Add trailer_folder_migration.sh — one-off tool to migrate TV trailers into trailers/ convention
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Gmer4Lfe
Executable
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#!/bin/bash
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# ==============================================================================================
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# ============================= Trailer Folder Migration =======================================
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# ==============================================================================================
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#
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# PURPOSE
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# ─────────────────────────────────────────────────────────────────────────────
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# One-off migration for TV show trailers downloaded before Trailarr's "Series
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# Trailers" profile was corrected. Emby ingests TV trailers sitting at the
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# series root using the movie-style "<Show> (Year)-trailer.ext" convention as
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# fake episodes instead of recognizing them as trailers — confirmed via Emby's
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# server log. The fix is a "trailers/" subfolder (lowercase) under the series
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# folder containing a plain "trailer.ext" file — same convention Trailarr now
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# uses going forward (customfilter_id=2, "Series Trailers" profile).
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#
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# This script only moves/renames existing misplaced files. It does not touch
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# Trailarr or Emby — a normal periodic Emby library scan picks up the moved
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# files on its own.
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#
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# ==============================================================================================
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# OPERATIONAL MODEL
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# ==============================================================================================
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#
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# Discovery
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# Scans SONARR_TV_ROOT one level deep for "*-trailer.*" files sitting
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# directly in a series folder (the movie-style convention).
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#
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# Single Trailer Per Show
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# <Show>/<Show> (Year)-trailer.mkv → <Show>/trailers/trailer.mkv
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#
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# Multiple Trailers Per Show
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# Sorted alphabetically for determinism. First file becomes trailer.ext,
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# subsequent files become trailer-2.ext, trailer-3.ext, etc. Emby's TV
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# trailer convention only requires the file to live in trailers/ — exact
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# filename beyond the first doesn't matter, but distinct names avoid
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# collisions and keep behavior deterministic on re-run.
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#
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# Collision Safety
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# If the destination filename already exists, the file is skipped and
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# logged as a conflict rather than overwritten. Lets the script be re-run
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# safely after a partial run or a manually resolved conflict.
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#
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# ==============================================================================================
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# CONFIGURATION
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# ==============================================================================================
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#
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# host*.conf
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#
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# HOST*_SONARR_TV_ROOT
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# Host filesystem path to the TV library. Aliased by detect_hosts() →
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# SONARR_TV_ROOT.
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#
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# ==============================================================================================
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# RUNTIME MODES
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# ==============================================================================================
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#
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# trailer_folder_migration.sh
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# Move every misplaced trailer file into <show>/trailers/.
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#
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# trailer_folder_migration.sh --dry-run
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# Show what would move, with no filesystem changes.
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#
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# trailer_folder_migration.sh --log
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# Verbose output — per-file source/destination.
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#
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# ==============================================================================================
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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source "$SCRIPT_DIR/../load_config.sh"
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parse_args "$@"
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# ==============================================================================================
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# ━━━ Setup ━━━
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# ==============================================================================================
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acquire_lock
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# detect_hosts() sets MY_ID and aliases HOST*_SONARR_TV_ROOT → SONARR_TV_ROOT
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detect_hosts
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if [[ -z "${SONARR_TV_ROOT:-}" ]]; then
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error "SONARR_TV_ROOT not set for $MY_ID — check HOST*_SONARR_TV_ROOT in host*.conf"
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exit 1
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fi
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if [[ ! -d "$SONARR_TV_ROOT" ]]; then
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error "SONARR_TV_ROOT not found: $SONARR_TV_ROOT"
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exit 1
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fi
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log "Identity: $MY_ID ($LOCAL_SERVER_NAME)"
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log "TV root: $SONARR_TV_ROOT"
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[[ "$DRY_RUN" == true ]] && warn "DRY RUN — no files will be moved"
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# ==============================================================================================
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# ━━━ Discover misplaced trailer files, grouped by show ━━━
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# ==============================================================================================
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echo ""
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echo "━━━ $ICON_CLEAN Trailer Folder Migration — $MY_ID ━━━"
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START=$(date +%s)
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declare -A SHOW_FILES=() # show dir → newline-separated list of trailer file paths
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while IFS= read -r -d '' f; do
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show_dir="$(dirname "$f")"
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SHOW_FILES["$show_dir"]+="$f"$'\n'
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done < <(find "$SONARR_TV_ROOT" -mindepth 2 -maxdepth 2 -iname "*-trailer.*" -print0)
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TOTAL_SHOWS=${#SHOW_FILES[@]}
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if [[ "$TOTAL_SHOWS" -eq 0 ]]; then
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echo "$ICON_DONE No misplaced trailer files found — nothing to migrate"
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exit 0
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fi
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warn "$TOTAL_SHOWS show(s) with misplaced trailer file(s)"
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MOVED=0
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SKIPPED=0
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FAILED=0
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FAIL_LIST=()
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for show_dir in "${!SHOW_FILES[@]}"; do
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mapfile -t files < <(printf '%s' "${SHOW_FILES[$show_dir]}" | sort)
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trailers_dir="$show_dir/trailers"
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show_name="$(basename "$show_dir")"
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if [[ "$DRY_RUN" != true ]]; then
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mkdir -p "$trailers_dir" || {
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error "$show_name — could not create trailers/ dir"
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FAILED=$(( FAILED + ${#files[@]} ))
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FAIL_LIST+=("$show_name")
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continue
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}
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fi
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idx=0
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for src in "${files[@]}"; do
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[[ -z "$src" ]] && continue
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idx=$(( idx + 1 ))
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ext="${src##*.}"
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if [[ "$idx" -eq 1 ]]; then
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dest="$trailers_dir/trailer.$ext"
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else
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dest="$trailers_dir/trailer-$idx.$ext"
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fi
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if [[ "$DRY_RUN" == true ]]; then
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log "$show_name — would move: $(basename "$src") → trailers/$(basename "$dest")"
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MOVED=$(( MOVED + 1 ))
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continue
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fi
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if [[ -e "$dest" ]]; then
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warn "$show_name — $(basename "$dest") already exists, skipping $(basename "$src")"
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SKIPPED=$(( SKIPPED + 1 ))
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continue
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fi
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if mv "$src" "$dest"; then
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log "$show_name — $(basename "$src") → trailers/$(basename "$dest")"
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MOVED=$(( MOVED + 1 ))
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else
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error "$show_name — failed to move $(basename "$src")"
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FAILED=$(( FAILED + 1 ))
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FAIL_LIST+=("$show_name")
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fi
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done
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done
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END=$(date +%s)
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# ==============================================================================================
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# ━━━ Summary ━━━
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# ==============================================================================================
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echo ""
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echo "━━━━━ $ICON_SUMMARY TRAILER MIGRATION SUMMARY ━━━━━"
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echo "$ICON_HOST Identity: $MY_ID ($LOCAL_SERVER_NAME)"
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echo "$ICON_CLEAN Shows: $TOTAL_SHOWS"
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echo "$ICON_TIME Duration: $(format_duration $(( END - START )))"
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echo ""
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echo "$ICON_DONE Moved: $MOVED"
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[[ "$SKIPPED" -gt 0 ]] && echo "$ICON_SKIP Skipped: $SKIPPED (destination already existed)"
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[[ "$FAILED" -gt 0 ]] && echo "$ICON_ERROR Failed: $FAILED"
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echo ""
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if [[ "$DRY_RUN" == true ]]; then
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warn "DRY RUN — no changes made"
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elif [[ "$FAILED" -gt 0 ]]; then
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echo "$ICON_ERROR Status: SOME MOVES FAILED — ${FAIL_LIST[*]}"
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notify "Trailer folder migration failed for: ${FAIL_LIST[*]}" \
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"Trailer Migration" "warning"
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else
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echo "$ICON_DONE Status: done — $MOVED file(s) migrated across $TOTAL_SHOWS show(s)"
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fi
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echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
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[[ "$FAILED" -gt 0 ]] && exit 1
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exit 0
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