package logic

import (
	"fmt"
	"strconv"
	"strings"
	"time"

	adminentity "spark-server/internal/module/admin/entity"
	adminmodel "spark-server/internal/module/admin/model"
	groupentity "spark-server/internal/module/group/entity"
	msgentity "spark-server/internal/module/message/entity"
	userentity "spark-server/internal/module/user/entity"
)

func messageView(r adminmodel.MessageRow) adminentity.ImMessageView {
	return adminentity.ImMessageView{
		ID:          strconv.FormatInt(r.ID, 10),
		ClientMsgID: r.ClientMsgID,
		From:        r.SenderID,
		To:          r.ReceiverID,
		GroupID:     r.GroupID,
		ChatType:    r.ChatType,
		Type:        msgTypeName(msgentity.Type(r.MessageType)),
		Text:        previewText(r.Content, msgentity.Type(r.MessageType)),
		Revoked:     r.Status == int(msgentity.StatusRecalled),
		Ts:          r.CreatedAt.UnixMilli(),
	}
}

func messageMatch(v adminentity.ImMessageView, q string) bool {
	ql := strings.ToLower(q)
	if strings.Contains(strings.ToLower(v.Text), ql) {
		return true
	}
	if strings.Contains(strings.ToLower(v.ID), ql) {
		return true
	}
	if strings.Contains(strings.ToLower(v.Type), ql) {
		return true
	}
	if strings.Contains(strconv.FormatInt(v.From, 10), q) {
		return true
	}
	if v.To > 0 && strings.Contains(strconv.FormatInt(v.To, 10), q) {
		return true
	}
	if v.GroupID > 0 && strings.Contains(strconv.FormatInt(v.GroupID, 10), q) {
		return true
	}
	return false
}

func msgTypeName(t msgentity.Type) string {
	switch t {
	case msgentity.TypeText:
		return "text"
	case msgentity.TypeImage:
		return "image"
	case msgentity.TypeVoice:
		return "voice"
	case msgentity.TypeVideo:
		return "video"
	case msgentity.TypeEmoji:
		return "emoji"
	case msgentity.TypeGIF:
		return "gif"
	case msgentity.TypeFile:
		return "file"
	case msgentity.TypeLocation:
		return "location"
	case msgentity.TypeSystem:
		return "system"
	default:
		return fmt.Sprintf("type_%d", t)
	}
}

func previewText(raw []byte, t msgentity.Type) string {
	c, err := msgentity.UnmarshalContent(raw)
	if err != nil || c == nil {
		return ""
	}
	switch t {
	case msgentity.TypeText:
		if c.Text != nil {
			return c.Text.Body
		}
	case msgentity.TypeImage:
		return "[图片]"
	case msgentity.TypeVoice:
		return "[语音]"
	case msgentity.TypeVideo:
		return "[视频]"
	case msgentity.TypeEmoji:
		return "[表情]"
	case msgentity.TypeGIF:
		return "[GIF]"
	case msgentity.TypeFile:
		if c.File != nil && c.File.Name != "" {
			return "[文件] " + c.File.Name
		}
		return "[文件]"
	case msgentity.TypeLocation:
		if c.Location != nil && c.Location.Name != "" {
			return "[位置] " + c.Location.Name
		}
		return "[位置]"
	case msgentity.TypeSystem:
		if c.System != nil {
			if c.System.Body != "" {
				return c.System.Body
			}
			return c.System.Kind
		}
	}
	return ""
}

func userView(r adminmodel.UserRow) adminentity.UserView {
	v := adminentity.UserView{
		ID: r.ID, Email: r.Email, Nickname: r.Nickname, SparkID: r.SparkID,
		AvatarURL: r.Avatar, Channel: r.Platform, Status: r.Status,
		Banned: r.Status == int(userentity.StatusDisabled),
		CreatedAt: r.CreatedAt.Format(time.RFC3339),
	}
	if r.DeviceID > 0 {
		v.DeviceID = strconv.FormatUint(r.DeviceID, 10)
	}
	if r.LastActiveAt != nil {
		v.LastActiveAt = r.LastActiveAt.Format(time.RFC3339)
	}
	return v
}

func groupSummary(r adminmodel.GroupRow) adminentity.GroupView {
	return adminentity.GroupView{
		GroupID:     strconv.FormatInt(r.ID, 10),
		Name:        r.Name,
		Avatar:      r.Avatar,
		OwnerID:     r.OwnerID,
		MuteAll:     r.MutedAll != 0,
		MemberCount: r.MemberCount,
		Active:      r.Status == int(groupentity.StatusActive),
		UpdatedAt:   r.UpdatedAt.Format(time.RFC3339),
		CreatedAt:   r.CreatedAt.Format(time.RFC3339),
	}
}

func roleName(role int) string {
	switch groupentity.Role(role) {
	case groupentity.RoleOwner:
		return "owner"
	case groupentity.RoleAdmin:
		return "admin"
	default:
		return "member"
	}
}