package main

import (
	"flag"
	"fmt"
	"os"
	"path/filepath"

	"git.hrafn.xyz/aether/vociferate/internal/vociferate"
)

func main() {
	version := flag.String("version", "", "semantic version to release, with or without leading v")
	date := flag.String("date", "", "release date in YYYY-MM-DD format")
	recommend := flag.Bool("recommend", false, "print the recommended next release tag based on the changelog")
	printUnreleased := flag.Bool("print-unreleased", false, "print the current Unreleased changelog body")
	root := flag.String("root", ".", "repository root to update")
	versionFile := flag.String("version-file", "", "path to the version file, relative to --root")
	versionPattern := flag.String("version-pattern", "", "regexp with one capture group for the version value")
	changelog := flag.String("changelog", "", "path to changelog file, relative to --root")
	flag.Parse()

	absRoot, err := filepath.Abs(*root)
	if err != nil {
		fmt.Fprintf(os.Stderr, "resolve root: %v\n", err)
		os.Exit(1)
	}

	opts := vociferate.Options{
		VersionFile:    *versionFile,
		VersionPattern: *versionPattern,
		Changelog:      *changelog,
	}

	if *recommend {
		tag, err := vociferate.RecommendedTag(absRoot, opts)
		if err != nil {
			fmt.Fprintf(os.Stderr, "recommend release: %v\n", err)
			os.Exit(1)
		}
		fmt.Println(tag)
		return
	}

	if *printUnreleased {
		body, err := vociferate.UnreleasedBody(absRoot, opts)
		if err != nil {
			fmt.Fprintf(os.Stderr, "print unreleased: %v\n", err)
			os.Exit(1)
		}
		fmt.Print(body)
		return
	}

	if *version == "" || *date == "" {
		fmt.Fprintln(os.Stderr, "usage: vociferate --version <version> --date <YYYY-MM-DD> [--root <dir>] [--version-file <path>] [--version-pattern <regexp>] [--changelog <path>] | --recommend [--root <dir>] [--version-file <path>] [--version-pattern <regexp>] [--changelog <path>] | --print-unreleased [--root <dir>] [--changelog <path>]")
		os.Exit(2)
	}

	if err := vociferate.Prepare(absRoot, *version, *date, opts); err != nil {
		fmt.Fprintf(os.Stderr, "prepare release: %v\n", err)
		os.Exit(1)
	}
}