# -*- coding: utf-8 -*-
import json

from odoo import http
from odoo.http import request
from odoo.tools import format_datetime


class AiChatController(http.Controller):
    """AI 聊天 API"""

    def _check_ai_access(self):
        """检查用户是否有 AI Agent 使用权限"""
        if not request.env.user.has_group('yuthon_ai_agent.group_ai_agent_user'):
            return {'error': '您没有使用 AI 助手的权限，请联系管理员开通。'}
        return None

    @http.route('/ai/chat/send', type='json', auth='user', methods=['POST'], csrf=False)
    def chat_send(self, conversation_id, message):
        """发送消息"""
        err = self._check_ai_access()
        if err:
            return err
        conv = request.env['ai.conversation'].browse(conversation_id)
        if not conv.exists():
            return {'error': '对话不存在'}
        reply = conv.send_message(message)
        if isinstance(reply, dict) and 'error' in reply:
            return reply
        last_msg = conv.message_ids.filtered(lambda m: m.role == 'assistant')[-1:]
        return {
            'content': reply,
            'message_id': last_msg.id if last_msg else False,
        }

    @http.route('/ai/chat/history', type='json', auth='user')
    def chat_history(self, conversation_id):
        """获取对话历史"""
        conv = request.env['ai.conversation'].browse(conversation_id)
        if not conv.exists():
            return {'error': '对话不存在'}
        user_tz = request.env.user.tz or 'Asia/Shanghai'
        from pytz import timezone, utc
        local_tz = timezone(user_tz)

        messages = []
        for msg in conv.message_ids:
            if msg.create_date:
                utc_dt = msg.create_date.replace(tzinfo=utc)
                local_dt = utc_dt.astimezone(local_tz)
                time_str = local_dt.strftime('%H:%M')
            else:
                time_str = ''
            messages.append({
                'id': msg.id,
                'role': msg.role,
                'content': msg.content,
                'date': time_str,
            })
        return {'messages': messages}

    @http.route('/ai/chat/clear', type='json', auth='user', methods=['POST'], csrf=False)
    def chat_clear(self, conversation_id):
        """清空对话"""
        conv = request.env['ai.conversation'].browse(conversation_id)
        if not conv.exists():
            return {'error': '对话不存在'}
        conv.message_ids.unlink()
        return {'success': True}

    @http.route('/ai/conversation/create', type='json', auth='user', methods=['POST'], csrf=False)
    def conversation_create(self):
        """创建新对话并返回ID"""
        provider = request.env['ai.provider'].search([('active', '=', True)], limit=1)
        if not provider:
            return {'error': '请先在服务商配置中设置 AI 服务'}
        conv = request.env['ai.conversation'].create({
            'name': '新对话',
            'provider_id': provider.id,
        })
        return {'id': conv.id}

    @http.route('/ai/conversation/get_or_create_personal', type='json', auth='user')
    def get_or_create_personal(self):
        """获取或创建当前用户的个人对话（浮动聊天用）"""
        err = self._check_ai_access()
        if err:
            return err
        conv = request.env['ai.conversation'].search([
            ('create_uid', '=', request.env.uid),
        ], limit=1, order='create_date desc')

        if not conv:
            provider = request.env['ai.provider'].search([('active', '=', True)], limit=1)
            if not provider:
                return {'error': '请先在服务商配置中设置 AI 服务'}
            conv = request.env['ai.conversation'].create({
                'name': '个人对话',
                'provider_id': provider.id,
            })
        return {'id': conv.id, 'name': conv.name}

    @http.route('/ai/conversation/list', type='json', auth='user')
    def conversation_list(self):
        """获取当前用户的所有对话列表"""
        err = self._check_ai_access()
        if err:
            return err
        convs = request.env['ai.conversation'].search([
            ('create_uid', '=', request.env.uid),
        ], order='create_date desc', limit=50)
        return {
            'conversations': [{
                'id': c.id,
                'name': c.name,
                'message_count': c.message_count,
            } for c in convs]
        }

    @http.route('/ai/conversation/new', type='json', auth='user', methods=['POST'], csrf=False)
    def conversation_new(self):
        """新建对话"""
        err = self._check_ai_access()
        if err:
            return err
        provider = request.env['ai.provider'].search([('active', '=', True)], limit=1)
        if not provider:
            return {'error': '请先在服务商配置中设置 AI 服务'}
        conv = request.env['ai.conversation'].create({
            'name': '新对话',
            'provider_id': provider.id,
        })
        return {'id': conv.id, 'name': conv.name}

    @http.route('/ai/conversation/delete', type='json', auth='user', methods=['POST'], csrf=False)
    def conversation_delete(self, conversation_id):
        """删除对话"""
        err = self._check_ai_access()
        if err:
            return err
        conv = request.env['ai.conversation'].browse(conversation_id)
        if not conv.exists():
            return {'error': '对话不存在'}
        if conv.create_uid.id != request.env.uid:
            return {'error': '只能删除自己的对话'}
        conv.unlink()
        return {'success': True}

    @http.route('/ai/profile/get', type='json', auth='user')
    def get_profile(self):
        """获取当前用户的 AI 画像（含记忆摘要）"""
        err = self._check_ai_access()
        if err:
            return err
        profile = request.env['ai.user.profile'].get_or_create()
        return {
            'id': profile.id,
            'nickname': profile.nickname or '',
            'role': profile.role or '',
            'department': profile.department or '',
            'style_preference': profile.style_preference or 'concise',
            'memory_count': profile.memory_count,
        }