package domain

import (
	"time"

	dbgen "github.com/SamuelTariku/FortuneBet-Backend/gen/db"
	"github.com/jackc/pgx/v5/pgtype"
)

type TransferType string

const (
	DEPOSIT  TransferType = "deposit"
	WITHDRAW TransferType = "withdraw"
	WALLET   TransferType = "wallet"
)

type PaymentMethod string

// Info on why the wallet was modified
// If its internal system modification then, its always direct
const (
	TRANSFER_DIRECT    PaymentMethod = "direct"
	TRANSFER_CASH      PaymentMethod = "cash"
	TRANSFER_BANK      PaymentMethod = "bank"
	TRANSFER_CHAPA     PaymentMethod = "chapa"
	TRANSFER_ARIFPAY   PaymentMethod = "arifpay"
	TRANSFER_SANTIMPAY PaymentMethod = "santimpay"
	TRANSFER_ADDISPAY  PaymentMethod = "addispay"
	TRANSFER_OTHER     PaymentMethod = "other"
)

type TransactionApproval struct {
	ID         int64
	TransferID int64
	ApprovedBy int64  // User ID of approver
	Status     string // "pending", "approved", "rejected"
	Comments   string
	CreatedAt  time.Time
	UpdatedAt  time.Time
}

type ApprovalAction string

const (
	ApprovalActionApprove ApprovalAction = "approve"
	ApprovalActionReject  ApprovalAction = "reject"
)

type ApprovalRequest struct {
	TransferID int64
	Action     ApprovalAction
	Comments   string
	ApproverID int64
}

// Info for the payment providers
type PaymentDetails struct {
	ReferenceNumber ValidString
	BankNumber      ValidString
}

// A Transfer is logged for every modification of ALL wallets and wallet types
type Transfer struct {
	ID               int64         `json:"id"`
	Amount           Currency      `json:"amount"`
	Verified         bool          `json:"verified"`
	Message          string        `json:"message"`
	Type             TransferType  `json:"type"`
	PaymentMethod    PaymentMethod `json:"payment_method"`
	ReceiverWalletID ValidInt64    `json:"receiver_wallet_id"`
	SenderWalletID   ValidInt64    `json:"sender_wallet_id"`
	ReferenceNumber  string        `json:"reference_number"` // <-- needed
	SessionID        string        `json:"session_id"`
	Status           string        `json:"status"`
	DepositorID      ValidInt64    `json:"depositor_id"`
	CreatedAt        time.Time     `json:"created_at"`
	UpdatedAt        time.Time     `json:"updated_at"`
}
type TransferDetail struct {
	ID                   int64         `json:"id"`
	Amount               Currency      `json:"amount"`
	Verified             bool          `json:"verified"`
	Message              string        `json:"message"`
	Type                 TransferType  `json:"type"`
	PaymentMethod        PaymentMethod `json:"payment_method"`
	ReceiverWalletID     ValidInt64    `json:"receiver_wallet_id"`
	SenderWalletID       ValidInt64    `json:"sender_wallet_id"`
	ReferenceNumber      string        `json:"reference_number"` // <-- needed
	SessionID            string        `json:"session_id"`
	Status               string        `json:"status"`
	DepositorID          ValidInt64    `json:"depositor_id"`
	DepositorFirstName   string        `json:"depositor_first_name"`
	DepositorLastName    string        `json:"depositor_last_name"`
	DepositorPhoneNumber string        `json:"depositor_phone_number"`
	CreatedAt            time.Time     `json:"created_at"`
	UpdatedAt            time.Time     `json:"updated_at"`
}

type CreateTransfer struct {
	Amount           Currency      `json:"amount"`
	Verified         bool          `json:"verified"`
	Message          string        `json:"message"`
	Type             TransferType  `json:"type"`
	PaymentMethod    PaymentMethod `json:"payment_method"`
	ReceiverWalletID ValidInt64    `json:"receiver_wallet_id"`
	SenderWalletID   ValidInt64    `json:"sender_wallet_id"`
	ReferenceNumber  string        `json:"reference_number"` // <-- needed
	SessionID        string        `json:"session_id"`
	Status           string        `json:"status"`
	CashierID        ValidInt64    `json:"cashier_id"`
}

type TransferStats struct {
	TotalTransfer       int64
	TotalDeposits       int64
	TotalWithdraws      int64
	TotalWalletToWallet int64
}

func ConvertDBTransferDetail(transfer dbgen.WalletTransferDetail) TransferDetail {
	return TransferDetail{
		ID:       transfer.ID,
		Amount:   Currency(transfer.Amount.Int64),
		Type:     TransferType(transfer.Type.String),
		Verified: transfer.Verified.Bool,
		Message:  transfer.Message,
		ReceiverWalletID: ValidInt64{
			Value: transfer.ReceiverWalletID.Int64,
			Valid: transfer.ReceiverWalletID.Valid,
		},
		SenderWalletID: ValidInt64{
			Value: transfer.SenderWalletID.Int64,
			Valid: transfer.SenderWalletID.Valid,
		},
		DepositorID: ValidInt64{
			Value: transfer.CashierID.Int64,
			Valid: transfer.CashierID.Valid,
		},
		DepositorFirstName:   transfer.FirstName.String,
		DepositorLastName:    transfer.LastName.String,
		DepositorPhoneNumber: transfer.PhoneNumber.String,
		PaymentMethod:        PaymentMethod(transfer.PaymentMethod.String),
		ReferenceNumber:      transfer.ReferenceNumber,
		SessionID:            transfer.SessionID.String,
		Status:               transfer.Status.String,
		CreatedAt:            transfer.CreatedAt.Time,
		UpdatedAt:            transfer.UpdatedAt.Time,
	}
}
func ConvertDBTransfer(transfer dbgen.WalletTransfer) Transfer {
	return Transfer{
		ID:       transfer.ID,
		Amount:   Currency(transfer.Amount.Int64),
		Type:     TransferType(transfer.Type.String),
		Verified: transfer.Verified.Bool,
		Message:  transfer.Message,
		ReceiverWalletID: ValidInt64{
			Value: transfer.ReceiverWalletID.Int64,
			Valid: transfer.ReceiverWalletID.Valid,
		},
		SenderWalletID: ValidInt64{
			Value: transfer.SenderWalletID.Int64,
			Valid: transfer.SenderWalletID.Valid,
		},
		DepositorID: ValidInt64{
			Value: transfer.CashierID.Int64,
			Valid: transfer.CashierID.Valid,
		},
		PaymentMethod:   PaymentMethod(transfer.PaymentMethod.String),
		ReferenceNumber: transfer.ReferenceNumber,
		SessionID:       transfer.SessionID.String,
		Status:          transfer.Status.String,
		CreatedAt:       transfer.CreatedAt.Time,
		UpdatedAt:       transfer.UpdatedAt.Time,
	}
}

func ConvertCreateTransfer(transfer CreateTransfer) dbgen.CreateTransferParams {
	return dbgen.CreateTransferParams{
		Message:          transfer.Message,
		Amount:           pgtype.Int8{Int64: int64(transfer.Amount), Valid: true},
		Type:             pgtype.Text{String: string(transfer.Type), Valid: true},
		ReceiverWalletID: transfer.ReceiverWalletID.ToPG(),
		SenderWalletID:   transfer.SenderWalletID.ToPG(),
		CashierID:        transfer.CashierID.ToPG(),
		ReferenceNumber:  string(transfer.ReferenceNumber),
		SessionID: pgtype.Text{
			String: transfer.SessionID,
			Valid:  true,
		},
		PaymentMethod: pgtype.Text{String: string(transfer.PaymentMethod), Valid: true},
		Verified: pgtype.Bool{
			Bool:  transfer.Verified,
			Valid: true,
		},
	}
}