fj/internal/config/config.go

package config

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

	"github.com/spf13/viper"
	"gopkg.in/yaml.v3"
)

type Config struct {
	Hosts map[string]HostConfig `yaml:"hosts"`
}

type HostConfig struct {
	Hostname    string `yaml:"hostname"`
	Token       string `yaml:"token"`
	User        string `yaml:"user,omitempty"`
	GitProtocol string `yaml:"git_protocol,omitempty"`
}

func GetConfigDir() (string, error) {
	home, err := os.UserHomeDir()
	if err != nil {
		return "", err
	}
	return filepath.Join(home, ".config", "fgj"), nil
}

func GetConfigPath() (string, error) {
	dir, err := GetConfigDir()
	if err != nil {
		return "", err
	}
	return filepath.Join(dir, "config.yaml"), nil
}

func Load() (*Config, error) {
	path, err := GetConfigPath()
	if err != nil {
		return nil, err
	}
	return LoadFromPath(path)
}

func LoadFromPath(path string) (*Config, error) {
	data, err := os.ReadFile(path)
	if err != nil {
		if os.IsNotExist(err) {
			return &Config{Hosts: make(map[string]HostConfig)}, nil
		}
		return nil, err
	}

	var cfg Config
	if err := yaml.Unmarshal(data, &cfg); err != nil {
		return nil, err
	}

	if cfg.Hosts == nil {
		cfg.Hosts = make(map[string]HostConfig)
	}

	return &cfg, nil
}

func (c *Config) Save() error {
	path, err := GetConfigPath()
	if err != nil {
		return err
	}
	return c.SaveToPath(path)
}

func (c *Config) SaveToPath(path string) error {
	dir := filepath.Dir(path)
	if err := os.MkdirAll(dir, 0755); err != nil {
		return err
	}

	data, err := yaml.Marshal(c)
	if err != nil {
		return err
	}

	return os.WriteFile(path, data, 0600)
}

// GetHost resolves the hostname to use for API client creation.
// Priority order:
// 1. Explicitly provided hostname parameter
// 2. CLI flag (--hostname)
// 3. Environment variable (FGJ_HOST)
// 4. Auto-detected hostname from git remote
// 5. Default to codeberg.org
func (c *Config) GetHost(hostname string, detectedHost string) (HostConfig, error) {
	if hostname == "" {
		hostname = viper.GetString("hostname")
	}

	if hostname == "" {
		hostname = os.Getenv("FGJ_HOST")
	}

	if hostname == "" {
		hostname = detectedHost
	}

	if hostname == "" {
		hostname = "codeberg.org"
	}

	host, ok := c.Hosts[hostname]
	if !ok {
		return HostConfig{}, fmt.Errorf("no configuration found for host %s", hostname)
	}

	return host, nil
}

func (c *Config) SetHost(hostname string, host HostConfig) {
	if c.Hosts == nil {
		c.Hosts = make(map[string]HostConfig)
	}
	c.Hosts[hostname] = host
}