package main

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

// Config holds the runtime configuration for the DAG engine.
type Config struct {
	Port          int
	DagsDir       string
	DBPath        string
	AutoScheduler bool
}

// DefaultConfig returns sensible defaults.
func DefaultConfig() Config {
	home, _ := os.UserHomeDir()
	return Config{
		Port:    8090,
		DagsDir: filepath.Join(home, "dagu", "dags"),
		DBPath:  "dag_engine.db",
	}
}

// ParseFlags populates config from CLI flags for the "server" subcommand.
func (c *Config) ParseFlags(fs *flag.FlagSet, args []string) error {
	fs.IntVar(&c.Port, "port", c.Port, "HTTP server port")
	fs.StringVar(&c.DagsDir, "dags-dir", c.DagsDir, "directory containing DAG YAML files")
	fs.StringVar(&c.DBPath, "db", c.DBPath, "path to SQLite database")
	fs.BoolVar(&c.AutoScheduler, "scheduler", c.AutoScheduler, "auto-start cron scheduler")
	return fs.Parse(args)
}