From 599e269e67e531dd19ac8d457b1e0f724d19da1e Mon Sep 17 00:00:00 2001
From: Leo Butler <nb0yjxtr@sdf.org>
Date: Thu, 12 May 2022 11:46:04 -0500
Subject: [PATCH] myth-move-and-symlink-watched-files

Move a watched, transcoded file from recordings directory to watched-recordings.
---
 ffmpeg-myth.scm | 55 ++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 54 insertions(+), 1 deletion(-)

diff --git a/ffmpeg-myth.scm b/ffmpeg-myth.scm
index 483265e..a0b8511 100755
--- a/ffmpeg-myth.scm
+++ b/ffmpeg-myth.scm
@@ -21,6 +21,7 @@
 (define ffmpeg-transcoding-options  "-c:v libx264 -preset slow -crf 21 -c:a ac3 -g 60 -keyint_min 30")
 (define ffmpeg-transcoded-file-muxer 'mpegts) ;; 'matroska
 (define recordings-directory "/var/lib/mythtv/recordings")
+(define watched-recordings-directory "/var/lib/mythtv/watched-recordings")
 (define working-directory "/mnt/lvraid5/ffmpeg-cut-list.d")
 (define mythtv-recorded-table->metadata-list '(chanid starttime endtime title subtitle description season episode recordid seriesid programid inetref previouslyshown originalairdate))
 (define (mythconverg-input-file-name)
@@ -593,9 +594,61 @@
       (lambda (key . args)
       	(list 'error (recording-basename rec))))))
 
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; File-system handling
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+(define (move-file old new)
+  (shell-command-to-string (simple-format #f "mv ~a ~a" old new)))
+(define (symlink-file target linkname)
+  (shell-command-to-string (simple-format #f "ln -s -r ~a ~a" target linkname)))
+(define (symlink? name)
+  (eq? 'symlink (stat:type (lstat name))))
+(define (file-chain name)
+  (letrec ((dereference (lambda (s rst)
+			  (if (eq? #f s)
+			      rst
+			      (dereference (if (symlink? s) (readlink s) #f) (cons s rst))))))
+    (dereference name '())))
+(define (delete-file-chain name)
+  (letrec ((delete-file1 (lambda (file)
+			   (catch #t (lambda ()
+				       (delete-file file))
+			     (lambda (key . args)
+			       (simple-format #t "delete-file: Error ~a, ~a\n" key args))))))
+    (map delete-file1 (file-chain name))))
+
+(define (mythtv-move+symlink-watched-files0 files)
+  (letrec ((maybe-mv-files (lambda (files . rest)
+			     (cond ((null? files)
+				    rest)
+				   ((string? (caar files))
+				    (maybe-mv-files (cdr files) (cons (maybe-mv-file (caar files)) rest)))
+				   (#t
+				    (maybe-mv-files (cdr files) (cons (caar files) 'skipped) rest)))))
+	   (maybe-mv-file (lambda (file)
+			    (let ((f (simple-format #f "~a/~a" recordings-directory file))
+				  (n (simple-format #f "~a/~a" watched-recordings-directory file)))
+			      (cond ((not (access? f F_OK))
+				     (cons f 'file-does-not-exist))
+				    ((symlink? f)
+				     (cons f 'symlink))
+				    (#t
+				     (move-file f n)
+				     (symlink-file n f)
+				     (cons f n)))))))
+    (maybe-mv-files files)))
+
+(define* (mythtv-move-and-symlink-watched-files #:optional (files '()))
+  (let ((watched (if (null? files) (mythconverg-execute+parse "select basename from recorded where watched=1 and (basename like '%.h264.ts' or basename like '%.mkv');") files)))
+    (mythtv-move+symlink-watched-files0 files)))
+
+
+
+
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;  MAIN  ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
-(define (ffmpeg-myth0 chanid starttime cut-or-skip)
+(define (ffmpeg-myth1 chanid starttime cut-or-skip)
   (let* ((rec (create-record-data chanid starttime cut-or-skip))
 	 (cmd (ffmpeg-split+transcode-recording rec))
 	 (tr-rec (create-record-data-for-transcode rec)))