Add dqs cmd

cmd/dqs/config/config.go

@@ -0,0 +1,76 @@
+package config
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"time"
+
+	"code.chimeric.al/dwrz/dqs/internal/dqs/entry"
+)
+
+const (
+	defaultDir = ""
+	dirUsage   = "path to the dqs directory (default: $XDG_CONFIG_HOME/dqs)"
+
+	defaultDate = ""
+	dateUsage   = "entry date in YYYYMMDD format (default: today)"
+)
+
+type Config struct {
+	Date time.Time
+	Dir  string
+}
+
+func Get() (*Config, error) {
+	var (
+		cfg  = &Config{}
+		date string
+	)
+
+	flag.StringVar(&cfg.Dir, "dir", defaultDir, dirUsage)
+	flag.StringVar(&date, "d", defaultDate, dateUsage)
+	flag.StringVar(&date, "date", defaultDate, dateUsage)
+
+	flag.Parse()
+
+	// If unset, use the default directory.
+	if cfg.Dir == "" {
+		dir, err := DefaultDirectory()
+		if err != nil {
+			return nil, err
+		}
+
+		cfg.Dir = dir
+	}
+
+	// Parse and set the date.
+	// If unset, use the current date.
+	switch date {
+	case defaultDate:
+		now := time.Now()
+		cfg.Date = time.Date(
+			now.Year(), now.Month(), now.Day(),
+			0, 0, 0, 0, time.Local,
+		)
+	default:
+		var err error
+		cfg.Date, err = time.Parse(entry.DateFormat, date)
+		if err != nil {
+			return nil, fmt.Errorf("invalid date: %w", err)
+		}
+	}
+
+	return cfg, nil
+}
+
+func DefaultDirectory() (string, error) {
+	dir, err := os.UserConfigDir()
+	if err != nil {
+		return "", fmt.Errorf(
+			"failed to get user config dir: %w", err,
+		)
+	}
+
+	return fmt.Sprintf("%s/dqs", dir), nil
+}

cmd/dqs/main.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"flag"
+	"log/slog"
+	"os"
+
+	"code.chimeric.al/dwrz/dqs/cmd/dqs/config"
+	"code.chimeric.al/dwrz/dqs/internal/dqs"
+)
+
+func main() {
+	var log = slog.New(slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{
+		AddSource: true,
+		Level:     slog.LevelDebug,
+	}))
+
+	cfg, err := config.Get()
+	if err != nil {
+		log.Error("bad config", slog.Any("error", err))
+		os.Exit(1)
+	}
+
+	cmd, err := dqs.New(dqs.Config{Dir: cfg.Dir})
+	if err != nil {
+		log.Error("failed to initialize dqs", slog.Any("error", err))
+		os.Exit(1)
+	}
+
+	if err := cmd.Run(flag.Args(), cfg.Date); err != nil {
+		log.Error("failed", slog.Any("error", err))
+		os.Exit(1)
+	}
+}