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path: root/internal/config/config.go
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package config

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

	"github.com/BurntSushi/toml"
)

type Config struct {
	DataDir          string `toml:"data_dir"`
	DBPath           string `toml:"-"`
	LogDir           string `toml:"-"`
	ClaudeBinaryPath string `toml:"claude_binary_path"`
	GeminiBinaryPath string `toml:"gemini_binary_path"`
	MaxConcurrent    int    `toml:"max_concurrent"`
	DefaultTimeout   string `toml:"default_timeout"`
	ServerAddr       string `toml:"server_addr"`
	WebhookURL       string `toml:"webhook_url"`
	WorkspaceRoot    string `toml:"workspace_root"`
}

func Default() (*Config, error) {
	home, err := os.UserHomeDir()
	if err != nil {
		return nil, fmt.Errorf("cannot determine home directory: %w", err)
	}
	if home == "" {
		return nil, errors.New("cannot determine home directory: HOME is empty")
	}
	dataDir := filepath.Join(home, ".claudomator")
	return &Config{
		DataDir:          dataDir,
		DBPath:           filepath.Join(dataDir, "claudomator.db"),
		LogDir:           filepath.Join(dataDir, "executions"),
		ClaudeBinaryPath: "claude",
		GeminiBinaryPath: "gemini",
		MaxConcurrent:    3,
		DefaultTimeout:   "15m",
		ServerAddr:       ":8484",
		WorkspaceRoot:    "/workspace",
	}, nil
}

// LoadFile loads a TOML config file on top of the defaults.
// Fields not present in the file retain their default values.
func LoadFile(path string) (*Config, error) {
	cfg, err := Default()
	if err != nil {
		return nil, err
	}
	if _, err := toml.DecodeFile(path, cfg); err != nil {
		return nil, fmt.Errorf("loading config file %q: %w", path, err)
	}
	return cfg, nil
}

// EnsureDirs creates the data directory structure.
func (c *Config) EnsureDirs() error {
	for _, dir := range []string{c.DataDir, c.LogDir} {
		if err := os.MkdirAll(dir, 0700); err != nil {
			return err
		}
	}
	return nil
}