From 46e00518dec147c889d2d9e1a20d0dc1806ee7e6 Mon Sep 17 00:00:00 2001
From: Silvio Rhatto <rhatto@riseup.net>
Date: Sun, 2 Oct 2016 18:37:01 -0300
Subject: Refactor sync-media

---
 doc/todo.rst              |   2 +-
 share/hydractl/sync-media | 144 ++++++++++++++++++++++++----------------------
 2 files changed, 75 insertions(+), 71 deletions(-)

diff --git a/doc/todo.rst b/doc/todo.rst
index 3f538a1..c39949f 100644
--- a/doc/todo.rst
+++ b/doc/todo.rst
@@ -1,7 +1,7 @@
 TODO
 ====
 
-- sync-media: proper initialization for new machines.
+- sync-media: use unison instead of rsync.
 - mount-media: lvm support.
 - import-certs:
   - concat.pem.
diff --git a/share/hydractl/sync-media b/share/hydractl/sync-media
index a4fb69a..e8f01dd 100755
--- a/share/hydractl/sync-media
+++ b/share/hydractl/sync-media
@@ -144,80 +144,63 @@ if [ ! -z "$REMOTE" ]; then
   fi
 fi
 
-# Commit changes
-if [ -d "$CACHE" ]; then
-  # Fix cache permissions
-  #echo "Fixing $CACHE permissions..."
-  #$sudo find $CACHE -type f -exec chmod 644 {} \;
-  #$sudo find $CACHE -type d -exec chmod 755 {} \;
+# Ensure cache exists
+mkdir -p $CACHE
+
+# Fix cache permissions
+#echo "Fixing $CACHE permissions..."
+#$sudo find $CACHE -type f -exec chmod 644 {} \;
+#$sudo find $CACHE -type d -exec chmod 755 {} \;
+sync_media_incoming_perms
+
+# Iterate over existing repositories in the local cache
+for folder in `ls $CACHE`; do
+  # Sync each repository in the local cache
+  if [ -d "$CACHE/$folder/.git/annex" ]; then
+    if [ "`git -C $CACHE/$folder config sync-media.skip`" == "true" ]; then
+      continue
+    fi
 
-  sync_media_incoming_perms
+    (
+    cd $CACHE/$folder
+    echo "Syncing $CACHE/$folder..."
+
+    sync_media_playlist_perms
+    sync_media_ensure_remote $REMOTE $VOLUME/$MEDIA/$folder
+    sync_media_identity
+    sync_media_add
+    git annex sync
+    sync_media_getall $CACHE/$folder
+    sync_media_fsck
+    sync_media_dropunused
+    )
+  fi
+
+  # Ensure the removable media has each repository listed in the local cache
+  if [ ! -z "$DRIVE" ]; then
+    mkdir -p $VOLUME/$MEDIA
 
-  # Add and update local repositories
-  for folder in `ls $CACHE`; do
     if [ -d "$CACHE/$folder/.git/annex" ]; then
-      if [ "`git -C $CACHE/$folder config sync-media.skip`" == "true" ]; then
-        continue
+      if [ ! -d "$VOLUME/$MEDIA/$folder" ]; then
+        (
+        cd $VOLUME/$MEDIA
+        echo "Initializing $VOLUME/$MEDIA/$folder..."
+        git clone $CACHE/$folder && cd $folder && sync_media_identity && git annex init $DRIVE && \
+          git remote rename origin $HOST && cd $CACHE/$folder && git remote add $DRIVE $VOLUME/$MEDIA/$folder
+        )
       fi
-
-      #if [ "`git -C $CACHE/$folder config sync-media.ready`" != "true" ]; then
-      #  echo "Skipping $CACHE/$folder: not sync-media ready, please config your repo."
-      #  continue
-      #fi
-
-      (
-      cd $CACHE/$folder
-      echo "Syncing $CACHE/$folder..."
-
-      sync_media_playlist_perms
-      sync_media_ensure_remote $REMOTE $VOLUME/$MEDIA/$folder
-      sync_media_identity
-      sync_media_add
-      git annex sync
-      sync_media_getall $CACHE/$folder
-      sync_media_fsck
-      sync_media_dropunused
-      )
-    fi
-  done
-
-  if [ ! -z "$DRIVE" ]; then
-    if [ ! -d "$VOLUME/$MEDIA" ]; then
-      echo "Folder $VOLUME/$MEDIA does not exist..."
-    else
-      for folder in `ls $CACHE`; do
-        if [ -d "$CACHE/$folder/.git/annex" ]; then
-          if [ "`git -C $CACHE/$folder config sync-media.skip`" == "true" ]; then
-            continue
-          fi
-
-          #if [ "`git -C $CACHE/$folder config sync-media.ready`" != "true" ]; then
-          #  echo "Skipping $CACHE/$folder: not sync-media ready, please config your repo."
-          #  continue
-          #fi
-
-          if [ ! -d "$VOLUME/$MEDIA/$folder" ]; then
-            (
-            cd $VOLUME/$MEDIA
-            echo "Initializing $VOLUME/$MEDIA/$folder..."
-            git clone $CACHE/$folder && cd $folder && sync_media_identity && git annex init $DRIVE && \
-              git remote rename origin $HOST && cd $CACHE/$folder && git remote add $DRIVE $VOLUME/$MEDIA/$folder
-            )
-          fi
-        elif [ ! -d "$VOLUME/$MEDIA/$folder" ]; then
-          if [ ! -e "$CACHE/$folder/.sync-media/skip" ]; then
-            echo "Syncing $VOLUME/$MEDIA/$folder..."
-            rsync -av --delete --exclude=.sync-media $CACHE/$folder/ $VOLUME/$MEDIA/$folder/
-          fi
-        fi
-      done
+    elif [ ! -d "$VOLUME/$MEDIA/$folder" ]; then
+      mkdir -p $VOLUME/$MEDIA/$folder
     fi
   fi
-fi
+done
 
-# Retrieve changes at media volumes
+# Process removable or remote media
 if [ ! -z "$DRIVE" ] && [ -d "$VOLUME/$MEDIA" ]; then
+  # Iterate over existing repositories in the removable media
   for folder in `ls $VOLUME/$MEDIA`; do
+
+    # Sync each local repository in the removable media
     if [ -d "$VOLUME/$MEDIA/$folder/.git/annex" ]; then
       if [ "`git -C $VOLUME/$MEDIA/$folder config sync-media.skip`" == "true" ]; then
         continue
@@ -239,10 +222,31 @@ if [ ! -z "$DRIVE" ] && [ -d "$VOLUME/$MEDIA" ]; then
       #git annex drop --auto --numcopies=2
       )
     elif [ -d "$CACHE/$folder" ]; then
-      # Avoid empty source folders or those configured to be skipped
-      if [ ! -e "$CACHE/$folder/.sync-media/skip" ] && [ ! -z "`ls -1 $CACHE/$folder`" ]; then
-        echo "Syncing $VOLUME/$MEDIA/$folder..."
-        rsync -av --delete --exclude=.sync-media $CACHE/$folder/ $VOLUME/$MEDIA/$folder/
+      # Avoid those configured to be skipped
+      if [ ! -e "$CACHE/$folder/.sync-media/skip" ]; then
+        # Avoid empty source folders
+        if [ ! -z "`ls -1 $CACHE/$folder`" ]; then
+          echo "Syncing $CACHE/$folder into $VOLUME/$MEDIA/$folder..."
+          rsync -av --delete --exclude=.sync-media $CACHE/$folder/ $VOLUME/$MEDIA/$folder/
+        elif [ ! -z "`ls -1 $VOLUME/$MEDIA/$folder`" ]; then
+          echo "Syncing $VOLUME/$MEDIA/$folder into $CACHE/$folder..."
+          rsync -av --delete --exclude=.sync-media $VOLUME/$MEDIA/$folder/ $CACHE/$folder/
+        fi
+      fi
+    fi
+
+    # Ensure the local cache has each repository listed in the removable media
+    if [ ! -d "$CACHE/$folder" ]; then
+      if [ -d "$VOLUME/$MEDIA/$folder/.git/annex" ]; then
+        (
+        cd $CACHE
+        echo "Initializing $CACHE/$folder..."
+        git clone $VOLUME/$MEDIA/$folder && cd $folder && sync_media_identity && git annex init $HOST && \
+          git remote rename origin $REMOTE && cd $VOLUME/$MEDIA/$folder && git remote add $HOST $CACHE/$folder 
+        )
+      else
+        echo "Syncing $VOLUME/$MEDIA/$folder into $CACHE/$folder..."
+        rsync -av --delete --exclude=.sync-media $VOLUME/$MEDIA/$folder/ $CACHE/$folder/
       fi
     fi
   done
@@ -264,7 +268,7 @@ elif [ ! -z "$REMOTE" ]; then
     else
       # Avoid empty source folders or those configured to be skipped
       if [ ! -e "$CACHE/$folder/.sync-media/skip" ] && [ ! -z "`ls -1 $CACHE/$folder`" ]; then
-        echo "Syncing $VOLUME/$MEDIA/$folder..."
+        echo "Syncing $CACHE/$folder into $REMOTE.$DOMAIN:$CACHE/$folder..."
         rsync -av --delete --exclude=.sync-media $CACHE/$folder/ $REMOTE.$DOMAIN:$CACHE/$folder/
       fi
     fi
-- 
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