1package bible
  2
  3import (
  4	"fmt"
  5	"os"
  6	"path/filepath"
  7
  8	"github.com/adrg/xdg"
  9	"github.com/spf13/viper"
 10)
 11
 12// findBibleFileInDataDir looks for Bible JSON files in the XDG data directory
 13// It returns the path to the first JSON file found, or an error if none found
 14func findBibleFileInDataDir() (string, error) {
 15	dataDir := filepath.Join(xdg.DataHome, "bibel")
 16	
 17	// Check if the directory exists
 18	if _, err := os.Stat(dataDir); os.IsNotExist(err) {
 19		return "", fmt.Errorf("Bible data directory not found: %s\nPlease create this directory and add Bible JSON files to it", dataDir)
 20	}
 21
 22	// Read the directory
 23	entries, err := os.ReadDir(dataDir)
 24	if err != nil {
 25		return "", fmt.Errorf("error reading Bible data directory %s: %w", dataDir, err)
 26	}
 27
 28	// Look for JSON files
 29	for _, entry := range entries {
 30		if !entry.IsDir() && filepath.Ext(entry.Name()) == ".json" {
 31			return filepath.Join(dataDir, entry.Name()), nil
 32		}
 33	}
 34
 35	return "", fmt.Errorf("no JSON Bible files found in %s\nPlease add Bible JSON files to this directory", dataDir)
 36}
 37
 38// Config represents the application configuration
 39type Config struct {
 40	// Reading mode: "evangelion", "new_testament", "old_testament", "bible"
 41	ReadingMode string `toml:"reading_mode" mapstructure:"reading_mode"`
 42	// Output mode: "tui", "formatted", "plain"
 43	OutputMode string `toml:"output_mode" mapstructure:"output_mode"`
 44
 45	// Bible data file path (default: "books/pol_nbg.json")
 46	BiblePath string `toml:"bible_path" mapstructure:"bible_path"`
 47
 48	// TUI settings
 49	TUI struct {
 50		// Whether to show quit message (default: true)
 51		ShowQuitMessage bool `toml:"show_quit_message" mapstructure:"show_quit_message"`
 52
 53		// Box border style: "rounded", "double", "single", "hidden"
 54		BorderStyle string `toml:"border_style" mapstructure:"border_style"`
 55
 56		// Box border colour (default: adaptive to terminal)
 57		BorderColour string `toml:"border_colour" mapstructure:"border_colour"`
 58
 59		// Header colour (default: adaptive to terminal)
 60		HeaderColour string `toml:"header_colour" mapstructure:"header_colour"`
 61
 62		// Text colour (default: adaptive to terminal)
 63		TextColour string `toml:"text_colour" mapstructure:"text_colour"`
 64
 65		// Quit message colour (default: adaptive to terminal)
 66		QuitColour string `toml:"quit_colour" mapstructure:"quit_colour"`
 67	} `toml:"tui" mapstructure:"tui"`
 68
 69	// Formatter settings
 70	Formatter struct {
 71		// Whether to use ANSI colours in formatted mode (default: true)
 72		UseColours bool `toml:"use_colours" mapstructure:"use_colours"`
 73
 74		// Header format template (default: "{book} {chapter}\nw. {first_verse}-{second_verse}")
 75		HeaderFormat string `toml:"header_format" mapstructure:"header_format"`
 76
 77		// Whether to print each verse on a numbered line (default: false)
 78		Numbered bool `toml:"numbered" mapstructure:"numbered"`
 79
 80		// Whether to render pilcrows (¶) as blank lines instead of ignoring them (default: false)
 81		Paragraphs bool `toml:"paragraphs" mapstructure:"paragraphs"`
 82	} `toml:"formatter" mapstructure:"formatter"`
 83
 84	// Date progression settings
 85	DateProgression struct {
 86		// Verses per day (default: 12)
 87		VersesPerDay int `toml:"verses_per_day" mapstructure:"verses_per_day"`
 88
 89		// Start date for progression (default: "1 January" of current year)
 90		StartDate string `toml:"start_date" mapstructure:"start_date"`
 91	} `toml:"date_progression" mapstructure:"date_progression"`
 92}
 93
 94// DefaultConfig returns a configuration with default values
 95func DefaultConfig() *Config {
 96	cfg := &Config{
 97		ReadingMode: "evangelion",
 98		OutputMode: "tui",
 99		BiblePath:  "", // Empty means use XDG data directory
100	}
101
102	cfg.TUI.ShowQuitMessage = true
103	cfg.TUI.BorderStyle = "rounded"
104	cfg.TUI.BorderColour = "" // Empty means adaptive
105	cfg.TUI.HeaderColour = "" // Empty means adaptive
106	cfg.TUI.TextColour = ""   // Empty means adaptive
107	cfg.TUI.QuitColour = ""   // Empty means adaptive
108
109	cfg.Formatter.UseColours = true
110	cfg.Formatter.HeaderFormat = "{book} {chapter}\nw. {first_verse}-{second_verse}"
111	cfg.Formatter.Numbered = false
112	cfg.Formatter.Paragraphs = false
113
114	cfg.DateProgression.VersesPerDay = 12
115	cfg.DateProgression.StartDate = "" // Empty means 1 January of current year
116
117	return cfg
118}
119
120// LoadConfig loads configuration from file and environment
121func LoadConfig() (*Config, error) {
122	// Set up viper
123	viper.SetConfigName("config") // Name of config file (without extension)
124	viper.SetConfigType("toml")   // REQUIRED if the config file does not have the extension in the name
125
126	// Add XDG config paths
127	configPath := filepath.Join(xdg.ConfigHome, "bibel")
128	viper.AddConfigPath(configPath)
129
130	// Also check current directory for local config
131	viper.AddConfigPath(".")
132
133	// Set defaults
134	defaultCfg := DefaultConfig()
135	viper.SetDefault("reading_mode", defaultCfg.ReadingMode)
136	viper.SetDefault("output_mode", defaultCfg.OutputMode)
137	viper.SetDefault("bible_path", defaultCfg.BiblePath)
138	viper.SetDefault("tui.show_quit_message", defaultCfg.TUI.ShowQuitMessage)
139	viper.SetDefault("tui.border_style", defaultCfg.TUI.BorderStyle)
140	viper.SetDefault("tui.border_colour", defaultCfg.TUI.BorderColour)
141	viper.SetDefault("tui.header_colour", defaultCfg.TUI.HeaderColour)
142	viper.SetDefault("tui.text_colour", defaultCfg.TUI.TextColour)
143	viper.SetDefault("tui.quit_colour", defaultCfg.TUI.QuitColour)
144	viper.SetDefault("formatter.use_colours", defaultCfg.Formatter.UseColours)
145	viper.SetDefault("formatter.header_format", defaultCfg.Formatter.HeaderFormat)
146	viper.SetDefault("formatter.numbered", defaultCfg.Formatter.Numbered)
147	viper.SetDefault("formatter.paragraphs", defaultCfg.Formatter.Paragraphs)
148	viper.SetDefault("date_progression.verses_per_day", defaultCfg.DateProgression.VersesPerDay)
149	viper.SetDefault("date_progression.start_date", defaultCfg.DateProgression.StartDate)
150
151	// Read in config file (if it exists)
152	if err := viper.ReadInConfig(); err != nil {
153		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
154			// Config file not found; we'll use defaults
155			fmt.Fprintf(os.Stderr, "Note: No configuration file found at %s/config.toml\n", configPath)
156			fmt.Fprintf(os.Stderr, "Using default configuration. Run 'bibel --generate-config' to create a default config file.\n")
157		} else {
158			// Config file was found but another error was produced
159			return nil, fmt.Errorf("error reading config file: %w", err)
160		}
161	}
162
163	// Unmarshal config into struct
164	var cfg Config
165	if err := viper.Unmarshal(&cfg); err != nil {
166		return nil, fmt.Errorf("error unmarshalling config: %w", err)
167	}
168
169	// Apply defaults for any empty fields
170	defaultCfg = DefaultConfig()
171	if cfg.ReadingMode == "" {
172		cfg.ReadingMode = defaultCfg.ReadingMode
173	}
174	if cfg.OutputMode == "" {
175		cfg.OutputMode = defaultCfg.OutputMode
176	}
177	if cfg.BiblePath == "" {
178		cfg.BiblePath = defaultCfg.BiblePath
179	}
180	if cfg.TUI.BorderStyle == "" {
181		cfg.TUI.BorderStyle = defaultCfg.TUI.BorderStyle
182	}
183	if cfg.DateProgression.VersesPerDay == 0 {
184		cfg.DateProgression.VersesPerDay = defaultCfg.DateProgression.VersesPerDay
185	}
186
187	// If BiblePath is still empty (default or from config), try to find a Bible file in XDG data directory
188	if cfg.BiblePath == "" {
189		biblePath, err := findBibleFileInDataDir()
190		if err != nil {
191			return nil, fmt.Errorf("failed to find Bible data file: %w", err)
192		}
193		cfg.BiblePath = biblePath
194		fmt.Fprintf(os.Stderr, "Using Bible file from XDG data directory: %s\n", cfg.BiblePath)
195	}
196
197	// Validate configuration
198	if err := cfg.Validate(); err != nil {
199		return nil, fmt.Errorf("invalid configuration: %w", err)
200	}
201
202	return &cfg, nil
203}
204
205// SaveConfig saves the configuration to file
206func SaveConfig(cfg *Config) error {
207	// Set up viper with current config
208	viper.Set("reading_mode", cfg.ReadingMode)
209	viper.Set("output_mode", cfg.OutputMode)
210	viper.Set("bible_path", cfg.BiblePath)
211	viper.Set("tui.show_quit_message", cfg.TUI.ShowQuitMessage)
212	viper.Set("tui.border_style", cfg.TUI.BorderStyle)
213	viper.Set("tui.border_colour", cfg.TUI.BorderColour)
214	viper.Set("tui.header_colour", cfg.TUI.HeaderColour)
215	viper.Set("tui.text_colour", cfg.TUI.TextColour)
216	viper.Set("tui.quit_colour", cfg.TUI.QuitColour)
217	viper.Set("formatter.use_colours", cfg.Formatter.UseColours)
218	viper.Set("formatter.header_format", cfg.Formatter.HeaderFormat)
219	viper.Set("formatter.numbered", cfg.Formatter.Numbered)
220	viper.Set("formatter.paragraphs", cfg.Formatter.Paragraphs)
221	viper.Set("date_progression.verses_per_day", cfg.DateProgression.VersesPerDay)
222	viper.Set("date_progression.start_date", cfg.DateProgression.StartDate)
223
224	// Ensure config directory exists
225	configPath := filepath.Join(xdg.ConfigHome, "bibel")
226	if err := os.MkdirAll(configPath, 0755); err != nil {
227		return fmt.Errorf("error creating config directory: %w", err)
228	}
229
230	// Write config file
231	configFile := filepath.Join(configPath, "config.toml")
232	if err := viper.WriteConfigAs(configFile); err != nil {
233		return fmt.Errorf("error writing config file: %w", err)
234	}
235
236	return nil
237}
238
239// GenerateDefaultConfig creates a default configuration file
240func GenerateDefaultConfig() error {
241	return SaveConfig(DefaultConfig())
242}
243
244// GetConfigPath returns the path to the configuration file
245
246// Validate checks if configuration values are valid
247func (c *Config) Validate() error {
248	// Validate reading mode
249	validReadingModes := map[string]bool{
250		"evangelion": true,
251		"new_testament": true,
252		"old_testament": true,
253		"bible": true,
254	}
255	// Allow empty reading mode (will use default)
256	if c.ReadingMode != "" && !validReadingModes[c.ReadingMode] {
257		return fmt.Errorf("invalid reading mode: %s, must be one of: evangelion, new_testament, old_testament, bible", c.ReadingMode)
258	}
259
260	// Validate output mode
261	validOutputModes := map[string]bool{
262		"tui":       true,
263		"formatted": true,
264		"plain":     true,
265	}
266	if !validOutputModes[c.OutputMode] {
267		return fmt.Errorf("invalid output mode: %s, must be one of: tui, formatted, plain", c.OutputMode)
268	}
269
270	// Validate TUI border style
271	validBorderStyles := map[string]bool{
272		"rounded": true,
273		"double":  true,
274		"single":  true,
275		"hidden":  true,
276	}
277	if !validBorderStyles[c.TUI.BorderStyle] {
278		return fmt.Errorf("invalid border style: %s, must be one of: rounded, double, single, hidden", c.TUI.BorderStyle)
279	}
280
281	// Validate verses per day
282	if c.DateProgression.VersesPerDay <= 0 {
283		return fmt.Errorf("verses per day must be positive, got: %d", c.DateProgression.VersesPerDay)
284	}
285
286	return nil
287}
288func GetConfigPath() string {
289	return filepath.Join(xdg.ConfigHome, "bibel", "config.toml")
290}