import threading

from flask import Blueprint, flash, redirect, render_template, request, url_for, current_app
from flask_login import current_user, login_required

from app.extensions import db, scheduler
from app.forms import ApiConfigForm
from app.models import ApiConfig
from app.services.api_executor import execute_api_by_id
from app.services.scheduler import SchedulerService

apis_bp = Blueprint("apis", __name__, url_prefix="/apis")


def _scheduler_service() -> SchedulerService:
    return SchedulerService(scheduler)


@apis_bp.route("", methods=["GET"])
@login_required
def list_apis():
    name = request.args.get("name")
    enabled = request.args.get("enabled")
    query = ApiConfig.query
    if name:
        query = query.filter(ApiConfig.name.ilike(f"%{name}%"))
    if enabled in {"0", "1"}:
        query = query.filter(ApiConfig.enabled == (enabled == "1"))
    apis = query.order_by(ApiConfig.updated_at.desc()).all()
    return render_template("apis/list.html", apis=apis)


@apis_bp.route("/new", methods=["GET", "POST"])
@login_required
def create_api():
    form = ApiConfigForm()
    if form.validate_on_submit():
        api = ApiConfig(
            name=form.name.data,
            description=form.description.data,
            url=form.url.data,
            http_method=form.http_method.data,
            headers=form.headers.data,
            query_params=form.query_params.data,
            body=form.body.data,
            schedule_type=form.schedule_type.data,
            schedule_expression=form.schedule_expression.data,
            timeout_seconds=form.timeout_seconds.data,
            retry_times=form.retry_times.data,
            retry_interval_seconds=form.retry_interval_seconds.data,
            enabled=form.enabled.data,
            created_by=current_user.id,
        )
        db.session.add(api)
        db.session.commit()
        if api.enabled:
            _scheduler_service().add_job_for_api(api)
        flash("API 配置已创建", "success")
        return redirect(url_for("apis.list_apis"))
    return render_template("apis/form.html", form=form, api=None)


@apis_bp.route("/<int:api_id>/edit", methods=["GET", "POST"])
@login_required
def edit_api(api_id: int):
    api = ApiConfig.query.get_or_404(api_id)
    form = ApiConfigForm(obj=api)
    if form.validate_on_submit():
        form.populate_obj(api)
        db.session.commit()
        if api.enabled:
            _scheduler_service().reschedule_job_for_api(api)
        else:
            _scheduler_service().remove_job_for_api(api.id)
        flash("API 配置已更新", "success")
        return redirect(url_for("apis.list_apis"))
    return render_template("apis/form.html", form=form, api=api)


@apis_bp.route("/<int:api_id>/toggle", methods=["POST"])
@login_required
def toggle_api(api_id: int):
    api = ApiConfig.query.get_or_404(api_id)
    api.enabled = not api.enabled
    db.session.commit()
    svc = _scheduler_service()
    if api.enabled:
        svc.add_job_for_api(api)
        flash("API 已启用并加入调度", "success")
    else:
        svc.remove_job_for_api(api.id)
        flash("API 已停用并移除调度", "info")
    return redirect(url_for("apis.list_apis"))


@apis_bp.route("/<int:api_id>/delete", methods=["POST"])
@login_required
def delete_api(api_id: int):
    api = ApiConfig.query.get_or_404(api_id)
    db.session.delete(api)
    db.session.commit()
    _scheduler_service().remove_job_for_api(api_id)
    flash("API 配置已删除", "info")
    return redirect(url_for("apis.list_apis"))


@apis_bp.route("/<int:api_id>/copy", methods=["POST"])
@login_required
def copy_api(api_id: int):
    src = ApiConfig.query.get_or_404(api_id)
    new_api = ApiConfig(
        name=f"{src.name}-副本",
        description=src.description,
        url=src.url,
        http_method=src.http_method,
        headers=src.headers,
        query_params=src.query_params,
        body=src.body,
        schedule_type=src.schedule_type,
        schedule_expression=src.schedule_expression,
        timeout_seconds=src.timeout_seconds,
        retry_times=src.retry_times,
        retry_interval_seconds=src.retry_interval_seconds,
        enabled=False,  # 复制后默认不启用，避免未确认即自动调度
        created_by=current_user.id,
    )
    db.session.add(new_api)
    db.session.commit()
    flash("已复制为新配置，请查看并启用。", "success")
    return redirect(url_for("apis.edit_api", api_id=new_api.id))


@apis_bp.route("/<int:api_id>/run", methods=["POST"])
@login_required
def run_now(api_id: int):
    api = ApiConfig.query.get_or_404(api_id)

    app_obj = current_app._get_current_object()
    threading.Thread(target=execute_api_by_id, args=(api.id, app_obj), daemon=True).start()
    flash("已触发立即执行，稍后在日志中查看结果。", "success")
    return redirect(url_for("apis.list_apis"))