shrug

src/interfaces/JournalInterface.js

@@ -1,4 +1,5 @@
 const EventEmitter = require('events')
+const { app } = require('electron')
 const fs = require('fs')
 const path = require('path')
 const max = require('lodash/max')
@@ -8,39 +9,40 @@ const lineReader = require('reverse-line-reader')
 const chokidar = require('chokidar')
 const Tail = require('tail').Tail
 
+// set log() to console.log() so whenever I get around to setting up a log file, I don't have to
+// search and replace all the console.log()'s
+const log = console.log.bind(console)
+
 export class JournalInterface extends EventEmitter {
     constructor() {
         super()
 
-        // this.journalDir = os.homedir() + 'Saved Games\\Frontier Developments\\Elite Dangerous'
+        this.journalDir = null
-        this.journalDir = "/mnt/c/Users/marle/Saved\ Games/Frontier\ Developments/Elite\ Dangerous/"
+        if (!app.isPackaged) { // account for WSL during development
+            this.journalDir = "/mnt/c/Users/marle/Saved\ Games/Frontier\ Developments/Elite\ Dangerous/"
+        } else if (os.platform() === 'win32') { // windows
+            this.journalDir = os.homedir() + '\\Saved Games\\Frontier Developments\\Elite Dangerous'
+        } else if (os.platform() === 'linux') { // linux
+            this.journalDir = os.homedir() + '/.local/share/Steam/steamapps/compatdata/359320/pfx/drive_c/users/steamuser/Saved Games/Frontier Developments/Elite Dangerous/'
+        } else {
+            log(`ERROR: Journal files not found. OS: ${os.platform()}.`)
+        }
+
         this.journalPattern = this.journalDir + "Journal.*.log"
 
-        this.current = this.getLatestJournal()
+        this.currentJournal = this.getLatestJournal()
 
+        // lineReader seems to be async, so start async processes here
         this.currentLocation = null
+        this.currentSystemBodies = null
 
-        console.log('JournalInterface initialized. Attempting to find current location.')
+        log('JournalInterface initialized. Attempting to find current location.')
         this.getCurrentLocation()
-    }
+        .then(() => {
-
+            log('Attempting to find scanned bodies in current system.')
-    async getCurrentLocation() {
+            this.getScannedBodies()
-        lineReader.eachLine(this.current, (raw, last) => {            
-            if (raw) {
-                const line = JSON.parse(raw)
-
-                if (line.event === 'FSDJump') {
-                    this.currentLocation = line.StarSystem
-                    return false
-                } else if (last) {
-                    console.log('Error: unable to find last hyperspace jump. Current location unknown.')
-                    return false
-                }
-            }
-        }).then(() => {
-            this.emit('FSDJump')
-            console.log(`Current location set to ${this.currentLocation}.`)
         })
+
     }
 
     // https://stackoverflow.com/questions/15696218/get-the-most-recent-file-in-a-directory-node-js
@@ -52,17 +54,60 @@ export class JournalInterface extends EventEmitter {
             return fs.statSync(fullPath).mtime
         })
 
-        console.log('New journal file found, now watching ' + path.basename(this.current))
+        log(`New journal file found, now watching ${path.basename(this.currentJournal)}.`)
     }
 
+    // get current location on setup, so if app is restarted, user can pick up where they left off
+    // rather than waiting til they jump to the next system to use the program again
+    async getCurrentLocation() {
+        lineReader.eachLine(this.currentJournal, (raw, last) => {            
+            if (raw) { // skip blank line at end of file
+                const line = JSON.parse(raw)
+
+                if (line.event === 'FSDJump') {
+                    this.currentLocation = line.StarSystem
+                    return false
+                } else if (last) {
+                    log('Warning: unable to find last hyperspace jump. Current location unknown.')
+                    return false
+                }
+            }
+        }).then(() => {
+            this.emit('FSDJump')
+            log(`Current location set to ${this.currentLocation}.`)
+        })
+    }
+
+    // look for all scanned bodies before last FSDJump, for same reasons as getCurrentLocation()
+    // if ScanType = Detailed, look at line immediately above for event = SAAScanComplete?
+    async getScannedBodies() {
+        const detailedScanLine = null
+
+        lineReader.eachLine(this.currentJournal, (raw, last) => {
+            if (raw) { // skip blank line at end of file
+                const line = JSON.parse(raw)
+
+                if (line.event === 'Scan') {
+                    if (line.ScanType === 'Detailed') {
+                        detailedScanLine = line
+                    }
+                }
+            }
+        })
+    }
+
+    // set up journal directory watcher to catch new journal files as the game seems to sometimes
+    // make more than one journal per day
+    // also for instances where UTC day switches over mid-play session
     watchDirectory() {
         const watcher = chokidar.watch(this.journalPattern, {usePolling: true, persistent: true})
         
-        watcher.on('add', newFile => this.current = this.getLatestJournal())
+        watcher.on('add', newFile => this.currentJournal = this.getLatestJournal())
 
-        console.log('Watching journal folder for changes...')
+        log('Watching journal folder for changes...')
     }
 
+    // parse and handle journal lines
     parseLine(raw) {
         const line = JSON.parse(raw)
         
@@ -72,10 +117,11 @@ export class JournalInterface extends EventEmitter {
         }
     }
 
-    watch() {
+    // watch the journal for changes
-        const tail = new Tail(this.current, {useWatchFile: true})
+    watchJournal() {
+        const tail = new Tail(this.currentJournal, {useWatchFile: true})
 
-        console.log(`Watching ${path.basename(this.current)}...`)
+        log(`Watching ${path.basename(this.currentJournal)}...`)
 
         tail.on('line', data => this.parseLine(data))
         tail.on('error', err => console.log(err))

src/renderer.js

@@ -36,15 +36,20 @@ createApp({
     setup() {
         const journal = new JournalInterface
 
+        // TODO: show warning to user
+        if (journal.journalDir === null) {
+            return
+        }
+
         journal.watchDirectory()
-        journal.watch()
+        journal.watchJournal()
 
         const currentLocation = ref('Unknown')
 
         journal.on('FSDJump', () => currentLocation.value = journal.currentLocation)
 
         return {
-            currentLocation
+            currentLocation,
         }
     }
 }).mount('#app')