Add exportMap

Author: tiennou

lib/services/importMap/utils.js

@@ -164,6 +164,49 @@ const getMapFromFile = async (filePath) => {
   return rooms
 }
 
+const exportMap = async (config) => {
+  const { common: { storage: { env, db } } } = config
+  if (!config.mongo) {
+    throw new Error('screepsmod-mongo required for map imports')
+  }
+  log('Exporting map')
+
+  // We want to pause the server just in case
+  const wasPaused = await env.get(env.keys.MAIN_LOOP_PAUSED)
+  if (!wasPaused) {
+    await env.set(env.keys.MAIN_LOOP_PAUSED, '1')
+  }
+
+  const roomNames = (await db.rooms.find({}, { _id: true })).map(r => r._id)
+  const shard = await env.get(env.keys.SHARD_NAME)
+  const date = new Date()
+  const desc = `${shard}:${date.getUTCFullYear()}-${date.getUTCMonth()}`
+  let count = 0
+  const allowedObjTypes = ['controller', 'source', 'mineral', 'extractor', 'keeperLair']
+  const objectOrTypeSpec = allowedObjTypes.map(t => ({ type: t }))
+  const rooms = await Promise.all(roomNames.map(async (roomName) => {
+    const roomData = await db.rooms.findOne({ _id: roomName }, { projection: { _id: false } })
+    const objects = await db['rooms.objects'].find({ room: roomName, $or: objectOrTypeSpec })
+    const terrain = await db['rooms.terrain'].findOne({ room: roomName })
+    const room = {
+      room: roomName,
+      terrain: terrain.terrain,
+      objects: objects
+    }
+    Object.assign(room, roomData)
+    count++
+    return room
+  }))
+
+  const fileName = path.join(process.env.ASSET_DIR, `mapExport-${Number(date)}.json`)
+  await fs.writeFile(fileName, JSON.stringify({ description: desc, rooms }))
+
+  if (!wasPaused) {
+    await env.set(env.keys.MAIN_LOOP_PAUSED, '0')
+  }
+  return logResult(`Exported ${count} rooms to ${fileName}`)
+}
+
 module.exports = (config) => {
   Object.assign(config.utils, {
     async importMap (urlOrMapId) {
@@ -177,6 +220,9 @@ module.exports = (config) => {
       const rooms = await getMapFromFile(filePath)
       await loadRooms(config, filePath, rooms)
       return logFinish()
+    },
+    async exportMap () {
+      return exportMap(config)
     }
   })
 
@@ -185,4 +231,7 @@ module.exports = (config) => {
 
   config.utils.importMapFile._help =
     'importMapFile(filePath) - import a map from a json file'
+
+  config.utils.exportMap._help =
+  'exportMapFile(filePath) - export the map to a json file'
 }