")
    base_url = request.get("base_url")

    await db.update_cache_config(enabled=enabled, timeout=timeout, base_url=base_url)

    # Update runtime config
    from ..core.config import config
    if enabled is not None:
        config.set_cache_enabled(enabled)
    if timeout is not None:
        config.set_cache_timeout(timeout)
    if base_url is not None:
        config.set_cache_base_url(base_url)

    return {"success": True, "message": "缓存配置更新成功"}


@router.post("/api/cache/base-url")
async def update_cache_base_url(
    request: dict,
    token: str = Depends(verify_admin_token)
):
    """Update cache base URL"""
    base_url = request.get("base_url", "")
    await db.update_cache_config(base_url=base_url)

    # Update runtime config
    from ..core.config import config
    config.set_cache_base_url(base_url)

    return {"success": True, "message": "缓存Base URL更新成功"}