#!/usr/bin/env bash
# Installiert den Voice-Agent Mac-Worker als LaunchAgent.
# Idempotent — kann zum Update wiederholt laufen.
#
# Nutzung:
#   ./install-launchagent.sh           # installieren / aktualisieren
#   ./install-launchagent.sh uninstall # entfernen
#   ./install-launchagent.sh status    # Status + letzte Logs
set -euo pipefail

LABEL="com.voiceagent.worker"
PLIST_DST="$HOME/Library/LaunchAgents/${LABEL}.plist"
LOG_DIR="$HOME/Library/Logs"

# Verzeichnis dieses Skripts → Repo-Root/mac-worker
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
WORKDIR="$(cd "$SCRIPT_DIR/.." && pwd)"
TEMPLATE="$SCRIPT_DIR/com.voiceagent.worker.plist.template"

cmd="${1:-install}"

uninstall() {
    if [ -f "$PLIST_DST" ]; then
        echo "[*] Stoppe und entlade LaunchAgent…"
        launchctl unload "$PLIST_DST" 2>/dev/null || true
        rm -f "$PLIST_DST"
        echo "[✓] $PLIST_DST entfernt."
    else
        echo "[i] Kein LaunchAgent installiert ($PLIST_DST nicht vorhanden)."
    fi
}

show_status() {
    echo "── launchctl list | grep $LABEL ─────────────────────────"
    launchctl list | grep "$LABEL" || echo "(nicht geladen)"
    echo
    echo "── Health-Check ─────────────────────────────────────────"
    curl -fsS http://127.0.0.1:8080/health 2>/dev/null && echo || echo "(nicht erreichbar)"
    echo
    echo "── stderr.log (letzte 30 Zeilen) ────────────────────────"
    tail -n 30 "$LOG_DIR/voice-agent-worker.err.log" 2>/dev/null || echo "(keine Logs)"
}

install_agent() {
    # Vorbedingungen prüfen
    if [ ! -x "$WORKDIR/.venv/bin/uvicorn" ]; then
        echo "FEHLER: $WORKDIR/.venv/bin/uvicorn nicht gefunden." >&2
        echo "Bitte zuerst die Python-Umgebung einrichten:" >&2
        echo "  cd $WORKDIR && python3.11 -m venv .venv && source .venv/bin/activate && pip install -r requirements.txt" >&2
        exit 1
    fi

    if [ ! -f "$WORKDIR/.env" ]; then
        echo "WARNUNG: $WORKDIR/.env fehlt — kopiere aus .env.example."
        cp "$WORKDIR/.env.example" "$WORKDIR/.env"
    fi

    mkdir -p "$LOG_DIR" "$HOME/Library/LaunchAgents"

    echo "[1/4] Generiere plist mit WORKDIR=$WORKDIR"
    sed \
        -e "s|__WORKDIR__|$WORKDIR|g" \
        -e "s|__HOME__|$HOME|g" \
        "$TEMPLATE" > "$PLIST_DST"

    echo "[2/4] Falls bereits geladen: vorher entladen"
    launchctl unload "$PLIST_DST" 2>/dev/null || true

    echo "[3/4] Lade LaunchAgent"
    launchctl load -w "$PLIST_DST"

    echo "[4/4] Warte 2 s und prüfe Health-Endpoint"
    sleep 2
    if curl -fsS http://127.0.0.1:8080/health >/dev/null; then
        echo
        echo "[✓] Voice-Agent Mac-Worker läuft."
        curl -s http://127.0.0.1:8080/health | python3 -m json.tool 2>/dev/null || true
    else
        echo
        echo "[!] Health-Check fehlgeschlagen. Logs:"
        echo "    $LOG_DIR/voice-agent-worker.err.log"
        echo "    $LOG_DIR/voice-agent-worker.out.log"
        tail -n 20 "$LOG_DIR/voice-agent-worker.err.log" 2>/dev/null || true
        exit 1
    fi

    echo
    echo "── Verwaltung ───────────────────────────────────────────"
    echo "  Stoppen / Starten:  launchctl unload|load -w $PLIST_DST"
    echo "  Status:             $0 status"
    echo "  Entfernen:          $0 uninstall"
    echo "  Logs (live):        tail -f $LOG_DIR/voice-agent-worker.{out,err}.log"
}

case "$cmd" in
    install)   install_agent ;;
    uninstall) uninstall ;;
    status)    show_status ;;
    *)
        echo "Nutzung: $0 [install|uninstall|status]" >&2
        exit 1
        ;;
esac