from fastapi import APIRouter, Cookie, HTTPException, Request
from fastapi.responses import HTMLResponse

from app.config.system_config import seed_runtime_system_defaults
from app.db import auth_db
from app.db import chat_assistant_db
from app.db.scheduler_db import (
    enqueue_manual_trigger,
    get_job_config,
    get_scheduler_overview,
    list_manual_triggers,
    set_job_enabled,
    set_job_interval,
)
from app.db.runtime_config_db import delete_config, get_config, list_configs, set_config
from app.db.system_logs import get_system_error, get_system_error_stats, list_system_errors
from app.web.shared import (
    RuntimeConfigRequest,
    SchedulerIntervalRequest,
    SchedulerToggleRequest,
    SchedulerTriggerRequest,
    login_redirect,
    require_admin,
)

def build_router(templates):
    router = APIRouter()

    @router.get("/admin.html", response_class=HTMLResponse)
    async def admin_page(request: Request, altcoin_session: str = Cookie(default="")):
        if not auth_db.get_user_by_session_token(altcoin_session):
            return login_redirect()
        try:
            require_admin(altcoin_session)
        except HTTPException as e:
            return HTMLResponse(content=f"<meta charset=utf-8><h2>需要管理员权限</h2><p>{e.detail}</p><a href=/app>返回看板</a>", status_code=e.status_code)
        return templates.TemplateResponse(request=request, name="admin.html", context={"show_nav": True, "active_nav": "admin"})

    @router.get("/api/admin/check")
    async def api_admin_check(altcoin_session: str = Cookie(default="")):
        try:
            user = require_admin(altcoin_session)
            return {"is_admin": True, "email": user.get("email", "")}
        except HTTPException:
            return {"is_admin": False}

    @router.get("/api/admin/stats")
    async def api_admin_stats(altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        return auth_db.get_admin_stats()

    @router.get("/api/admin/users")
    async def api_admin_users(search: str = "", offset: int = 0, limit: int = 50, tab: str = "all", altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        return auth_db.get_admin_users(search=search, offset=offset, limit=limit, tab=tab)

    @router.get("/api/admin/orders")
    async def api_admin_orders(search: str = "", offset: int = 0, limit: int = 50, status: str = "all", altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        return auth_db.get_admin_orders(search=search, offset=offset, limit=limit, status=status)

    @router.get("/api/admin/system-errors")
    async def api_admin_system_errors(
        search: str = "",
        offset: int = 0,
        limit: int = 50,
        level: str = "all",
        source: str = "all",
        hours: int = 168,
        altcoin_session: str = Cookie(default=""),
    ):
        require_admin(altcoin_session)
        return list_system_errors(search=search, offset=offset, limit=limit, level=level, source=source, hours=hours)

    @router.get("/api/admin/system-errors/stats")
    async def api_admin_system_error_stats(hours: int = 24, altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        return get_system_error_stats(hours=hours)

    @router.get("/api/admin/system-errors/{log_id}")
    async def api_admin_system_error_detail(log_id: int, altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        item = get_system_error(log_id)
        if not item:
            raise HTTPException(status_code=404, detail="日志不存在")
        return item

    @router.get("/api/admin/chat-logs/overview")
    async def api_admin_chat_logs_overview(hours: int = 24, altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        return chat_assistant_db.get_chat_admin_overview(hours=hours)

    @router.get("/api/admin/chat-logs")
    async def api_admin_chat_logs(
        hours: int = 24,
        intent: str = "all",
        search: str = "",
        offset: int = 0,
        limit: int = 50,
        altcoin_session: str = Cookie(default=""),
    ):
        require_admin(altcoin_session)
        return chat_assistant_db.list_chat_admin_questions(hours=hours, intent=intent, search=search, offset=offset, limit=limit)

    @router.get("/api/runtime-config")
    async def api_runtime_config(kind: str = "all", altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        if kind in ("all", "system"):
            seed_runtime_system_defaults()
        if kind == "strategy":
            return {"items": list_configs("strategy")}
        if kind == "system":
            return {"items": list_configs("system")}
        return {"items": list_configs("strategy") + list_configs("system")}

    @router.get("/api/runtime-config/{kind}/{config_key:path}")
    async def api_runtime_config_detail(kind: str, config_key: str, altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        if kind not in ("strategy", "system"):
            raise HTTPException(status_code=400, detail="kind must be strategy or system")
        return {"kind": kind, "config_key": config_key, "config": get_config(kind, config_key, default={})}

    @router.put("/api/runtime-config/{kind}/{config_key:path}")
    async def api_runtime_config_update(kind: str, config_key: str, payload: RuntimeConfigRequest, altcoin_session: str = Cookie(default="")):
        user = require_admin(altcoin_session)
        if kind not in ("strategy", "system"):
            raise HTTPException(status_code=400, detail="kind must be strategy or system")
        config = set_config(kind, config_key, payload.config, description=payload.description, source="admin_page", updated_by=user.get("email", ""))
        return {"ok": True, "kind": kind, "config_key": config_key, "config": config}

    @router.delete("/api/runtime-config/{kind}/{config_key:path}")
    async def api_runtime_config_delete(kind: str, config_key: str, altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        if kind not in ("strategy", "system"):
            raise HTTPException(status_code=400, detail="kind must be strategy or system")
        return {"ok": delete_config(kind, config_key), "kind": kind, "config_key": config_key}

    @router.get("/api/scheduler/jobs")
    async def api_scheduler_jobs(altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        return get_scheduler_overview()

    @router.post("/api/scheduler/jobs/{job_name}/toggle")
    async def api_scheduler_toggle(job_name: str, payload: SchedulerToggleRequest, altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        if not set_job_enabled(job_name, payload.enabled):
            raise HTTPException(status_code=404, detail="任务不存在")
        return {"ok": True, "job_name": job_name, "enabled": payload.enabled}

    @router.post("/api/scheduler/jobs/{job_name}/interval")
    async def api_scheduler_interval(job_name: str, payload: SchedulerIntervalRequest, altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        if payload.every_seconds < 30:
            raise HTTPException(status_code=400, detail="周期不能低于 30 秒")
        if not set_job_interval(job_name, payload.every_seconds):
            raise HTTPException(status_code=404, detail="任务不存在")
        return {"ok": True, "job_name": job_name, "every_seconds": payload.every_seconds}

    @router.post("/api/scheduler/jobs/{job_name}/trigger")
    async def api_scheduler_trigger(job_name: str, payload: SchedulerTriggerRequest, altcoin_session: str = Cookie(default="")):
        user = require_admin(altcoin_session)
        job = get_job_config(job_name)
        if not job:
            raise HTTPException(status_code=404, detail="任务不存在")
        if not job.get("enabled") and not payload.force:
            raise HTTPException(status_code=409, detail="任务已关闭，需要确认后 force=true 才能单次运行")
        trigger_id = enqueue_manual_trigger(job_name, force=payload.force, requested_by=user.get("email", ""))
        return {"ok": True, "job_name": job_name, "trigger_id": trigger_id, "force": payload.force}

    @router.get("/api/scheduler/triggers")
    async def api_scheduler_triggers(limit: int = 30, altcoin_session: str = Cookie(default="")):
        require_admin(altcoin_session)
        return {"items": list_manual_triggers(limit=limit)}

    return router