// method runner for pasting
package paste

import (
	"fmt"
	"io/ioutil"
	"os"

	"github.com/rocky-linux/rpaste/modules/utility"
	"github.com/urfave/cli/v2"
)

var (
	PasteMethod = &cli.Command{
		Name:        "Paste",
		Usage:       "Pastes content to pastebin",
		Description: `This is the default action for the rpaste utility.`,
		Action:      runPaste,
	}
	PasteData string
)

func runPaste(ctx *cli.Context) error {
	// check
	stdMethod := utility.StdInChecker()
	sysInfoMethod := ctx.Bool("sysinfo")
	pasteBinGoTo := ctx.String("pastebin")
	dryMode := ctx.Bool("dry")
	//timeInput := ctx.String("life")
	//lexerInput := ctx.String("type")

	//verifyValues, err := utility.VerifyInputs(timeInput, lexerInput)
	//if err != nil {
	//	fmt.Printf("%s", err)
	//}

	// Check sysinfo is enabled and run through all the required stuff
	if sysInfoMethod {
		PasteData = SysInfoGather()
	}

	// Paste Data is empty, checking if input is from stdin
	if stdMethod && PasteData == "" {
		fio, err := os.Stdin.Stat()
		if (fio.Mode() & os.ModeCharDevice) == 0 {
			bytes, _ := ioutil.ReadAll(os.Stdin)
			PasteData = string(bytes)
		} else if err != nil {
			fmt.Printf("Could not read from stdin: (%s)\n", err)
			os.Exit(1)
		}
	} else if !stdMethod && PasteData == "" {
		// In the event that input is not from stdin, let's check if a file name
		// was given to us. golang doesn't let us do the same thing that python,
		// bash, perl, and others do, which is call the last index item with -1.
		// Below is basically a hack where we get the length of the arguments,
		// subtract by 1, and use that to get the last argument index number.
		argList := os.Args
		lastArg := argList[len(argList)-1]
		if lastArg != os.Args[0] {
			// Check if input exists
			checkarg, _ := utility.IsExist(lastArg)
			// if it's true, check if it's a file
			if checkarg {
				checkfile, _ := utility.IsFile(lastArg)
				// if it's a file, send it to the PasteData var
				if checkfile {
					fileBytes, err := ioutil.ReadFile(lastArg)
					if err != nil {
						panic(err)
					}
					PasteData = string(fileBytes)
				} else {
					fmt.Printf("%s is not a file\n", lastArg)
					os.Exit(1)
				}
			} else {
				// It doesn't exist, so we need to report if the reported location
				// does not exist. Else, if it starts with a "-", just skip everything
				// entirely.
				if len(lastArg) > 1 && lastArg[:1] == "-" {
					PasteData = ""
					// This section is a bug for now - If a value to an arg is provided
					// and it's not supposed to be a file, we still checked it above.
				} else if !(len(lastArg) > 1 && lastArg[:1] == "-") {
					fmt.Printf("File not found or is an argument value: %s\n", lastArg)
				}
			}
		}
	}

	// Final check to see if there's paste data
	if PasteData == "" {
		cli.ShowAppHelp(ctx)
		os.Exit(0)
	}

	// Check that PasteData is text, and not binary
	// fmt.Println("You cannot upload binary data.")

	if dryMode {
		fmt.Printf(PasteData)
	} else {
		switch pasteBinGoTo {
		case "rpaste":
			Rpaste(ctx.String("life"), ctx.String("type"), PasteData)
		case "fpaste":
			Fpaste(ctx.String("life"), ctx.String("type"), PasteData)
		default:
			fmt.Printf("You have provided an unknown paste bin.\n\n")
			cli.ShowAppHelp(ctx)
		}
	}

	return nil
}