Import ViewState from another datatbase

Import viewstate (watch history) from another database.

Viewstate import - Development complete

Developer initial testing complete.
1.  Copy DB from Syno to Linux workstation
2.  Setup empty PMS on Linux workstation
3.  Add library section
4.  Observe media all unwatched
5.  import the DS418's database 
6.  Verify on Linux workstation -- all titles now marked played



Replaced 'echo -n' with posix printf.


Timestamp changed,  Add Undo to new code

1.  To increase portability,  changed the ':' in timestamo to '.' (MacOS problems)
2.  Completed adding WriteLog and logic to support UNDO for importing Viewstate



Change 'cut' back to awk


use printf in new code. Reapply timestamp change


Viewstate import - Improve error checking and recovery


Fix misplaced quote

DBRepair.sh

@@ -186,7 +186,7 @@ ConfirmYesNo() {
   Answer=""
   while [ "$Answer" = "" ]
   do
-    echo -n "$1 (Y/N) ? "
+    printf "$1 (Y/N) ? "
     read Input
 
     # EOF = No
@@ -209,7 +209,7 @@ ConfirmYesNo() {
   Answer=""
   while [ "$Answer" = "" ]
   do
-    echo -n "Are you sure (Y/N) ? "
+    printf "Are you sure (Y/N) ? "
     read Input
 
     # EOF = No
@@ -338,7 +338,7 @@ HostConfig() {
                     cat override.conf local.conf *.conf 2>/dev/null | grep "APPLICATION_SUPPORT_DIR" | head -1)"
 
       if [ "$NewSuppDir" != "" ]; then
-        NewSuppDir="$(sed -e 's/.*_DIR=//' | tr -d '"' | tr -d "'")"
+        NewSuppDir="$(echo $NewSuppDir | sed -e 's/.*_DIR=//' | tr -d '"' | tr -d "'")"
 
         if [ -d "$NewSuppDir" ]; then
           AppSuppDir="$NewSuppDir"
@@ -440,7 +440,7 @@ SetLast() {
 CPPL=com.plexapp.plugins.library
 
 # Initial timestamp
-TimeStamp="$(date "+%Y-%m-%d_%H:%M:%S")"
+TimeStamp="$(date "+%Y-%m-%d_%H.%M.%S")"
 
 # Initialize LastName LastTimestamp
 SetLast "" ""
@@ -520,10 +520,11 @@ do
     echo "  4. Attempt database repair"
     echo "  5. Replace current database with newest usable backup copy"
     echo "  6. Undo last successful action (Vacuum, Reindex, Repair, or Replace)"
-    echo "  7. Show logfile"
+    echo "  7. Import Viewstate / Watch history from another PMS database"
-    echo "  8. Exit"
+    echo "  8. Show logfile"
+    echo "  9. Exit"
     echo " "
-    echo -n "Enter choice: "
+    printf "Enter choice: "
     if [ "$1" != "" ]; then
       Input="$1"
       echo "$1"
@@ -542,10 +543,12 @@ do
     [ "$Input" = "6" ] && Choice=6
     [ "$Input" = "7" ] && Choice=7
     [ "$Input" = "8" ] && Choice=8
+    [ "$Input" = "9" ] && Choice=9
+
     [ "$Choice" -eq 0 ] && echo " " && echo "'$Input' - Is invalid. Try again"
 
     # Update timestamp
-    TimeStamp="$(date "+%Y-%m-%d_%H:%M:%S")"
+    TimeStamp="$(date "+%Y-%m-%d_%H.%M.%S")"
   done
 
   # Spacing for legibility
@@ -743,7 +746,7 @@ do
     Owner="$(stat -c '%u:%g' $CPPL.db)"
 
     # Attempt to export main db to SQL file (Step 1)
-    echo -n  'Export: (main)..'
+    printf  'Export: (main)..'
     "$PLEX_SQLITE" $CPPL.db  ".output '$TMPDIR/library.plexapp.sql-$TimeStamp'" .dump
     Result=$?
     if ! SQLiteOK $Result; then
@@ -757,7 +760,7 @@ do
     fi
 
     # Attempt to export blobs db to SQL file
-    echo -n '(blobs)..'
+    printf '(blobs)..'
     "$PLEX_SQLITE" $CPPL.blobs.db  ".output '$TMPDIR/blobs.plexapp.sql-$TimeStamp'" .dump
     Result=$?
     if ! SQLiteOK $Result; then
@@ -784,7 +787,7 @@ do
     WriteLog "Repair  - Export databases - PASS"
 
     # Library and blobs successfully exported, create new
-    echo -n 'Import: (main)..'
+    printf 'Import: (main)..'
     "$PLEX_SQLITE" $CPPL.db-$TimeStamp < "$TMPDIR/library.plexapp.sql-$TimeStamp"
     Result=$?
     if ! SQLiteOK $Result; then
@@ -795,7 +798,7 @@ do
       continue
     fi
 
-    echo -n '(blobs)..'
+    printf '(blobs)..'
     "$PLEX_SQLITE" $CPPL.blobs.db-$TimeStamp < "$TMPDIR/blobs.plexapp.sql-$TimeStamp"
     Result=$?
     if ! SQLiteOK $Result ; then
@@ -899,7 +902,7 @@ do
       Dates=$(GetDates)
 
       # If no backups, error and exit
-      if [ "$Dates" == "" ]  && [ $Damaged -eq 1 ]; then
+      if [ "$Dates" = "" ]  && [ $Damaged -eq 1 ]; then
         Output "Database is damaged and no backups avaiable."
         Output "Only available option is Repair."
         WriteLog "Replace - Scan for usable candidates - FAIL"
@@ -1050,20 +1053,101 @@ do
       WriteLog "Undo    - Nothing to Undo."
     fi
 
-  # 7.  - Show Logfile
+  # 7.  - Get Viewstate/Watch history from another DB and import
   elif [ $Choice -eq 7 ]; then
 
+    printf "Pathname of database containing watch history to import: "
+    read Input
+
+    # Did we get something?
+    [ "$Input" = "" ] && continue
+
+    # Go see if it's a valid database
+    if [ ! -f "$Input" ]; then
+      Output "'$Input' does not exist."
+      continue
+    fi
+
+    WriteLog "Import   - Attempting to import watch history from '$Input' "
+
+    # Confirm our databases are intact
+    if ! CheckDatabases; then
+      Output "Error:  PMS databases are damaged.  Repair needed. Refusing to import."
+      WriteLog "Import   - Verify main database - FAIL"
+      continue
+    fi
+
+    # Check the given database
+    if ! CheckDB "$Input"; then
+      Output "Error:  Given database is damaged.  Repair needed. Database not trusted.  Refusing to import."
+      WriteLog "Import  - Verify '$Input' - FAIL"
+      continue
+    fi
+
+    # Make a backup
+    Output "Backing up databases"
+    if ! MakeBackups "Import  "; then
+      Output "Error making backups.  Cannot continue."
+      WriteLog "Import  - MakeBackups - FAIL"
+      Fail=1
+      continue
+    else
+      WriteLog "Import  - MakeBackups - PASS"
+    fi
+
+
+    # Export viewstate from DB
+    Output "Exporting Viewstate / Watch history"
+    echo ".dump metadata_item_settings" | "$PLEX_SQLITE" "$Input" | grep -v TABLE | grep -v INDEX > "$TMPDIR/Viewstate.sql-$TimeStamp"
+
+    # Make certain we got something usable
+    if [ $(wc -l "$TMPDIR/Viewstate.sql-$TimeStamp" | awk '{print $1}') -lt 1 ]; then
+      Output "No viewstates found to import."
+      continue
+    fi
+
+    # Make a working copy to import into
+    Output "Making backup copy of main database"
+    cp -p $CPPL.db "$TMPDIR/Viewstate.db-$TimeStamp"
+
+    # Import viewstates into working copy
+    Output "Importing Viewstate data"
+    "$PLEX_SQLITE" $CPPL.db < "$TMPDIR/Viewstate.sql-$TimeStamp" 2> /dev/null
+
+    # Make certain the resultant DB is OK
+    Output "Checking database following import"
+
+    if ! CheckDB $CPPL.db ; then
+      Output "Error $Result during import.  Import corrupted database."
+      Output "      Undoing viewstate import."
+
+      cp -p "$TMPDIR/Viewstate.db-$TimeStamp" $CPPL.db
+      WriteLog "Import  - Import: $Input - FAIL"
+      continue
+    fi
+
+    # We were successful
+    Output "Viewstate import successful."
+    WriteLog "Import  - Import: $Input - PASS"
+
+    # We were successful
+    SetLast "Import" "$TimeStamp"
+
+
+  # 8.  - Show Logfile
+  elif [ $Choice -eq 8 ]; then
+
     echo ==================================================================================
     cat "$LOGFILE"
     echo ==================================================================================
 
-  # 8.  - Exit
+  # 9.  - Exit
-  elif [ $Choice -eq 8 ]; then
+  elif [ $Choice -eq 9 ]; then
 
     # Ask questions on graceful exit
     if [ $Exit -eq 0 ]; then
       # Ask if the user wants to remove the DBTMP directory and all backups thus far
-      if ConfirmYesNo "Ok to remove temporary work files for this session?" ; then
+      if ConfirmYesNo "Ok to remove temporary databases/workfiles for this session?" ; then
 
         # Here it goes
         Output "Deleting all temporary work files."