feat: pos media yt — unified YouTube tools + subtitles (POS--9)

2026-09-09 07:04:22 -04:00
parent 9a164462e7
commit f14d24950a
19 changed files with 1093 additions and 482 deletions
@@ -0,0 +1,50 @@
+# lib/yt-lib.sh — shared helpers for yt-dlp-based media tools.
+# Sourced opt-in by yt-* subcommand files. Uses err() from lib/common.sh.
+
+# yt_check_deps [dry_run] [ffmpeg_purpose]
+# Check yt-dlp (+ ffmpeg unless dry_run=1 and caller wants dry-run to skip deps).
+# ffmpeg_purpose is the parenthetical in the error message (default: "MP3 conversion").
+# ytsync overrides this deliberately (needs yt-dlp+jq even in dry-run).
+yt_check_deps() {
+    local dry="${1:-0}" purpose="${2:-MP3 conversion}"
+    command -v yt-dlp &>/dev/null || err "yt-dlp not found — install it with: sudo apt install yt-dlp"
+    if [ "$dry" -eq 0 ]; then
+        command -v ffmpeg &>/dev/null || err "ffmpeg not found (needed for $purpose) — install it with: sudo apt install ffmpeg"
+    fi
+}
+
+# yt_validate_url <url>
+# Returns 1 (does NOT exit) when URL doesn't start with http:// or https://;
+# prints the diagnostic to stderr. Callers surface the error themselves (e.g.
+# `yt_validate_url "$url" 2>/dev/null || err "…"` with their own prefix) so a
+# helper whose only job is to check can never kill the caller's error path.
+yt_validate_url() {
+    local url="$1"
+    case "$url" in
+        http://*|https://*) return 0 ;;
+        *) echo "not a valid URL: $url (must start with http:// or https://)" >&2; return 1 ;;
+    esac
+}
+
+# yt_echo_cmd <args...>
+# Prints the yt-dlp command for --dry-run mode
+yt_echo_cmd() {
+    echo "yt-dlp $*"
+}
+
+# classify_url <url>
+# Domain classification: music.youtube/soundcloud/bandcamp → audio;
+# youtube/youtu.be/vimeo/twitch → video; unknown → ${GRAB_DEFAULT:-video}
+# Migrated from bin/pos-media-grab
+classify_url() {
+    local url="$1" mode="${GRAB_DEFAULT:-video}"
+    case "$url" in
+        *music.youtube.com*)  echo "audio" ;;
+        *soundcloud.com*)     echo "audio" ;;
+        *bandcamp.com*)       echo "audio" ;;
+        *youtube.com*|*youtu.be*) echo "video" ;;
+        *vimeo.com*)          echo "video" ;;
+        *twitch.tv*)          echo "video" ;;
+        *)                    echo "$mode" ;;
+    esac
+}