"""
后台导航管理视图（通过插件方式开发）

URL 前缀变更：
- 原蓝图 url_prefix='/nav'（注册到 system_bp → /system/nav/...）
- 改为 url_prefix='/system/nav' 直接挂到 app，这样去掉了对 framework 内 system_bp 的依赖
- 与用户原始菜单路径 /system/nav 完全兼容，权限码 system:nav:* 保持不变
"""
import os

from flask import Blueprint, render_template, request
from flask_login import current_user

from applications.common import curd
from applications.common.utils.http import table_api, fail_api, success_api
from applications.common.utils.rights import authorize
from applications.common.utils.validate import str_escape
from applications.extensions import db
from applications.extensions.init_limit import limiter
from applications.models import Nav
from applications.schemas import NavManageSchema

# 插件级 Blueprint：直接挂到 app，前缀 /system/nav，独立模板目录
dir_path = os.path.dirname(os.path.abspath(__file__))
bp = Blueprint(
    'nav', __name__,
    url_prefix='/system/nav',
    template_folder=os.path.join(dir_path, '..', 'templates'),
)


@bp.get('/')
@authorize("system:nav:main")
def main():
    return render_template('system/nav/main.html')


@bp.get('/data')
@limiter.limit("60 per minute")
@authorize("system:nav:main")
def data():
    keyword = str_escape(request.args.get('keyword', type=str))
    category = str_escape(request.args.get('category', type=str))

    query = Nav.query.filter()
    if keyword:
        query = query.filter(
            db.or_(
                Nav.title.contains(keyword),
                Nav.url.contains(keyword),
                Nav.description.contains(keyword),
            )
        )
    if category:
        query = query.filter(Nav.category == category)

    items = query.order_by(Nav.category.asc(), Nav.sort.asc(), Nav.id.asc()).layui_paginate()
    return table_api(
        msg="请求成功",
        data=curd.model_to_dicts(schema=NavManageSchema, data=items.items),
        count=items.total,
    )


@bp.get('/add')
@authorize("system:nav:add", log=True)
def add():
    return render_template('system/nav/add.html')


@bp.post('/save')
@authorize("system:nav:add", log=True)
def save():
    req_json = request.get_json(force=True, silent=True) or {}
    category = str_escape(req_json.get('category'))
    title = str_escape(req_json.get('title'))
    url = str_escape(req_json.get('url'))
    icon = str_escape(req_json.get('icon')) or 'layui-icon-link'

    if not all([category, title, url]):
        return fail_api(msg="分类/标题/链接不得为空")

    try:
        nav = Nav(
            category=category,
            title=title,
            url=url,
            description=str_escape(req_json.get('description')),
            icon=icon,
            sort=int(req_json.get('sort') or 0),
            enable=int(req_json.get('enable') or 1),
            is_external=int(req_json.get('isExternal') or 1),
            create_by=current_user.username if current_user.is_authenticated else 'admin',
        )
        db.session.add(nav)
        db.session.commit()
    except Exception as e:
        db.session.rollback()
        return fail_api(msg=f"新增失败：{e}")
    return success_api(msg="新增成功")


@bp.get('/edit')
@authorize("system:nav:edit", log=True)
def edit():
    nav_id = request.args.get('navId', type=int)
    nav = curd.get_one_by_id(Nav, nav_id)
    if not nav:
        return fail_api(msg="导航不存在")
    return render_template('system/nav/edit.html', nav=nav)


@bp.put('/update')
@authorize("system:nav:edit", log=True)
def update():
    req_json = request.get_json(force=True, silent=True) or {}
    nav_id = req_json.get('navId')
    nav = curd.get_one_by_id(Nav, nav_id)
    if not nav:
        return fail_api(msg="导航不存在")

    category = str_escape(req_json.get('category'))
    title = str_escape(req_json.get('title'))
    url = str_escape(req_json.get('url'))
    if not all([category, title, url]):
        return fail_api(msg="分类/标题/链接不得为空")

    try:
        nav.category = category
        nav.title = title
        nav.url = url
        nav.description = str_escape(req_json.get('description'))
        nav.icon = str_escape(req_json.get('icon')) or 'layui-icon-link'
        nav.sort = int(req_json.get('sort') or 0)
        nav.enable = int(req_json.get('enable') or 1)
        nav.is_external = int(req_json.get('isExternal') or 1)
        db.session.commit()
    except Exception as e:
        db.session.rollback()
        return fail_api(msg=f"更新失败：{e}")
    return success_api(msg="更新成功")


@bp.delete('/remove/<int:nav_id>')
@authorize("system:nav:remove", log=True)
def remove(nav_id):
    res = curd.delete_one_by_id(Nav, nav_id)
    if not res:
        return fail_api(msg="删除失败")
    return success_api(msg="删除成功")


@bp.put('/enable')
@authorize("system:nav:edit", log=True)
def enable():
    req_json = request.get_json(force=True, silent=True) or {}
    nav_id = req_json.get('navId')
    if not nav_id:
        return fail_api(msg="数据错误")
    res = curd.enable_status(Nav, nav_id)
    if not res:
        return fail_api(msg="操作失败")
    return success_api(msg="已启用")


@bp.put('/disable')
@authorize("system:nav:edit", log=True)
def dis_enable():
    req_json = request.get_json(force=True, silent=True) or {}
    nav_id = req_json.get('navId')
    if not nav_id:
        return fail_api(msg="数据错误")
    res = curd.disable_status(Nav, nav_id)
    if not res:
        return fail_api(msg="操作失败")
    return success_api(msg="已禁用")