package main

import (
	"flag"
	"fmt"
	"github.com/aclindsa/ofxgo"
	"io"
	"os"
)

var downloadCommand = command{
	Name:        "download-bank",
	Description: "Download a bank account statement to a file",
	Flags:       flag.NewFlagSet("download-bank", flag.ExitOnError),
	CheckFlags:  downloadCheckFlags,
	Do:          download,
}

var filename, bankID, acctID, acctType string

func init() {
	defineServerFlags(downloadCommand.Flags)
	downloadCommand.Flags.StringVar(&filename, "filename", "./response.ofx", "The file to save to")
	downloadCommand.Flags.StringVar(&bankID, "bankid", "", "BankID (from `get-accounts` subcommand)")
	downloadCommand.Flags.StringVar(&acctID, "acctid", "", "AcctID (from `get-accounts` subcommand)")
	downloadCommand.Flags.StringVar(&acctType, "accttype", "CHECKING", "AcctType (from `get-accounts` subcommand)")
}

func downloadCheckFlags() bool {
	ret := checkServerFlags()

	if len(filename) == 0 {
		fmt.Println("Error: Filename empty")
		return false
	}

	return ret
}

func download() {
	client, query := newRequest()

	acctTypeEnum, err := ofxgo.NewAcctType(acctType)
	if err != nil {
		fmt.Println("Error parsing accttype:", err)
		os.Exit(1)
	}

	uid, err := ofxgo.RandomUID()
	if err != nil {
		fmt.Println("Error creating uid for transaction:", err)
		os.Exit(1)
	}

	statementRequest := ofxgo.StatementRequest{
		TrnUID: *uid,
		BankAcctFrom: ofxgo.BankAcct{
			BankID:   ofxgo.String(bankID),
			AcctID:   ofxgo.String(acctID),
			AcctType: acctTypeEnum,
		},
		Include: true,
	}

	query.Bank = append(query.Bank, &statementRequest)

	if dryrun {
		printRequest(client, query)
		return
	}

	response, err := client.RequestNoParse(query)
	if err != nil {
		fmt.Println("Error requesting account statement:", err)
		os.Exit(1)
	}
	defer response.Body.Close()

	file, err := os.Create(filename)
	if err != nil {
		fmt.Println("Error creating file to write to:", err)
		os.Exit(1)
	}
	defer file.Close()

	_, err = io.Copy(file, response.Body)
	if err != nil {
		fmt.Println("Error writing response to file:", err)
		os.Exit(1)
	}
}
