"""仪表盘 + 结算路由"""
from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session
from sqlalchemy import func as sa_func
from datetime import date, timedelta
from database import get_db
from models import (
    User, UserRole, Project, Submission, AIToolCost,
    ProjectStatus, ProjectType, WorkType
)
from auth import get_current_user, require_role
from calculations import (
    calc_project_settlement, calc_waste_for_project,
    calc_labor_cost_for_project, calc_ai_tool_cost_for_project,
    calc_outsource_cost_for_project, calc_team_efficiency
)

router = APIRouter(prefix="/api", tags=["仪表盘与结算"])


@router.get("/dashboard")
def get_dashboard(
    db: Session = Depends(get_db),
    current_user: User = Depends(require_role(UserRole.OWNER))
):
    """全局仪表盘数据"""
    # 项目概览
    active = db.query(Project).filter(Project.status == ProjectStatus.IN_PROGRESS).all()
    completed = db.query(Project).filter(Project.status == ProjectStatus.COMPLETED).all()

    # 当月日期范围
    today = date.today()
    month_start = today.replace(day=1)

    # 本月人力成本（简化：统计本月所有有提交的人的日成本）
    monthly_submitters = db.query(Submission.user_id, Submission.submit_date).filter(
        Submission.submit_date >= month_start,
        Submission.submit_date <= today,
    ).distinct().all()

    monthly_labor = 0.0
    processed_user_dates = set()
    for uid, d in monthly_submitters:
        key = (uid, d)
        if key not in processed_user_dates:
            processed_user_dates.add(key)
            user = db.query(User).filter(User.id == uid).first()
            if user:
                monthly_labor += user.daily_cost

    # 本月 AI 工具成本
    monthly_ai = db.query(sa_func.sum(AIToolCost.amount)).filter(
        AIToolCost.record_date >= month_start,
        AIToolCost.record_date <= today,
    ).scalar() or 0

    # 本月总产出秒数
    monthly_secs = db.query(sa_func.sum(Submission.total_seconds)).filter(
        Submission.submit_date >= month_start,
        Submission.submit_date <= today,
        Submission.total_seconds > 0,
    ).scalar() or 0

    # 活跃人数
    active_users = db.query(Submission.user_id).filter(
        Submission.submit_date >= month_start,
    ).distinct().count()
    working_days = max(1, (today - month_start).days + 1)
    avg_daily = round(monthly_secs / max(1, active_users) / working_days, 1)

    # 各项目摘要
    project_summaries = []
    for p in active:
        waste = calc_waste_for_project(p.id, db)
        total_secs = waste.get("total_submitted_seconds", 0)
        target = p.target_total_seconds
        progress = round(total_secs / target * 100, 1) if target > 0 else 0
        is_overdue = (
            p.estimated_completion_date and today > p.estimated_completion_date
        )
        project_summaries.append({
            "id": p.id,
            "name": p.name,
            "project_type": p.project_type.value if hasattr(p.project_type, 'value') else p.project_type,
            "progress_percent": progress,
            "target_seconds": target,
            "submitted_seconds": total_secs,
            "waste_rate": waste.get("waste_rate", 0),
            "is_overdue": bool(is_overdue),
            "estimated_completion_date": str(p.estimated_completion_date) if p.estimated_completion_date else None,
        })

    # 损耗排行
    waste_ranking = []
    for p in active + completed:
        w = calc_waste_for_project(p.id, db)
        if w.get("total_waste_seconds", 0) > 0:
            waste_ranking.append({
                "project_id": p.id,
                "project_name": p.name,
                "waste_seconds": w["total_waste_seconds"],
                "waste_rate": w["waste_rate"],
            })
    waste_ranking.sort(key=lambda x: x["waste_rate"], reverse=True)

    # 已结算项目
    settled = []
    for p in completed:
        settlement = calc_project_settlement(p.id, db)
        settled.append({
            "project_id": p.id,
            "project_name": p.name,
            "project_type": settlement.get("project_type", ""),
            "total_cost": settlement.get("total_cost", 0),
            "contract_amount": settlement.get("contract_amount"),
            "profit_loss": settlement.get("profit_loss"),
        })

    return {
        "active_projects": len(active),
        "completed_projects": len(completed),
        "monthly_labor_cost": round(monthly_labor, 2),
        "monthly_ai_tool_cost": round(monthly_ai, 2),
        "monthly_total_seconds": round(monthly_secs, 1),
        "avg_daily_seconds_per_person": avg_daily,
        "projects": project_summaries,
        "waste_ranking": waste_ranking,
        "settled_projects": settled,
    }


@router.get("/projects/{project_id}/settlement")
def get_settlement(
    project_id: int,
    db: Session = Depends(get_db),
    current_user: User = Depends(require_role(UserRole.OWNER))
):
    """项目结算报告"""
    project = db.query(Project).filter(Project.id == project_id).first()
    if not project:
        raise HTTPException(status_code=404, detail="项目不存在")
    return calc_project_settlement(project_id, db)


@router.get("/projects/{project_id}/efficiency")
def get_efficiency(
    project_id: int,
    db: Session = Depends(get_db),
    current_user: User = Depends(require_role(UserRole.OWNER, UserRole.SUPERVISOR, UserRole.LEADER))
):
    """项目团队效率数据"""
    return calc_team_efficiency(project_id, db)