package cmd

import (
	"os"

	"github.com/spf13/cobra"
	"github.com/spf13/cobra/doc"
)

var docsCmd = &cobra.Command{
	Use:       "docs",
	Aliases:   []string{"documentation"},
	Short:     "Generate documentation for git-project-manager",
	Args:      cobra.RangeArgs(1, 1),
	ValidArgs: []string{"md", "man", "yaml"},
	Run:       runDocsCmd,
}

func runDocsCmd(cmd *cobra.Command, args []string) {
	outDir, err := cmd.Flags().GetString(FlagDocsPath)
	if err != nil {
		plog.Error("missing docs path")
	}

	prepareDocsDir(cmd, outDir)

	switch args[0] {
	case "md":
		err = doc.GenMarkdownTree(cmd.Root(), outDir)
	case "man":
		err = doc.GenManTree(cmd.Root(), &doc.GenManHeader{
			Title:   "EIA Client",
			Section: "1",
		}, outDir)
	case "yaml":
		err = doc.GenYamlTree(cmd.Root(), outDir)
	default:
		plog.Error("invalid docs type", plog.Args("type", args[0]))
	}

	plog.Info("docs generation complete", plog.Args(
		"type", args[0], "docsDir", outDir))
}

func prepareDocsDir(cmd *cobra.Command, outDir string) {
	_, err := os.Stat(outDir)
	if err != nil {
		err = os.Mkdir(outDir, 0o755)
		if err != nil {
			plog.Error("failed to create docs path", plog.Args(
				"error", err.Error(), "docsDir", outDir))
		}
	}
}

func init() {
	docsCmd.PersistentFlags().StringP(FlagDocsPath, "d", "./docs", "specify output directory for documentation")

	rootCmd.AddCommand(docsCmd)
}