package domain

import (
	"errors"
	"time"
)

var (
	ErrInsufficientBalance     = errors.New("insufficient balance")
	ErrInvalidWithdrawalAmount = errors.New("invalid withdrawal amount")
	ErrWithdrawalNotFound      = errors.New("withdrawal not found")
	ErrPaymentNotFound         = errors.New("payment not found")
	ErrPaymentAlreadyExists    = errors.New("payment with this reference already exists")
	ErrInvalidPaymentAmount    = errors.New("invalid payment amount")
)

type PaymentStatus string

type WithdrawalStatus string

const (
	WithdrawalStatusSuccessful WithdrawalStatus = "success"
	WithdrawalStatusPending    WithdrawalStatus = "pending"
	WithdrawalStatusProcessing WithdrawalStatus = "processing"
	WithdrawalStatusCompleted  WithdrawalStatus = "completed"
	WithdrawalStatusFailed     WithdrawalStatus = "failed"
)

const (
	PaymentStatusSuccessful PaymentStatus = "success"
	PaymentStatusPending    PaymentStatus = "pending"
	PaymentStatusCompleted  PaymentStatus = "completed"
	PaymentStatusFailed     PaymentStatus = "failed"
)

type ChapaInitDepositRequest struct {
	Amount      Currency `json:"amount"`
	Currency    string   `json:"currency"`
	Email       string   `json:"email"`
	FirstName   string   `json:"first_name"`
	LastName    string   `json:"last_name"`
	TxRef       string   `json:"tx_ref"`
	CallbackURL string   `json:"callback_url"`
	ReturnURL   string   `json:"return_url"`
	PhoneNumber string   `json:"phone_number"`
	// PhoneNumber string   `json:"phone_number"`
}

type ChapaDepositRequestPayload struct {
	Amount float64 `json:"amount" validate:"required,gt=0"`
}

type ChapaWebhookPayload struct {
	TxRef  string   `json:"trx_ref"`
	Amount Currency `json:"amount"`
	// Currency string        `json:"currency"`
	Status PaymentStatus `json:"status"`
}

type ChapaPaymentWebhookRequest struct {
	TxRef  string        `json:"trx_ref"`
	RefId  string        `json:"ref_id"`
	Status PaymentStatus `json:"status"`
}

// PaymentResponse contains the response from payment initialization
type ChapaDepositResponse struct {
	CheckoutURL string
	Reference   string
}

// PaymentVerification contains payment verification details
type ChapaDepositVerification struct {
	Status   PaymentStatus
	Amount   Currency
	Currency string
}

type ChapaPaymentVerificationResponse struct {
	Message string `json:"message"`
	Status  string `json:"status"`
	Data    struct {
		FirstName     string  `json:"first_name"`
		LastName      string  `json:"last_name"`
		Email         string  `json:"email"`
		Currency      string  `json:"currency"`
		Amount        float64 `json:"amount"`
		Charge        float64 `json:"charge"`
		Mode          string  `json:"mode"`
		Method        string  `json:"method"`
		Type          string  `json:"type"`
		Status        string  `json:"status"`
		Reference     string  `json:"reference"`
		TxRef         string  `json:"tx_ref"`
		Customization struct {
			Title       string      `json:"title"`
			Description string      `json:"description"`
			Logo        interface{} `json:"logo"`
		} `json:"customization"`
		Meta      interface{} `json:"meta"`
		CreatedAt string      `json:"created_at"`
		UpdatedAt string      `json:"updated_at"`
	} `json:"data"`
}

type ChapaTransferVerificationResponse struct {
	Message string `json:"message"`
	Status  string `json:"status"`
	Data    struct {
		AccountName         string      `json:"account_name"`
		AccountNumber       string      `json:"account_number"`
		Mobile              interface{} `json:"mobile"`
		Currency            string      `json:"currency"`
		Amount              float64     `json:"amount"`
		Charge              float64     `json:"charge"`
		Mode                string      `json:"mode"`
		TransferMethod      string      `json:"transfer_method"`
		Narration           interface{} `json:"narration"`
		ChapaTransferID     string      `json:"chapa_transfer_id"`
		BankCode            int         `json:"bank_code"`
		BankName            string      `json:"bank_name"`
		CrossPartyReference interface{} `json:"cross_party_reference"`
		IPAddress           string      `json:"ip_address"`
		Status              string      `json:"status"`
		TxRef               string      `json:"tx_ref"`
		CreatedAt           string      `json:"created_at"`
		UpdatedAt           string      `json:"updated_at"`
	} `json:"data"`
}

type ChapaAllTransactionsResponse struct {
	Message string `json:"message"`
	Status  string `json:"status"`
	Data    struct {
		Transactions []struct {
			Status        string  `json:"status"`
			RefID         string  `json:"ref_id"`
			Type          string  `json:"type"`
			CreatedAt     string  `json:"created_at"`
			Currency      string  `json:"currency"`
			Amount        string  `json:"amount"`
			Charge        string  `json:"charge"`
			TransID       *string `json:"trans_id"`
			PaymentMethod string  `json:"payment_method"`
			Customer      struct {
				ID        int64   `json:"id"`
				Email     *string `json:"email"`
				FirstName *string `json:"first_name"`
				LastName  *string `json:"last_name"`
				Mobile    *string `json:"mobile"`
			} `json:"customer"`
		} `json:"transactions"`
		Pagination struct {
			PerPage      int     `json:"per_page"`
			CurrentPage  int     `json:"current_page"`
			FirstPageURL string  `json:"first_page_url"`
			NextPageURL  *string `json:"next_page_url"`
			PrevPageURL  *string `json:"prev_page_url"`
		} `json:"pagination"`
	} `json:"data"`
}

type ChapaTransactionEvent struct {
	Item      int64     `json:"item"`
	Message   string    `json:"message"`
	Type      string    `json:"type"`
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`
}

type ChapaTransaction struct {
	Status        string        `json:"status"`
	RefID         string        `json:"ref_id"`
	Type          string        `json:"type"`
	CreatedAt     string        `json:"created_at"`
	Currency      string        `json:"currency"`
	Amount        string        `json:"amount"`
	Charge        string        `json:"charge"`
	TransID       *string       `json:"trans_id"`
	PaymentMethod string        `json:"payment_method"`
	Customer      ChapaCustomer `json:"customer"`
}

type ChapaCustomer struct {
	ID        int64   `json:"id"`
	Email     *string `json:"email"`
	FirstName *string `json:"first_name"`
	LastName  *string `json:"last_name"`
	Mobile    *string `json:"mobile"`
}

// type Bank struct {
// 	ID            int       `json:"id"`
// 	Slug          string    `json:"slug"`
// 	Swift         string    `json:"swift"`
// 	Name          string    `json:"name"`
// 	AcctLength    int       `json:"acct_length"`
// 	CountryID     int       `json:"country_id"`
// 	IsMobileMoney int       `json:"is_mobilemoney"` // nullable
// 	IsActive      int       `json:"is_active"`
// 	IsRTGS        int       `json:"is_rtgs"`
// 	Active        int       `json:"active"`
// 	Is24Hrs       int       `json:"is_24hrs"` // nullable
// 	CreatedAt     time.Time `json:"created_at"`
// 	UpdatedAt     time.Time `json:"updated_at"`
// 	Currency      string    `json:"currency"`
// 	BankLogo      string    `json:"bank_logo"` // URL or base64
// }

type SwapResponse struct {
	Message string `json:"message"`
	Status  string `json:"status"`
	Data    struct {
		Status          string  `json:"status"`
		RefID           string  `json:"ref_id"`
		FromCurrency    string  `json:"from_currency"`
		ToCurrency      string  `json:"to_currency"`
		Amount          float64 `json:"amount"`
		ExchangedAmount float64 `json:"exchanged_amount"`
		Charge          float64 `json:"charge"`
		Rate            float64 `json:"rate"`
		CreatedAt       string  `json:"created_at"`
		UpdatedAt       string  `json:"updated_at"`
	} `json:"data"`
}

type ChapaTransfersListResponse struct {
	Message string `json:"message"`
	Status  string `json:"status"`
	Meta    struct {
		CurrentPage  int           `json:"current_page"`
		FirstPageURL string        `json:"first_page_url"`
		LastPage     int           `json:"last_page"`
		LastPageURL  string        `json:"last_page_url"`
		NextPageURL  string        `json:"next_page_url"`
		Path         string        `json:"path"`
		PerPage      int           `json:"per_page"`
		PrevPageURL  interface{}   `json:"prev_page_url"`
		To           int           `json:"to"`
		Total        int           `json:"total"`
		Error        []interface{} `json:"error"`
	} `json:"meta"`
	Data []struct {
		AccountName    string      `json:"account_name"`
		AccountNumber  string      `json:"account_number"`
		Currency       string      `json:"currency"`
		Amount         float64     `json:"amount"`
		Charge         float64     `json:"charge"`
		TransferType   string      `json:"transfer_type"`
		ChapaReference string      `json:"chapa_reference"`
		BankCode       int         `json:"bank_code"`
		BankName       string      `json:"bank_name"`
		BankReference  interface{} `json:"bank_reference"`
		Status         string      `json:"status"`
		Reference      interface{} `json:"reference"`
		CreatedAt      string      `json:"created_at"`
		UpdatedAt      string      `json:"updated_at"`
	} `json:"data"`
}

type BankResponse struct {
	Message string     `json:"message"`
	Status  string     `json:"status"`
	Data    []BankData `json:"data"`
}

type BankData struct {
	ID            int       `json:"id"`
	Slug          string    `json:"slug"`
	Swift         string    `json:"swift"`
	Name          string    `json:"name"`
	AcctLength    int       `json:"acct_length"`
	CountryID     int       `json:"country_id"`
	IsMobileMoney int       `json:"is_mobilemoney"` // nullable
	IsActive      int       `json:"is_active"`
	IsRTGS        int       `json:"is_rtgs"`
	Active        int       `json:"active"`
	Is24Hrs       int       `json:"is_24hrs"` // nullable
	CreatedAt     time.Time `json:"created_at"`
	UpdatedAt     time.Time `json:"updated_at"`
	Currency      string    `json:"currency"`
}

type ChapaWithdrawal struct {
	ID            string
	UserID        int64
	Amount        Currency
	AccountNumber string
	BankCode      string
	Status        WithdrawalStatus
	Reference     string
	CreatedAt     time.Time
	UpdatedAt     time.Time
}

type ChapaWithdrawalRequest struct {
	AccountName   string `json:"account_name"`
	AccountNumber string `json:"account_number"`
	Amount        string `json:"amount"` // string because Chapa API uses string for monetary values
	Currency      string `json:"currency"`
	Reference     string `json:"reference"`
	BankCode      int    `json:"bank_code"`
}

// type ChapaWithdrawalRequest struct {
// 	AccountName     string `json:"account_name"`
// 	AccountNumber   string `json:"account_number"`
// 	Amount          Currency `json:"amount"`
// 	Currency        string `json:"currency"`
// 	BeneficiaryName string `json:"beneficiary_name"`
// 	BankCode        string `json:"bank_code"`
// 	PhoneNumber     string `json:"phone_number"`
// }

type ChapaWithdrawalResponse struct {
	Message string `json:"message"`
	Status  string `json:"status"`
	Data    string `json:"data"` // Accepts string instead of struct
}

type ChapaTransactionType struct {
	Type string `json:"type"`
}

type ChapaWebhookTransfer struct {
	Event          string `json:"event"`
	Type           string `json:"type"`
	AccountName    string `json:"account_name"`
	AccountNumber  string `json:"account_number"`
	BankID         int    `json:"bank_id"`
	BankName       string `json:"bank_name"`
	Amount         string `json:"amount"`
	Charge         string `json:"charge"`
	Currency       string `json:"currency"`
	Status         string `json:"status"`
	Reference      string `json:"reference"`
	ChapaReference string `json:"chapa_reference"`
	BankReference  string `json:"bank_reference"`
	CreatedAt      string `json:"created_at"`
	UpdatedAt      string `json:"updated_at"`
}

type ChapaWebhookPayment struct {
	Event         string                    `json:"event"`
	FirstName     string                    `json:"first_name"`
	LastName      string                    `json:"last_name"`
	Email         *string                   `json:"email,omitempty"`
	Mobile        string                    `json:"mobile"`
	Currency      string                    `json:"currency"`
	Amount        string                    `json:"amount"`
	Charge        string                    `json:"charge"`
	Status        string                    `json:"status"`
	Mode          string                    `json:"mode"`
	Reference     string                    `json:"reference"`
	CreatedAt     string                    `json:"created_at"`
	UpdatedAt     string                    `json:"updated_at"`
	Type          string                    `json:"type"`
	TxRef         string                    `json:"tx_ref"`
	PaymentMethod string                    `json:"payment_method"`
	Customization ChapaWebhookCustomization `json:"customization"`
	Meta          interface{}               `json:"meta"` // may vary in structure, so kept flexible
}

type ChapaWebhookCustomization struct {
	Title       *string `json:"title,omitempty"`
	Description *string `json:"description,omitempty"`
	Logo        *string `json:"logo,omitempty"`
}

type Balance struct {
	Currency         string  `json:"currency"`
	AvailableBalance float64 `json:"available_balance"`
	LedgerBalance    float64 `json:"ledger_balance"`
}

type SwapRequest struct {
	From   string  `json:"from"`
	To     string  `json:"to"`
	Amount float64 `json:"amount"`
}

type ChapaCancelResponse struct {
	Message   string  `json:"message"`
	Status    string  `json:"status"`
	TxRef     string  `json:"tx_ref"`
	Amount    float64 `json:"amount"`
	Currency  string  `json:"currency"`
	CreatedAt string  `json:"created_at"`
	UpdatedAt string  `json:"updated_at"`
}