package handler

import (
	"context"
	"encoding/json"
	"strconv"
	"time"

	"github.com/gofiber/fiber/v2"
	"gorm.io/gorm"

	"gitee.ltd/lxh/wechat-robot/internal/docker"
	"gitee.ltd/lxh/wechat-robot/internal/model"
)

// ListContacts 列出机器人的联系人
func ListContacts(c *fiber.Ctx) error {
	robotID, err := strconv.Atoi(c.Params("id"))
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "无效的机器人ID")
	}

	var robot model.Robot
	db := model.GetDB()

	if err := db.First(&robot, robotID).Error; err != nil {
		if err == gorm.ErrRecordNotFound {
			return fiber.NewError(fiber.StatusNotFound, "机器人不存在")
		}
		return fiber.NewError(fiber.StatusInternalServerError, "查询数据库失败")
	}

	// 获取联系人列表
	var contacts []model.Contact
	if err := db.Where("robot_id = ?", robotID).Find(&contacts).Error; err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, "获取联系人列表失败")
	}

	// 如果机器人在线并且没有联系人，则从机器人获取最新联系人
	if robot.Status == model.RobotStatusOnline && len(contacts) == 0 {
		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
		defer cancel()

		// 调用Docker API获取联系人，传递容器访问地址
		contactsData, err := docker.GetWechatContacts(ctx, robot.ContainerID, robot.ContainerHost)
		if err != nil {
			return fiber.NewError(fiber.StatusInternalServerError, "从机器人获取联系人失败: "+err.Error())
		}

		// 解析联系人数据
		var response docker.APIResponse
		if err := json.Unmarshal([]byte(contactsData), &response); err != nil {
			return fiber.NewError(fiber.StatusInternalServerError, "解析联系人数据失败: "+err.Error())
		}

		// 保存联系人到数据库
		if response.Success {
			contactList, ok := response.Data.([]interface{})
			if ok {
				for _, c := range contactList {
					contactMap, ok := c.(map[string]interface{})
					if !ok {
						continue
					}

					contact := model.Contact{
						RobotID:  uint(robotID),
						WechatID: contactMap["id"].(string),
						Nickname: contactMap["name"].(string),
						Avatar:   contactMap["avatar"].(string),
						Type:     model.ContactTypeFriend,
					}

					if contactMap["type"].(string) == "group" {
						contact.Type = model.ContactTypeGroup
					}

					db.Create(&contact)
					contacts = append(contacts, contact)
				}
			}
		}
	}

	return c.Render("contact/index", fiber.Map{
		"Title":    "联系人列表",
		"Robot":    robot,
		"Contacts": contacts,
	})
}

// ShowContact 显示联系人详情与聊天记录
func ShowContact(c *fiber.Ctx) error {
	robotID, err := strconv.Atoi(c.Params("id"))
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "无效的机器人ID")
	}

	contactID, err := strconv.Atoi(c.Params("contactId"))
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "无效的联系人ID")
	}

	db := model.GetDB()

	// 获取机器人信息
	var robot model.Robot
	if err := db.First(&robot, robotID).Error; err != nil {
		if err == gorm.ErrRecordNotFound {
			return fiber.NewError(fiber.StatusNotFound, "机器人不存在")
		}
		return fiber.NewError(fiber.StatusInternalServerError, "查询机器人失败")
	}

	// 获取联系人信息
	var contact model.Contact
	if err := db.First(&contact, contactID).Error; err != nil {
		if err == gorm.ErrRecordNotFound {
			return fiber.NewError(fiber.StatusNotFound, "联系人不存在")
		}
		return fiber.NewError(fiber.StatusInternalServerError, "查询联系人失败")
	}

	// 获取聊天记录
	var messages []model.Message
	if err := db.Where("robot_id = ? AND contact_id = ?", robotID, contactID).
		Order("send_time DESC").Limit(50).Find(&messages).Error; err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, "获取聊天记录失败")
	}

	return c.Render("contact/show", fiber.Map{
		"Title":    contact.Nickname,
		"Robot":    robot,
		"Contact":  contact,
		"Messages": messages,
	})
}

// ListGroupMembers 列出群成员
func ListGroupMembers(c *fiber.Ctx) error {
	robotID, err := strconv.Atoi(c.Params("id"))
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "无效的机器人ID")
	}

	contactID, err := strconv.Atoi(c.Params("contactId"))
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "无效的联系人ID")
	}

	db := model.GetDB()

	// 获取机器人信息
	var robot model.Robot
	if err := db.First(&robot, robotID).Error; err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, "查询机器人失败")
	}

	// 获取联系人信息（群）
	var contact model.Contact
	if err := db.First(&contact, contactID).Error; err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, "查询群信息失败")
	}

	// 确保联系人是群组
	if contact.Type != model.ContactTypeGroup {
		return fiber.NewError(fiber.StatusBadRequest, "指定的联系人不是群组")
	}

	// 获取群成员
	var members []model.GroupMember
	if err := db.Where("group_id = ?", contactID).Find(&members).Error; err != nil {
		return fiber.NewError(fiber.StatusInternalServerError, "获取群成员失败")
	}

	// 如果机器人在线并且没有群成员，则从机器人获取
	if robot.Status == model.RobotStatusOnline && len(members) == 0 {
		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
		defer cancel()

		// 调用Docker API获取群成员，传递容器访问地址
		membersData, err := docker.GetWechatGroupMembers(ctx, robot.ContainerID, contact.WechatID, robot.ContainerHost)
		if err != nil {
			return fiber.NewError(fiber.StatusInternalServerError, "从机器人获取群成员失败: "+err.Error())
		}

		// 解析群成员数据
		var response docker.APIResponse
		if err := json.Unmarshal([]byte(membersData), &response); err != nil {
			return fiber.NewError(fiber.StatusInternalServerError, "解析群成员数据失败: "+err.Error())
		}

		// 保存群成员到数据库
		if response.Success {
			memberList, ok := response.Data.([]interface{})
			if ok {
				for _, m := range memberList {
					memberMap, ok := m.(map[string]interface{})
					if !ok {
						continue
					}

					role := model.MemberRoleMember
					if memberMap["role"].(string) == "owner" {
						role = model.MemberRoleOwner
					} else if memberMap["role"].(string) == "admin" {
						role = model.MemberRoleAdmin
					}

					member := model.GroupMember{
						GroupID:  contact.ID,
						WechatID: memberMap["id"].(string),
						Nickname: memberMap["name"].(string),
						Avatar:   memberMap["avatar"].(string),
						Role:     role,
					}

					db.Create(&member)
					members = append(members, member)
				}
			}
		}
	}

	return c.Render("contact/members", fiber.Map{
		"Title":   contact.Nickname + " 群成员",
		"Robot":   robot,
		"Contact": contact,
		"Members": members,
	})
}