#!/bin/bash
# ══════════════════════════════════════════════════════════════════════════════
#  Vision Studio — Script de deploiement via Forgejo Actions (hote .117)
#
#  Calque du deploy_runner.sh de Kuby.
#  Tourne sur l'HOTE .117 (utilisateur discord), livre par rsync depuis
#  .forgejo/workflows/deploy.yml puis execute a distance en SSH.
#
#  Architecture prod .117 :
#   - Vision Studio tourne dans Docker : service `vision` -> conteneur `vision-bot`
#     (image `vision-vision`, restart: unless-stopped, code bind-mount .:/app).
#   - Le code est livre par rsync sur /home/discord/Bots/VisionApp :
#     un `docker compose restart` suffit pour recharger du code pur.
#   - Si requirements.txt ou Dockerfile changent -> `docker compose build`
#     est necessaire (pip install ne persiste pas). Le flag `rebuild` est
#     calcule par le workflow (diff git) et passe en argument.
#
#  Usage : deploy_runner.sh <branch> <commit> <rebuild>
# ══════════════════════════════════════════════════════════════════════════════
set -uo pipefail

ROOT_DIR="$(cd "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")/.." && pwd)"
BRANCH="${1:-main}"
COMMIT="${2:-inconnu}"
REBUILD="${3:-false}"
LOCK_FILE="/tmp/vision_deploy_runner.lock"
DEPLOY_LOG="${ROOT_DIR}/data/deploy.log"
CONTAINER="vision-bot"

log() { echo "[deploy] $(date '+%F %T') $*"; }

acquire_lock() {
    if [ -f "$LOCK_FILE" ]; then
        local pid
        pid=$(cat "$LOCK_FILE" 2>/dev/null)
        if [ -n "$pid" ] && kill -0 "$pid" 2>/dev/null; then
            log "ERROR: deploy deja en cours (PID $pid)"
            exit 1
        fi
        log "WARN: lock orphelin, nettoyage"
        rm -f "$LOCK_FILE"
    fi
    echo $$ > "$LOCK_FILE"
}
release_lock() { rm -f "$LOCK_FILE"; }
trap release_lock EXIT

cd "$ROOT_DIR"
acquire_lock

log "Deploy demarre — branch=$BRANCH commit=$COMMIT rebuild=$REBUILD"

if ! command -v docker &>/dev/null; then
    log "ERROR: docker introuvable sur l'hote"
    exit 1
fi

if [ "$REBUILD" = "true" ]; then
    log "requirements/Dockerfile modifies -> rebuild image Docker..."
    if ! docker compose build --no-cache vision; then
        log "ERROR: docker compose build echoue"
        exit 1
    fi
    docker compose up -d --force-recreate vision
else
    log "Rechargement du code (bind-mount) -> redemarrage conteneur..."
    docker compose up -d vision
    docker compose restart vision
fi

sleep 5

if ! docker ps --filter "name=${CONTAINER}" --filter "status=running" --format '{{.Names}}' | grep -q "${CONTAINER}"; then
    log "ERROR: conteneur ${CONTAINER} non demarre"
    docker logs --tail 40 "${CONTAINER}" 2>&1 || true
    exit 1
fi

mkdir -p "$(dirname "$DEPLOY_LOG")"
echo "$(date '+%F %T') | $BRANCH | $COMMIT | rebuild=$REBUILD | auto" >> "$DEPLOY_LOG"

log "Deploy termine — conteneur ${CONTAINER} en marche"