| 1 | package be.nikiroo.fanfix; |
| 2 | |
| 3 | import java.io.File; |
| 4 | import java.io.IOException; |
| 5 | import java.util.Date; |
| 6 | |
| 7 | import be.nikiroo.fanfix.bundles.Config; |
| 8 | import be.nikiroo.fanfix.bundles.ConfigBundle; |
| 9 | import be.nikiroo.fanfix.bundles.StringIdBundle; |
| 10 | import be.nikiroo.fanfix.bundles.UiConfig; |
| 11 | import be.nikiroo.fanfix.bundles.UiConfigBundle; |
| 12 | import be.nikiroo.fanfix.library.BasicLibrary; |
| 13 | import be.nikiroo.fanfix.library.LocalLibrary; |
| 14 | import be.nikiroo.fanfix.output.BasicOutput.OutputType; |
| 15 | import be.nikiroo.utils.IOUtils; |
| 16 | import be.nikiroo.utils.resources.Bundles; |
| 17 | |
| 18 | /** |
| 19 | * Global state for the program (services and singletons). |
| 20 | * |
| 21 | * @author niki |
| 22 | */ |
| 23 | public class Instance { |
| 24 | /** |
| 25 | * A handler when a recoverable exception was caught by the program. |
| 26 | * |
| 27 | * @author niki |
| 28 | */ |
| 29 | public interface SyserrHandler { |
| 30 | /** |
| 31 | * An exception happened, log it. |
| 32 | * |
| 33 | * @param e |
| 34 | * the exception |
| 35 | * @param showDetails |
| 36 | * show more details (usually equivalent to the value of |
| 37 | * DEBUG) |
| 38 | */ |
| 39 | public void notify(Exception e, boolean showDetails); |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * A handler when a trace message is sent. |
| 44 | * |
| 45 | * @author niki |
| 46 | */ |
| 47 | public interface TraceHandler { |
| 48 | /** |
| 49 | * A trace happened, show it. |
| 50 | * <p> |
| 51 | * Will only be called if TRACE is true. |
| 52 | * |
| 53 | * @param message |
| 54 | * the trace message |
| 55 | */ |
| 56 | public void trace(String message); |
| 57 | } |
| 58 | |
| 59 | private static ConfigBundle config; |
| 60 | private static UiConfigBundle uiconfig; |
| 61 | private static StringIdBundle trans; |
| 62 | private static Cache cache; |
| 63 | private static LocalLibrary lib; |
| 64 | private static boolean debug; |
| 65 | private static boolean trace; |
| 66 | private static File coverDir; |
| 67 | private static File readerTmp; |
| 68 | private static File remoteDir; |
| 69 | private static String configDir; |
| 70 | |
| 71 | private static SyserrHandler syserrHandler; |
| 72 | |
| 73 | private static TraceHandler traceHandler; |
| 74 | |
| 75 | static { |
| 76 | // Most of the rest is dependent upon this: |
| 77 | config = new ConfigBundle(); |
| 78 | |
| 79 | configDir = System.getProperty("CONFIG_DIR"); |
| 80 | if (configDir == null) { |
| 81 | configDir = System.getenv("CONFIG_DIR"); |
| 82 | } |
| 83 | |
| 84 | if (configDir == null) { |
| 85 | configDir = new File(System.getProperty("user.home"), ".fanfix") |
| 86 | .getPath(); |
| 87 | } |
| 88 | |
| 89 | if (!new File(configDir).exists()) { |
| 90 | new File(configDir).mkdirs(); |
| 91 | } else { |
| 92 | Bundles.setDirectory(configDir); |
| 93 | } |
| 94 | |
| 95 | try { |
| 96 | config = new ConfigBundle(); |
| 97 | config.updateFile(configDir); |
| 98 | } catch (IOException e) { |
| 99 | syserr(e); |
| 100 | } |
| 101 | try { |
| 102 | uiconfig = new UiConfigBundle(); |
| 103 | uiconfig.updateFile(configDir); |
| 104 | } catch (IOException e) { |
| 105 | syserr(e); |
| 106 | } |
| 107 | try { |
| 108 | trans = new StringIdBundle(getLang()); |
| 109 | trans.updateFile(configDir); |
| 110 | } catch (IOException e) { |
| 111 | syserr(e); |
| 112 | } |
| 113 | |
| 114 | Bundles.setDirectory(configDir); |
| 115 | |
| 116 | uiconfig = new UiConfigBundle(); |
| 117 | trans = new StringIdBundle(getLang()); |
| 118 | try { |
| 119 | lib = new LocalLibrary(getFile(Config.LIBRARY_DIR), |
| 120 | OutputType.INFO_TEXT, OutputType.CBZ); |
| 121 | } catch (Exception e) { |
| 122 | syserr(new IOException("Cannot create library for directory: " |
| 123 | + getFile(Config.LIBRARY_DIR), e)); |
| 124 | } |
| 125 | |
| 126 | debug = Instance.getConfig().getBoolean(Config.DEBUG_ERR, false); |
| 127 | trace = Instance.getConfig().getBoolean(Config.DEBUG_TRACE, false); |
| 128 | coverDir = getFile(Config.DEFAULT_COVERS_DIR); |
| 129 | File tmp = getFile(Config.CACHE_DIR); |
| 130 | readerTmp = getFile(UiConfig.CACHE_DIR_LOCAL_READER); |
| 131 | remoteDir = new File(getFile(Config.LIBRARY_DIR), "remote"); |
| 132 | |
| 133 | if (checkEnv("NOUTF")) { |
| 134 | trans.setUnicode(false); |
| 135 | } |
| 136 | |
| 137 | if (checkEnv("DEBUG")) { |
| 138 | debug = true; |
| 139 | } |
| 140 | |
| 141 | // Could have used: System.getProperty("java.io.tmpdir") |
| 142 | if (tmp == null) { |
| 143 | tmp = new File(configDir, "tmp"); |
| 144 | } |
| 145 | if (readerTmp == null) { |
| 146 | readerTmp = new File(configDir, "tmp-reader"); |
| 147 | } |
| 148 | // |
| 149 | |
| 150 | if (coverDir != null && !coverDir.exists()) { |
| 151 | syserr(new IOException( |
| 152 | "The 'default covers' directory does not exists: " |
| 153 | + coverDir)); |
| 154 | coverDir = null; |
| 155 | } |
| 156 | |
| 157 | try { |
| 158 | String ua = config.getString(Config.USER_AGENT); |
| 159 | int hours = config.getInteger(Config.CACHE_MAX_TIME_CHANGING, -1); |
| 160 | int hoursLarge = config |
| 161 | .getInteger(Config.CACHE_MAX_TIME_STABLE, -1); |
| 162 | |
| 163 | cache = new Cache(tmp, ua, hours, hoursLarge); |
| 164 | } catch (IOException e) { |
| 165 | syserr(new IOException( |
| 166 | "Cannot create cache (will continue without cache)", e)); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Get the (unique) configuration service for the program. |
| 172 | * |
| 173 | * @return the configuration service |
| 174 | */ |
| 175 | public static ConfigBundle getConfig() { |
| 176 | return config; |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Get the (unique) UI configuration service for the program. |
| 181 | * |
| 182 | * @return the configuration service |
| 183 | */ |
| 184 | public static UiConfigBundle getUiConfig() { |
| 185 | return uiconfig; |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Get the (unique) {@link Cache} for the program. |
| 190 | * |
| 191 | * @return the {@link Cache} |
| 192 | */ |
| 193 | public static Cache getCache() { |
| 194 | return cache; |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Get the (unique) {link StringIdBundle} for the program. |
| 199 | * |
| 200 | * @return the {link StringIdBundle} |
| 201 | */ |
| 202 | public static StringIdBundle getTrans() { |
| 203 | return trans; |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Get the (unique) {@link LocalLibrary} for the program. |
| 208 | * |
| 209 | * @return the {@link LocalLibrary} |
| 210 | */ |
| 211 | public static BasicLibrary getLibrary() { |
| 212 | return lib; |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Return the directory where to look for default cover pages. |
| 217 | * |
| 218 | * @return the default covers directory |
| 219 | */ |
| 220 | public static File getCoverDir() { |
| 221 | return coverDir; |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Return the directory where to store temporary files for the local reader. |
| 226 | * |
| 227 | * @return the directory |
| 228 | */ |
| 229 | public static File getReaderDir() { |
| 230 | return readerTmp; |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * Return the directory where to store temporary files for the remote |
| 235 | * {@link LocalLibrary}. |
| 236 | * |
| 237 | * @param host |
| 238 | * the remote for this host |
| 239 | * |
| 240 | * @return the directory |
| 241 | */ |
| 242 | public static File getRemoteDir(String host) { |
| 243 | remoteDir.mkdirs(); |
| 244 | |
| 245 | if (host != null) { |
| 246 | return new File(remoteDir, host); |
| 247 | } |
| 248 | |
| 249 | return remoteDir; |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * Check if we need to check that a new version of Fanfix is available. |
| 254 | * |
| 255 | * @return TRUE if we need to |
| 256 | */ |
| 257 | public static boolean isVersionCheckNeeded() { |
| 258 | try { |
| 259 | long wait = config.getInteger(Config.UPDATE_INTERVAL, 1) * 24 * 60 |
| 260 | * 60 * 1000; |
| 261 | if (wait >= 0) { |
| 262 | String lastUpString = IOUtils.readSmallFile(new File(configDir, |
| 263 | "LAST_UPDATE")); |
| 264 | long delay = new Date().getTime() |
| 265 | - Long.parseLong(lastUpString); |
| 266 | if (delay > wait) { |
| 267 | return true; |
| 268 | } |
| 269 | } else { |
| 270 | return false; |
| 271 | } |
| 272 | } catch (Exception e) { |
| 273 | // No file or bad file: |
| 274 | return true; |
| 275 | } |
| 276 | |
| 277 | return false; |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * Notify that we checked for a new version of Fanfix. |
| 282 | */ |
| 283 | public static void setVersionChecked() { |
| 284 | try { |
| 285 | IOUtils.writeSmallFile(new File(configDir), "LAST_UPDATE", |
| 286 | Long.toString(new Date().getTime())); |
| 287 | } catch (IOException e) { |
| 288 | syserr(e); |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | * Replace the global syserr handler. |
| 294 | * |
| 295 | * @param syserrHandler |
| 296 | * the new syserr handler |
| 297 | */ |
| 298 | public static void setSyserrHandler(SyserrHandler syserrHandler) { |
| 299 | Instance.syserrHandler = syserrHandler; |
| 300 | } |
| 301 | |
| 302 | /** |
| 303 | * Replace the global trace handler. |
| 304 | * |
| 305 | * @param traceHandler |
| 306 | * the new trace handler |
| 307 | */ |
| 308 | public static void setTraceHandler(TraceHandler traceHandler) { |
| 309 | Instance.traceHandler = traceHandler; |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * Report an error to the user |
| 314 | * |
| 315 | * @param e |
| 316 | * the {@link Exception} to report |
| 317 | */ |
| 318 | public static void syserr(Exception e) { |
| 319 | if (syserrHandler != null) { |
| 320 | syserrHandler.notify(e, debug); |
| 321 | } else { |
| 322 | if (debug) { |
| 323 | e.printStackTrace(); |
| 324 | } else { |
| 325 | System.err.println(e.getMessage()); |
| 326 | } |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | /** |
| 331 | * Notify of a debug message. |
| 332 | * |
| 333 | * @param message |
| 334 | * the message |
| 335 | */ |
| 336 | public static void trace(String message) { |
| 337 | if (trace) { |
| 338 | if (traceHandler != null) { |
| 339 | traceHandler.trace(message); |
| 340 | } else { |
| 341 | System.out.println(message); |
| 342 | } |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | /** |
| 347 | * Return a path, but support the special $HOME variable. |
| 348 | * |
| 349 | * @return the path |
| 350 | */ |
| 351 | private static File getFile(Config id) { |
| 352 | return getFile(config.getString(id)); |
| 353 | } |
| 354 | |
| 355 | /** |
| 356 | * Return a path, but support the special $HOME variable. |
| 357 | * |
| 358 | * @return the path |
| 359 | */ |
| 360 | private static File getFile(UiConfig id) { |
| 361 | return getFile(uiconfig.getString(id)); |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Return a path, but support the special $HOME variable. |
| 366 | * |
| 367 | * @return the path |
| 368 | */ |
| 369 | private static File getFile(String path) { |
| 370 | File file = null; |
| 371 | if (path != null && !path.isEmpty()) { |
| 372 | path = path.replace('/', File.separatorChar); |
| 373 | if (path.contains("$HOME")) { |
| 374 | path = path.replace("$HOME", |
| 375 | "" + System.getProperty("user.home")); |
| 376 | } |
| 377 | |
| 378 | file = new File(path); |
| 379 | } |
| 380 | |
| 381 | return file; |
| 382 | } |
| 383 | |
| 384 | /** |
| 385 | * The language to use for the application (NULL = default system language). |
| 386 | * |
| 387 | * @return the language |
| 388 | */ |
| 389 | private static String getLang() { |
| 390 | String lang = config.getString(Config.LANG); |
| 391 | |
| 392 | if (System.getenv("LANG") != null && !System.getenv("LANG").isEmpty()) { |
| 393 | lang = System.getenv("LANG"); |
| 394 | } |
| 395 | |
| 396 | if (lang != null && lang.isEmpty()) { |
| 397 | lang = null; |
| 398 | } |
| 399 | |
| 400 | return lang; |
| 401 | } |
| 402 | |
| 403 | /** |
| 404 | * Check that the given environment variable is "enabled". |
| 405 | * |
| 406 | * @param key |
| 407 | * the variable to check |
| 408 | * |
| 409 | * @return TRUE if it is |
| 410 | */ |
| 411 | private static boolean checkEnv(String key) { |
| 412 | String value = System.getenv(key); |
| 413 | if (value != null) { |
| 414 | value = value.trim().toLowerCase(); |
| 415 | if ("yes".equals(value) || "true".equals(value) |
| 416 | || "on".equals(value) || "1".equals(value) |
| 417 | || "y".equals(value)) { |
| 418 | return true; |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | return false; |
| 423 | } |
| 424 | } |