Change how local state of the file is loaded

lib/monitor.js

@@ -36,8 +36,8 @@ module.exports = class Monitor extends ReadyResource {
     this.entry = await this.drive.entry(this.name)
     if (this.entry) this._setEntryInfo()
 
-    // load the local state for the file.
-    // upload is a bit more tricky
+    // load the local state of the file.
+    // upload is a bit more tricky...
     if (this.entry && this.isDownload) {
       await this._loadLocalState().catch(safetyCatch).finally(() => {
         this._calculateStats()
@@ -81,11 +81,15 @@ module.exports = class Monitor extends ReadyResource {
   }
 
   async _loadLocalState () {
-    // TODO: think this will only work if its linear
-    const stream = this.blobs.createReadStream(this.entry.value.blob, { wait: false })
-    for await (const bytes of stream) {
-      this.stats.totalBytes += bytes.length
-      this.stats.blocks++
+    // @TODO: There's a better way to do this?
+    let blockIdx = this.stats.blockOffset
+    while (blockIdx <= this.stats.targetBlocks) {
+      if (await this.blobs.core.core.bitfield.get(blockIdx)) {
+        const bytes = await this.blobs.core.core.blocks.get(blockIdx)
+        this.stats.totalBytes += bytes.length
+        this.stats.blocks++
+      }
+      blockIdx++
     }
   }