package contract

import (
	"time"

	"github.com/google/uuid"
)

// Existing gamification contracts
type CreateCustomerPointsRequest struct {
	CustomerID uuid.UUID `json:"customer_id" validate:"required"`
	Balance    int64     `json:"balance" validate:"min=0"`
}

type UpdateCustomerPointsRequest struct {
	Balance int64 `json:"balance" validate:"min=0"`
}

type AddCustomerPointsRequest struct {
	Points int64 `json:"points" validate:"required,min=1"`
}

type DeductCustomerPointsRequest struct {
	Points int64 `json:"points" validate:"required,min=1"`
}

type CustomerPointsResponse struct {
	ID         uuid.UUID         `json:"id"`
	CustomerID uuid.UUID         `json:"customer_id"`
	Balance    int64             `json:"balance"`
	Customer   *CustomerResponse `json:"customer,omitempty"`
	CreatedAt  time.Time         `json:"created_at"`
	UpdatedAt  time.Time         `json:"updated_at"`
}

type ListCustomerPointsRequest struct {
	Page      int    `json:"page" validate:"min=1"`
	Limit     int    `json:"limit" validate:"min=1,max=100"`
	Search    string `json:"search"`
	SortBy    string `json:"sort_by" validate:"omitempty,oneof=balance created_at updated_at"`
	SortOrder string `json:"sort_order" validate:"omitempty,oneof=asc desc"`
}

type PaginatedCustomerPointsResponse struct {
	Data       []CustomerPointsResponse `json:"data"`
	TotalCount int                      `json:"total_count"`
	Page       int                      `json:"page"`
	Limit      int                      `json:"limit"`
	TotalPages int                      `json:"total_pages"`
}

// New customer API contracts
type GetCustomerPointsRequest struct {
	// No additional fields needed - customer ID comes from JWT token
}

type GetCustomerTokensRequest struct {
	// No additional fields needed - customer ID comes from JWT token
}

type GetCustomerWalletRequest struct {
	// No additional fields needed - customer ID comes from JWT token
}

// Response Contracts
type GetCustomerPointsResponse struct {
	Status  string                         `json:"status"`
	Message string                         `json:"message"`
	Data    *GetCustomerPointsResponseData `json:"data,omitempty"`
}

type GetCustomerPointsResponseData struct {
	TotalPoints   int64               `json:"total_points"`
	PointsHistory []PointsHistoryItem `json:"points_history,omitempty"`
	LastUpdated   time.Time           `json:"last_updated"`
}

type PointsHistoryItem struct {
	ID          string    `json:"id"`
	Points      int64     `json:"points"`
	Type        string    `json:"type"` // EARNED, REDEEMED, EXPIRED
	Description string    `json:"description"`
	CreatedAt   time.Time `json:"created_at"`
}

type GetCustomerTokensResponse struct {
	Status  string                         `json:"status"`
	Message string                         `json:"message"`
	Data    *GetCustomerTokensResponseData `json:"data,omitempty"`
}

type GetCustomerTokensResponseData struct {
	TotalTokens   int64               `json:"total_tokens"`
	TokensHistory []TokensHistoryItem `json:"tokens_history,omitempty"`
	LastUpdated   time.Time           `json:"last_updated"`
}

type TokensHistoryItem struct {
	ID          string    `json:"id"`
	Tokens      int64     `json:"tokens"`
	Type        string    `json:"type"` // EARNED, REDEEMED, EXPIRED
	Description string    `json:"description"`
	CreatedAt   time.Time `json:"created_at"`
}

type GetCustomerWalletResponse struct {
	Status  string                         `json:"status"`
	Message string                         `json:"message"`
	Data    *GetCustomerWalletResponseData `json:"data,omitempty"`
}

type GetCustomerWalletResponseData struct {
	TotalPoints   int64               `json:"total_points"`
	TotalTokens   int64               `json:"total_tokens"`
	PointsHistory []PointsHistoryItem `json:"points_history,omitempty"`
	TokensHistory []TokensHistoryItem `json:"tokens_history,omitempty"`
	LastUpdated   time.Time           `json:"last_updated"`
}