from __future__ import annotations

from .shared import *
from .schemas import BlockerResolveRequest, CodeCommentScanRequest, DailyBriefingResponse

@router.get("/daily-briefing")
async def get_daily_briefing(
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id)
):
    """
    获取个性化每日简报

    AI 为每个角色生成定制化简报，只包含：
    - 与你相关的任务变更
    - 风险提醒
    - 需要对齐的事项
    - 高影响信号
    - 团队更新

    彻底过滤无关信息，替代传统日报/周报
    """
    try:
        service = get_daily_briefing_service(db)
        briefing = await service.generate_personalized_briefing(
            user_id=int(current_user.id),
            tenant_id=tenant_id
        )
        return briefing
    except Exception as e:
        raise HTTPException(
            status_code=500,
            detail=f"生成简报失败: {str(e)}"
        )

@router.get("/daily-briefing/team/{project_id}")
async def get_team_briefing(
    project_id: int,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id)
):
    """
    获取团队简报（给管理者）

    包含：
    - 整体进度
    - 每个成员的工作量
    - 风险和阻塞
    - 需要决策的事项
    """
    try:
        service = get_daily_briefing_service(db)
        briefing = await service.generate_team_briefing(
            project_id=project_id,
            tenant_id=tenant_id
        )
        return briefing
    except ValueError as e:
        raise HTTPException(status_code=404, detail=str(e))
    except Exception as e:
        raise HTTPException(
            status_code=500,
            detail=f"生成团队简报失败: {str(e)}"
        )

@router.post("/analyze-blocker")
async def analyze_blocker(
    code_context: str,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id)
):
    """
    分析代码阻塞

    当开发在代码注释中提到「这个接口达不到效果」时，
    AI 自动触发分析，推荐替代方案或生成代码片段
    """
    from ..services.llm import LLMService

    service = get_ai_steward_service(db)

    prompt = f"""分析以下代码/注释中提到的问题，提供解决方案：

代码上下文：
{code_context}

请提供：
1. 问题分析
2. 推荐的替代方案
3. 示例代码（如适用）

以 JSON 格式返回。"""

    try:
        llm = LLMService()
        response = await llm.generate(
            prompt,
            db=db,
            tenant_id=tenant_id,
        )

        return {
            'analysis': response,
            'suggestions': [],
            'auto_generated': True
        }
    except Exception as e:
        raise HTTPException(
            status_code=500,
            detail=f"分析失败: {str(e)}"
        )

@router.post("/blockers/scan-comment")
async def scan_code_comment_for_blockers(
    request: CodeCommentScanRequest,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id)
):
    """
    扫描代码注释，检测阻塞

    自动识别阻塞模式：
    - "等待 X 接口完成"
    - "这个 API 达不到效果"
    - "由于 Y 的限制，暂时跳过"

    如果检测到阻塞，AI 会自动：
    1. 分析严重程度
    2. 生成解决方案建议
    3. 创建追踪任务（如需要）
    """
    try:
        service = get_blocker_detection_service(db)
        result = await service.scan_code_comment(
            code_content=request.code_content,
            file_path=request.file_path,
            line_number=request.line_number,
            project_id=request.project_id,
            user_id=int(current_user.id),
            tenant_id=tenant_id
        )

        if result:
            return {
                'status': 'blocker_detected',
                'blocker': result
            }

        return {
            'status': 'no_blocker',
            'message': '未检测到阻塞'
        }

    except Exception as e:
        raise HTTPException(
            status_code=500,
            detail=f"扫描失败: {str(e)}"
        )

@router.post("/blockers/detect-tasks")
async def detect_task_blockers(
    background_tasks: BackgroundTasks,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id)
):
    """
    检测所有任务中的阻塞

    扫描所有超过3天未更新的进行中任务，
    使用 AI 判断是否存在阻塞
    """
    try:
        service = get_blocker_detection_service(db)
        blockers = await service.detect_task_blockers(tenant_id=tenant_id)

        return {
            'total_detected': len(blockers),
            'blockers': blockers
        }

    except Exception as e:
        raise HTTPException(
            status_code=500,
            detail=f"检测失败: {str(e)}"
        )

@router.get("/blockers/active")
async def get_active_blockers(
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id)
):
    """
    获取所有活跃的阻塞

    返回所有未解决的阻塞，按严重程度排序
    """
    try:
        service = get_blocker_detection_service(db)
        blockers = await service.get_active_blockers(tenant_id=tenant_id)

        # 按严重程度排序
        severity_order = {'high': 0, 'medium': 1, 'low': 2}
        blockers.sort(key=lambda b: severity_order.get(b['severity'], 1))

        return {
            'total': len(blockers),
            'blockers': blockers
        }

    except Exception as e:
        raise HTTPException(
            status_code=500,
            detail=f"获取失败: {str(e)}"
        )

@router.post("/blockers/resolve")
async def resolve_blocker(
    request: BlockerResolveRequest,
    current_user: User = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
    tenant_id: int = Depends(get_tenant_id)
):
    """
    标记阻塞为已解决

    记录解决方案并关闭阻塞记录
    """
    try:
        service = get_blocker_detection_service(db)
        result = await service.resolve_blocker(
            blocker_id=request.blocker_id,
            resolution_note=request.resolution_note,
            tenant_id=tenant_id
        )

        return result

    except ValueError as e:
        raise HTTPException(status_code=404, detail=str(e))
    except Exception as e:
        raise HTTPException(
            status_code=500,
            detail=f"解决失败: {str(e)}"
        )