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eslint-disable no-use-before-define */\nimport Logger from 'nightingale';\nimport { runAsyncAsUser, runSyncAsUser } from '../utils/exec';\nimport availableDisplays, { webBrowsers } from '../utils/availableDisplays';\n\nconst logger = new Logger('app:commands:display');\n\nlet currentDisplay;\nlet currentUrl;\nlet displayProcess;\nlet unclutterProcess;\n\nconst isBrowser = display => webBrowsers.includes(display);\nexport const supports = (display = currentDisplay) => availableDisplays.includes(display);\n\nexport const refresh = () => {\n if (displayProcess) {\n logger.log('refresh');\n return runSyncAsUser(`./${currentDisplay}.sh`, ['refresh']);\n } else {\n logger.warn('display stopped');\n }\n};\n\nexport const update = (config: Object, autoStart = true) => {\n logger.info('update');\n\n if (config.display !== currentDisplay) {\n if (autoStart) stop();\n currentDisplay = config.display;\n currentUrl = config.url;\n if (autoStart) return start();\n } else if (config.url !== currentUrl) {\n if (autoStart) stop(true);\n currentUrl = config.url;\n if (autoStart) return start();\n }\n};\n\nconst startDisplay = () => {\n logger.info('starting child');\n if (displayProcess) {\n throw new Error('child process already started');\n }\n\n logger.info('start', { display: currentDisplay, url: currentUrl });\n displayProcess = runAsyncAsUser(`./${currentDisplay}.sh`, ['start', currentUrl]);\n const thisDisplayProcess = displayProcess;\n displayProcess.on('exit', (code, signal) => {\n const currentDisplayProcess = displayProcess;\n const sameChildProcess = () => thisDisplayProcess === currentDisplayProcess;\n displayProcess = null;\n logger.error('child process exited', { code, signal });\n if (sameChildProcess()) {\n process.nextTick(() => {\n if (sameChildProcess()) start();\n });\n }\n });\n\n if (!unclutterProcess) {\n const unclutterIdle = isBrowser(currentDisplay) ? 5 : 0;\n unclutterProcess = runAsyncAsUser('unclutter', ['-display', ':0', '-idle', unclutterIdle]);\n unclutterProcess.on('exit', (code, signal) => {\n logger.info('unclutter exited', { code, signal });\n unclutterProcess = null;\n });\n }\n};\n\nexport const openboxStarted = () => {\n logger.success('openbox started');\n startDisplay();\n};\n\nexport const start = () => {\n if (displayProcess) {\n logger.warn('start: already started');\n return;\n }\n\n if (!supports(currentDisplay)) return;\n\n logger.info('starting...', { display: currentDisplay });\n\n // } else if (startOpenBox() !== 'started') {\n // logger.info('openbox not yet started');\n // } else {\n startDisplay();\n // }\n};\n\nexport const restart = () => {\n logger.info('restarting...');\n stop(true);\n return start();\n};\n\nconst kill = process => {\n process.removeAllListeners();\n process.kill();\n return null;\n};\n\nexport const stop = (onlyDisplay: ?boolean = false) => {\n logger.info('stop', { display: currentDisplay });\n\n if (displayProcess) displayProcess = kill(displayProcess);\n if (!onlyDisplay && unclutterProcess) unclutterProcess = kill(unclutterProcess);\n\n runSyncAsUser('./display.sh', ['stop']);\n\n if (currentDisplay === 'omxplayer') {\n runSyncAsUser('./display.sh', ['restart']);\n runSyncAsUser('./screen.sh', ['waitForX']);\n }\n};\n"]} |