package app

import (
	"errors"
	"os"
	"path"
	"strings"

	"coopcloud.tech/abra/cli/internal"
	"coopcloud.tech/abra/config"
	"github.com/sirupsen/logrus"
	"github.com/urfave/cli/v2"
)

var appCheckCommand = &cli.Command{
	Name:      "check",
	ArgsUsage: "<service>",
	Action: func(c *cli.Context) error {
		appName := c.Args().First()
		if appName == "" {
			internal.ShowSubcommandHelpAndError(c, errors.New("no app name provided"))
		}

		appFiles, err := config.LoadAppFiles("")
		if err != nil {
			logrus.Fatal(err)
		}

		appEnv, err := config.GetApp(appFiles, appName)
		if err != nil {
			logrus.Fatal(err)
		}

		envSamplePath := path.Join(config.ABRA_DIR, "apps", appEnv.Type, ".env.sample")
		if _, err := os.Stat(envSamplePath); err != nil {
			if os.IsNotExist(err) {
				logrus.Fatalf("'%s' does not exist?", envSamplePath)
			}
			logrus.Fatal(err)
		}

		envSample, err := config.ReadEnv(envSamplePath)
		if err != nil {
			logrus.Fatal(err)
		}

		var missing []string
		for k := range envSample {
			if _, ok := appEnv.Env[k]; !ok {
				missing = append(missing, k)
			}
		}

		if len(missing) > 0 {
			path := appFiles[appName].Path
			missingEnvVars := strings.Join(missing, ", ")
			logrus.Fatalf("%s is missing %s", path, missingEnvVars)
		}

		logrus.Info("All necessary environment variables defined")

		return nil
	},
}