package responses

import (
	"time"

	"github.com/treytartt/casera-api/internal/models"
)

// ContractorSpecialtyResponse represents a contractor specialty
type ContractorSpecialtyResponse struct {
	ID           uint   `json:"id"`
	Name         string `json:"name"`
	Description  string `json:"description"`
	Icon         string `json:"icon"`
	DisplayOrder int    `json:"display_order"`
}

// ContractorUserResponse represents a user in contractor context
type ContractorUserResponse struct {
	ID        uint   `json:"id"`
	Username  string `json:"username"`
	FirstName string `json:"first_name"`
	LastName  string `json:"last_name"`
}

// ContractorResponse represents a contractor in the API response
type ContractorResponse struct {
	ID            uint                          `json:"id"`
	ResidenceID   *uint                         `json:"residence_id"`
	CreatedByID   uint                          `json:"created_by_id"`
	AddedBy       uint                          `json:"added_by"` // Alias for created_by_id (KMM compatibility)
	CreatedBy     *ContractorUserResponse       `json:"created_by,omitempty"`
	Name          string                        `json:"name"`
	Company       string                        `json:"company"`
	Phone         string                        `json:"phone"`
	Email         string                        `json:"email"`
	Website       string                        `json:"website"`
	Notes         string                        `json:"notes"`
	StreetAddress string                        `json:"street_address"`
	City          string                        `json:"city"`
	StateProvince string                        `json:"state_province"`
	PostalCode    string                        `json:"postal_code"`
	Specialties   []ContractorSpecialtyResponse `json:"specialties"`
	Rating        *float64                      `json:"rating"`
	IsFavorite    bool                          `json:"is_favorite"`
	IsActive      bool                          `json:"is_active"`
	TaskCount     int                           `json:"task_count,omitempty"`
	CreatedAt     time.Time                     `json:"created_at"`
	UpdatedAt     time.Time                     `json:"updated_at"`
}

// Note: Pagination removed - list endpoints now return arrays directly

// ToggleFavoriteResponse represents the response after toggling favorite
type ToggleFavoriteResponse struct {
	Message    string `json:"message"`
	IsFavorite bool   `json:"is_favorite"`
}

// === Factory Functions ===

// NewContractorSpecialtyResponse creates a ContractorSpecialtyResponse from a model
func NewContractorSpecialtyResponse(s *models.ContractorSpecialty) ContractorSpecialtyResponse {
	return ContractorSpecialtyResponse{
		ID:           s.ID,
		Name:         s.Name,
		Description:  s.Description,
		Icon:         s.Icon,
		DisplayOrder: s.DisplayOrder,
	}
}

// NewContractorUserResponse creates a ContractorUserResponse from a User model
func NewContractorUserResponse(u *models.User) *ContractorUserResponse {
	if u == nil {
		return nil
	}
	return &ContractorUserResponse{
		ID:        u.ID,
		Username:  u.Username,
		FirstName: u.FirstName,
		LastName:  u.LastName,
	}
}

// NewContractorResponse creates a ContractorResponse from a Contractor model
func NewContractorResponse(c *models.Contractor) ContractorResponse {
	resp := ContractorResponse{
		ID:            c.ID,
		ResidenceID:   c.ResidenceID, // Already a pointer
		CreatedByID:   c.CreatedByID,
		AddedBy:       c.CreatedByID, // Alias for KMM compatibility
		Name:          c.Name,
		Company:       c.Company,
		Phone:         c.Phone,
		Email:         c.Email,
		Website:       c.Website,
		Notes:         c.Notes,
		StreetAddress: c.StreetAddress,
		City:          c.City,
		StateProvince: c.StateProvince,
		PostalCode:    c.PostalCode,
		Rating:        c.Rating,
		IsFavorite:    c.IsFavorite,
		IsActive:      c.IsActive,
		TaskCount:     len(c.Tasks),
		CreatedAt:     c.CreatedAt,
		UpdatedAt:     c.UpdatedAt,
	}

	if c.CreatedBy.ID != 0 {
		resp.CreatedBy = NewContractorUserResponse(&c.CreatedBy)
	}

	resp.Specialties = make([]ContractorSpecialtyResponse, len(c.Specialties))
	for i, s := range c.Specialties {
		resp.Specialties[i] = NewContractorSpecialtyResponse(&s)
	}

	return resp
}

// NewContractorListResponse creates a list of contractor responses
func NewContractorListResponse(contractors []models.Contractor) []ContractorResponse {
	results := make([]ContractorResponse, len(contractors))
	for i, c := range contractors {
		results[i] = NewContractorResponse(&c)
	}
	return results
}