commands

var CheckCommand = &cobra.Command{
	Use:     "check",
	Aliases: []string{"c"},
	Long:    "check command walks the specified paths recursively and checks if the specified files have the license header in the config file.",
	RunE: func(cmd *cobra.Command, args []string) error {
		hasErrors := false
		for _, h := range Config.Headers() {
			var result header.Result

			if len(args) > 0 {
				logger.Log.Debugln("Overriding paths with command line args.")
				h.Paths = args
			}

			if err := header.Check(h, &result); err != nil {
				return err
			}

			logger.Log.Infoln(result.String())

			writeSummaryQuietly(&result)

			if result.HasFailure() {
				if err := review.Header(&result, h); err != nil {
					logger.Log.Warnln("Failed to create review comments", err)
				}
				hasErrors = true
				logger.Log.Error(result.Error())
			}
		}
		if hasErrors {
			return fmt.Errorf("one or more files does not have a valid license header")
		}
		return nil
	},
}

var (
	Config config.Config
)

var Deps = &cobra.Command{
	Use:     "dependency",
	Aliases: []string{"d", "deps", "dep", "dependencies"},
	Short:   "Dependencies related commands; e.g. check, etc.",
	Long:    "deps command checks all dependencies of a module and their transitive dependencies.",
}

var DepsCheckCommand = &cobra.Command{
	Use:     "check",
	Aliases: []string{"c"},
	Long:    "resolves and check license compatibility in all dependencies of a module and their transitive dependencies",
	RunE: func(cmd *cobra.Command, args []string) error {
		var errors []error
		configDeps := Config.Dependencies()
		for _, header := range Config.Headers() {
			if err := deps.Check(header.License.SpdxID, configDeps, weakCompatible); err != nil {
				errors = append(errors, err)
			}
		}
		if len(errors) > 0 {
			for _, err := range errors {
				logger.Log.Error(err)
			}
			return fmt.Errorf("one or more errors occurred checking license compatibility")
		}
		return nil
	},
}

var DepsResolveCommand = &cobra.Command{
	Use:     "resolve",
	Aliases: []string{"r"},
	Long:    "resolves all dependencies of a module and their transitive dependencies",
	PreRunE: func(cmd *cobra.Command, args []string) error {
		if outDir != "" {
			absPath, err := filepath.Abs(outDir)
			if err != nil {
				return err
			}
			outDir = absPath
			if err := os.MkdirAll(outDir, 0o700); err != nil && !os.IsExist(err) {
				return err
			}
		}
		if summaryTplPath != "" {
			absPath, err := filepath.Abs(summaryTplPath)
			if err != nil {
				return err
			}
			summaryTplPath = absPath
			tpl, err := deps.ParseTemplate(os.DirFS(filepath.Dir(absPath)), filepath.Base(absPath))
			if err != nil {
				return err
			}
			summaryTpl = tpl
		}
		if licensePath != "" {
			absPath, err := filepath.Abs(licensePath)
			if err != nil {
				return err
			}
			licensePath = absPath
			if err := os.MkdirAll(filepath.Dir(outDir), 0o700); err != nil && !os.IsExist(err) {
				return err
			}

			if summaryTpl == nil {
				tpl, err := deps.ParseTemplate(assets.FS(), "default-license.tpl")
				if err != nil {
					return err
				}
				summaryTpl = tpl
			}
		}
		return nil
	},
	RunE: func(cmd *cobra.Command, args []string) error {
		report := deps.Report{}

		configDeps := Config.Dependencies()
		if err := deps.Resolve(configDeps, &report); err != nil {
			return err
		}

		if summaryTpl != nil {
			if err := writeSummary(&report, licensePath); err != nil {
				return err
			}
		}

		if outDir != "" {
			for _, result := range report.Resolved {
				writeLicense(result)
			}
		}

		fmt.Println(report.String())

		if skipped := len(report.Skipped); skipped > 0 {
			pkgs := make([]string, skipped)
			for i, s := range report.Skipped {
				pkgs[i] = s.Dependency
			}
			return fmt.Errorf(
				"failed to identify the licenses of following packages (%d):\n%s",
				len(pkgs), strings.Join(pkgs, "\n"),
			)
		}

		return nil
	},
}

var FixCommand = &cobra.Command{
	Use:     "fix",
	Aliases: []string{"f"},
	Long:    "fix command walks the specified paths recursively and fix the license header if the specified files don't have the license header.",
	RunE: func(cmd *cobra.Command, args []string) error {
		var errors []string
		for _, h := range Config.Headers() {
			var result header.Result
			var files []string

			if len(args) > 0 {
				files = args
			} else if err := header.Check(h, &result); err != nil {
				return err
			} else {
				files = result.Failure
			}

			for _, file := range files {
				if err := header.Fix(file, h, &result); err != nil {
					errors = append(errors, err.Error())
				}
			}

			logger.Log.Infoln(result.String())
		}
		if len(errors) > 0 {
			return fmt.Errorf("%s", strings.Join(errors, "\n"))
		}
		return nil
	},
}

var Header = &cobra.Command{
	Use:     "header",
	Aliases: []string{"h"},
	Short:   "License header related commands; e.g. check, fix, etc.",
	Long:    "`header` command walks the specified paths recursively and checks if the specified files have the license header in the config file.",
}