#!/usr/bin/env bash
# slab-video [--playlist] <file.mp4> [more.mov …] — open videos in slab's
# minimal player. Without --playlist, appends absolute paths to
# $SLAB_HOME/state/open-video and raises one chromeless AVKit panel per movie;
# a second open panel grids the wall automatically. With --playlist, writes one
# atomic ordered queue request and raises one panel with the queue listed
# beside the picture (click a row to jump; left/right also change tracks; it
# advances on its own). Re-asking for an open source brings its window forward
# and restarts playback. Single-video panels watch the file and reload on
# rewrite.
#
#   slab-video --close-all   close every open panel
#   slab-video --tile        re-grid the open panels
#
# See slab/menubar-swift/Sources/SlabMenubar/VideoViewer.swift.
set -euo pipefail

SLAB_HOME="${SLAB_HOME:-$HOME/.local/share/slab}"
REQUEST="$SLAB_HOME/state/open-video"
PLAYLIST_REQUESTS="$SLAB_HOME/state/open-video-playlists"

mkdir -p "$SLAB_HOME/state" "$PLAYLIST_REQUESTS"

case "${1:-}" in
    --close-all) touch "$SLAB_HOME/state/close-video"; exit 0 ;;
    --tile)      touch "$SLAB_HOME/state/tile-video"; exit 0 ;;
esac

playlist=false
if [ "${1:-}" = "--playlist" ]; then
    playlist=true
    shift
fi

if [ $# -eq 0 ]; then
    echo "usage: slab-video [--playlist] <file.mp4> [more.mov …] | --close-all | --tile" >&2
    exit 1
fi

# Which Claude session asked? Walk up the process tree to the claude pid
# (same loop as claude-prompt-log.sh) and match it against the live
# active-prompts markers — the viewer chip then wears that session's
# sticky emoji. Empty when not launched from a Claude session.
session_id=""
claude_pid=$$
for _ in 1 2 3 4 5 6 7 8; do
    parent=$(ps -o ppid= -p "$claude_pid" 2>/dev/null | tr -d ' ')
    [ -z "$parent" ] || [ "$parent" = "1" ] && break
    comm=$(ps -o comm= -p "$parent" 2>/dev/null | tr -d ' ')
    claude_pid=$parent
    case "$comm" in *claude*) break ;; esac
done
if command -v jq >/dev/null 2>&1; then
    for marker in "$SLAB_HOME"/state/active-prompts/*; do
        [ -f "$marker" ] || continue
        if [ "$(jq -r '.claude_pid // 0' "$marker" 2>/dev/null)" = "$claude_pid" ]; then
            session_id=$(jq -r '.session_id // ""' "$marker" 2>/dev/null)
            break
        fi
    done
fi

for f in "$@"; do
    if [ ! -f "$f" ]; then
        echo "slab-video: no such file: $f" >&2
        exit 1
    fi
done

if [ "$playlist" = true ]; then
    request_tmp=$(mktemp "$PLAYLIST_REQUESTS/.playlist.XXXXXX")
    trap 'rm -f "$request_tmp"' EXIT
    for f in "$@"; do
        abs="$(cd "$(dirname "$f")" && pwd)/$(basename "$f")"
        printf '%s\t%s\n' "$abs" "$session_id" >> "$request_tmp"
    done
    request_final="$PLAYLIST_REQUESTS/$(date +%s)-$$.playlist"
    mv "$request_tmp" "$request_final"
    trap - EXIT
    exit 0
fi

for f in "$@"; do
    # realpath isn't guaranteed on stock macOS bash paths — resolve by hand.
    abs="$(cd "$(dirname "$f")" && pwd)/$(basename "$f")"
    printf '%s\t%s\n' "$abs" "$session_id" >> "$REQUEST"
done