# -*- coding: utf-8 -*-
import json
from odoo import http
from odoo.http import request, Response


def _json(data):
    """返回 UTF-8 JSON 响应（与 game_base 一致）。"""
    return Response(
        json.dumps(data, ensure_ascii=False),
        content_type='application/json; charset=utf-8',
    )


def _post_body():
    try:
        raw = request.httprequest.get_data(as_text=True) or '{}'
        return json.loads(raw)
    except Exception:
        return {}


class YtWorldApi(http.Controller):
    """前端沙盘记忆接口（JSON over HTTP）。auth=user：需已登录 Odoo。
    前端统一带 ?db=game 且 credentials:'same-origin'，故路由须为 type='http'
    并以 _json 返回原始 JSON（与 game-api.js 的 fetch().json() 对齐）。"""

    @http.route('/yt_world/api/world', type='http', auth='user',
                methods=['GET', 'OPTIONS'], csrf=False)
    def world(self, **kw):
        """取或建当前用户世界，导出 seed + 地块覆盖。"""
        user = request.env.user
        rec = request.env['yt.world'].sudo().get_or_create_for_user(user)
        return _json(rec.export_state())

    @http.route('/yt_world/api/tiles/save', type='http', auth='user',
                methods=['POST', 'OPTIONS'], csrf=False)
    def save_tiles(self, **kw):
        """增量覆盖保存地块。body: {"tiles": [...]}"""
        user = request.env.user
        world = request.env['yt.world'].sudo().search(
            [('user_id', '=', user.id)], limit=1)
        if not world:
            return _json({'ok': False, 'error': 'no_world'})
        body = _post_body()
        tiles = body.get('tiles') or []
        world.import_tiles(tiles)
        return _json({'ok': True, 'saved': len(tiles)})

    @http.route('/yt_world/api/settings', type='http', auth='user',
                methods=['POST', 'OPTIONS'], csrf=False)
    def save_settings(self, **kw):
        """保存相机/UI 偏好。body: {"settings": {...}}"""
        user = request.env.user
        world = request.env['yt.world'].sudo().search(
            [('user_id', '=', user.id)], limit=1)
        body = _post_body()
        settings = body.get('settings')
        if world and settings is not None:
            world.settings = settings
        return _json({'ok': True})