package main

import (
	"fmt"
	"log"
	"os"
	"strings"

	"github.com/urfave/cli"
)

/*

	scan,s [directory-with-.tidelift.yml]
	configure,c [directory-with-.tidelift.yml]
	verify [directory-with-.tidelift.yml]
*/
func main() {
	app := cli.NewApp()

	app.Commands = []cli.Command{
		{
			Name:    "scan",
			Aliases: []string{"s"},
			Usage:   "Scan a directory's manifests",
			Action: func(c *cli.Context) error {
				directory := getDirectory(c)

				return scan(directory)
			},
		},
		{
			Name:  "verify",
			Usage: "Verify .tidelift.yml configuration",
			Action: func(c *cli.Context) error {
				directory := getDirectory(c)

				return verify(directory)
			},
		},
		{
			Name:    "configure",
			Aliases: []string{"c"},
			Usage:   "Configure the app",
			Action: func(c *cli.Context) error {
				return cli.NewExitError("No Configuration provided", 4)
			},
		},
	}

	err := app.Run(os.Args)
	if err != nil {
		log.Fatal(err)
	}
}

func getDirectory(c *cli.Context) string {
	// Return a directory if it's in the arguments
	if len(c.Args()) > 0 {
		return c.Args().First()
	}
	return "."
}

// Scan will scan a directory's manifests for all supported manifest files
//  then it will upload them to tidelift for scanning
func scan(directory string) error {

	// Show error if no .tidelift.yml file
	if !verifyTideliftYamlExists(directory) {
		return cli.NewExitError("no .tidelift.yml at supplied directory path", 6)
	}
	fmt.Println(strings.Join(getListOfManifestFilenames(directory), ", "))

	// TODO, actually upload scan, don't just print names
	return nil
}

// Verify will verify that a .tidelift.yml file has the minimum information
// in order to upload a manifest to Tidelift
func verify(directory string) error {
	// Show error if no .tidelift.yml file
	if !verifyTideliftYamlExists(directory) {
		return cli.NewExitError("no .tidelift.yml at supplied directory path", 6)
	}
	missingKey := passesMinimumRequirements(directory)
	if missingKey != "" {
		errorMsg := fmt.Sprintf("Missing key '%s:' in .tidelift.yml", missingKey)
		return cli.NewExitError(errorMsg, 7)

	}

	return nil
}