package appeal

import (
	"time"
	"api_yal/internal/models"
)

// CreateAppealRequest DTO для создания обращения
type CreateAppealRequest struct {
	Type         string                 `json:"type" validate:"required,oneof=complaint suggestion wish question other"`
	Title        string                 `json:"title" validate:"required,min=3,max=255"`
	Message      string                 `json:"message" validate:"required,min=10"`
	Priority     string                 `json:"priority" validate:"omitempty,oneof=low medium high critical"`
	ObjectID     *uint                  `json:"object_id,omitempty"`
	FeedbackID   *uint                  `json:"feedback_id,omitempty"`
	CommentID    *uint                  `json:"comment_id,omitempty"`
	ContactName  string                 `json:"contact_name,omitempty"`
	ContactEmail string                 `json:"contact_email,omitempty" validate:"omitempty,email"`
	ContactPhone string                 `json:"contact_phone,omitempty"`
	Attachments  []string               `json:"attachments,omitempty"`
	Category     string                 `json:"category,omitempty"`
	Labels       []string               `json:"labels,omitempty"`
	CustomData   map[string]interface{} `json:"custom_data,omitempty"`
	IPAddress    string                 `json:"ip_address,omitempty"`
	UserAgent    string                 `json:"user_agent,omitempty"`
}

// UpdateAppealRequest DTO для обновления обращения
type UpdateAppealRequest struct {
	Title       *string                `json:"title,omitempty" validate:"omitempty,min=3,max=255"`
	Message     *string                `json:"message,omitempty" validate:"omitempty,min=10"`
	Priority    *string                `json:"priority,omitempty" validate:"omitempty,oneof=low medium high critical"`
	Category    *string                `json:"category,omitempty"`
	Labels      []string               `json:"labels,omitempty"`
	Attachments []string               `json:"attachments,omitempty"`
	CustomData  map[string]interface{} `json:"custom_data,omitempty"`
}

// UpdateStatusRequest DTO для обновления статуса
type UpdateStatusRequest struct {
	Status  string `json:"status" validate:"required,oneof=new in_progress resolved rejected closed"`
	Comment string `json:"comment,omitempty"`
}

// AssignRequest DTO для назначения ответственного
type AssignRequest struct {
	AssignedToID *uint `json:"assigned_to_id"`
}

// ResolveRequest DTO для решения обращения
type ResolveRequest struct {
	Resolution string `json:"resolution" validate:"required,min=5"`
}

// AppealResponse DTO для ответа
type AppealResponse struct {
	ID           uint                       `json:"id"`
	Type         string                     `json:"type"`
	Status       string                     `json:"status"`
	Priority     string                     `json:"priority"`
	Title        string                     `json:"title"`
	Message      string                     `json:"message"`
	AuthorID     *uint                      `json:"author_id,omitempty"`
	Author       *AuthorInfo                `json:"author,omitempty"`
	ObjectID     *uint                      `json:"object_id,omitempty"`
	Object       *ObjectInfo                `json:"object,omitempty"`
	FeedbackID   *uint                      `json:"feedback_id,omitempty"`
	CommentID    *uint                      `json:"comment_id,omitempty"`
	ContactName  string                     `json:"contact_name,omitempty"`
	ContactEmail string                     `json:"contact_email,omitempty"`
	ContactPhone string                     `json:"contact_phone,omitempty"`
	Attachments  []string                   `json:"attachments,omitempty"`
	Category     string                     `json:"category,omitempty"`
	Labels       []string                   `json:"labels,omitempty"`
	AssignedToID *uint                      `json:"assigned_to_id,omitempty"`
	AssignedTo   *AuthorInfo                `json:"assigned_to,omitempty"`
	ResolvedAt   *time.Time                 `json:"resolved_at,omitempty"`
	ResolvedBy   *uint                      `json:"resolved_by,omitempty"`
	Resolution   string                     `json:"resolution,omitempty"`
	CustomData   map[string]interface{}     `json:"custom_data,omitempty"`
	CreatedAt    time.Time                  `json:"created_at"`
	UpdatedAt    time.Time                  `json:"updated_at"`
}

// AuthorInfo информация об авторе
type AuthorInfo struct {
	ID        uint   `json:"id"`
	Email     string `json:"email"`
	FirstName string `json:"first_name"`
	LastName  string `json:"last_name"`
}

// ObjectInfo информация об объекте
type ObjectInfo struct {
	ID          uint   `json:"id"`
	Name        string `json:"name"`
	Description string `json:"description"`
}

// ListAppealsResponse DTO для списка обращений
type ListAppealsResponse struct {
	Data       []AppealResponse `json:"data"`
	Total      int64            `json:"total"`
	Offset     int              `json:"offset"`
	Limit      int              `json:"limit"`
	TotalPages int              `json:"total_pages"`
}

// AppealHistoryResponse DTO для истории
type AppealHistoryResponse struct {
	ID        uint        `json:"id"`
	AppealID  uint        `json:"appeal_id"`
	UserID    *uint       `json:"user_id,omitempty"`
	User      *AuthorInfo `json:"user,omitempty"`
	OldStatus string      `json:"old_status"`
	NewStatus string      `json:"new_status"`
	Comment   string      `json:"comment,omitempty"`
	CreatedAt time.Time   `json:"created_at"`
}

// ListHistoryResponse DTO для списка истории
type ListHistoryResponse struct {
	Data       []AppealHistoryResponse `json:"data"`
	Total      int64                   `json:"total"`
	Offset     int                     `json:"offset"`
	Limit      int                     `json:"limit"`
	TotalPages int                     `json:"total_pages"`
}

// AppealStatisticsResponse DTO для статистики
type AppealStatisticsResponse struct {
	Total       int64            `json:"total"`
	ByStatus    map[string]int64 `json:"by_status"`
	ByType      map[string]int64 `json:"by_type"`
	ByPriority  map[string]int64 `json:"by_priority"`
	ByCategory  map[string]int64 `json:"by_category,omitempty"`
	AvgResolveTime float64        `json:"avg_resolve_time_hours"`
}

// NewAppealResponse создает AppealResponse из модели
func NewAppealResponse(appeal *models.Appeal) AppealResponse {
	resp := AppealResponse{
		ID:           appeal.ID,
		Type:         string(appeal.Type),
		Status:       string(appeal.Status),
		Priority:     string(appeal.Priority),
		Title:        appeal.Title,
		Message:      appeal.Message,
		AuthorID:     appeal.AuthorID,
		ObjectID:     appeal.ObjectID,
		FeedbackID:   appeal.FeedbackID,
		CommentID:    appeal.CommentID,
		ContactName:  appeal.ContactName,
		ContactEmail: appeal.ContactEmail,
		ContactPhone: appeal.ContactPhone,
		Attachments:  appeal.Attachments,
		Category:     appeal.Category,
		Labels:       appeal.Labels,
		AssignedToID: appeal.AssignedToID,
		ResolvedAt:   appeal.ResolvedAt,
		ResolvedBy:   appeal.ResolvedBy,
		Resolution:   appeal.Resolution,
		CustomData:   appeal.CustomData,
		CreatedAt:    appeal.CreatedAt,
		UpdatedAt:    appeal.UpdatedAt,
	}

	if appeal.Author != nil {
		resp.Author = &AuthorInfo{
			ID:        appeal.Author.ID,
			Email:     appeal.Author.Email,
			FirstName: appeal.Author.FirstName,
			LastName:  appeal.Author.LastName,
		}
	}

	if appeal.Object != nil {
		resp.Object = &ObjectInfo{
			ID:          appeal.Object.ID,
			Name:        appeal.Object.ShortName,
			Description: appeal.Object.Description,
		}
	}

	if appeal.AssignedTo != nil {
		resp.AssignedTo = &AuthorInfo{
			ID:        appeal.AssignedTo.ID,
			Email:     appeal.AssignedTo.Email,
			FirstName: appeal.AssignedTo.FirstName,
			LastName:  appeal.AssignedTo.LastName,
		}
	}

	return resp
}

// NewAppealHistoryResponse создает AppealHistoryResponse из модели
func NewAppealHistoryResponse(history *models.AppealHistory) AppealHistoryResponse {
	resp := AppealHistoryResponse{
		ID:        history.ID,
		AppealID:  history.AppealID,
		UserID:    history.UserID,
		OldStatus: string(history.OldStatus),
		NewStatus: string(history.NewStatus),
		Comment:   history.Comment,
		CreatedAt: history.CreatedAt,
	}

	if history.User != nil {
		resp.User = &AuthorInfo{
			ID:        history.User.ID,
			Email:     history.User.Email,
			FirstName: history.User.FirstName,
			LastName:  history.User.LastName,
		}
	}

	return resp
}