#!/bin/bash
set -Eeuo pipefail

# =============================================================================
# TerManager2 — application container entrypoint
#
# The image is self-contained: vendor/ and public/build are baked in at build
# time. This script only does what genuinely cannot happen until runtime —
# resolve APP_KEY, wait for the database, migrate, and warm the caches.
#
# Configuration comes from real environment variables (Dokploy injects them).
# No .env file is written; Laravel reads the process environment directly.
# =============================================================================

log()  { echo "[*] $*"; }
ok()   { echo "[✓] $*"; }
warn() { echo "[!] $*" >&2; }
die()  { echo "[✗] $*" >&2; exit 1; }

echo "========================================="
echo "  TerManager2 — starting"
echo "========================================="

retry() {
    local attempts="$1" delay="$2"; shift 2
    local n=1
    until "$@"; do
        if [ "$n" -ge "$attempts" ]; then
            return 1
        fi
        warn "Attempt ${n}/${attempts} failed. Retrying in ${delay}s..."
        sleep "$delay"
        n=$((n + 1))
    done
}

# -----------------------------------------------------------------------------
# 0. Required configuration
#    APP_URL anchors every generated link (assignment PDFs, e-mails) and is
#    matched against the incoming Host header, so a wrong or missing value
#    surfaces as blank pages or 400s much later. Fail here instead, where the
#    message is unambiguous.
# -----------------------------------------------------------------------------
if [ -z "${APP_URL:-}" ]; then
    die "APP_URL is not set. Set it to the public URL of the application, e.g. https://territori.example.org"
fi

case "$APP_URL" in
    http://*|https://*) ;;
    *) die "APP_URL must include the scheme (https://...), got: ${APP_URL}" ;;
esac

# -----------------------------------------------------------------------------
# 1. Writable directories
#    The storage volume mounts empty on a first deploy, which hides the
#    skeleton baked into the image — recreate it every boot.
# -----------------------------------------------------------------------------
mkdir -p \
    storage/framework/cache/data \
    storage/framework/sessions \
    storage/framework/views \
    storage/logs \
    storage/app/public \
    bootstrap/cache

if [ "$(id -u)" = "0" ]; then
    chown -R www-data:www-data storage bootstrap/cache
    chmod -R 775 storage bootstrap/cache
fi
ok "Storage directories ready."

# -----------------------------------------------------------------------------
# 2. APP_KEY
#    Personal data of proclamatori is encrypted at column level with this key.
#    Losing it means losing that data, so a generated key is persisted into the
#    storage volume and reused across redeploys.
# -----------------------------------------------------------------------------
KEY_FILE="/var/www/html/storage/app/.app_key"

if [ -n "${APP_KEY:-}" ]; then
    ok "APP_KEY provided via environment."
    printf '%s' "$APP_KEY" > "$KEY_FILE"
elif [ -s "$KEY_FILE" ]; then
    APP_KEY="$(cat "$KEY_FILE")"
    export APP_KEY
    ok "APP_KEY restored from persistent storage."
else
    APP_KEY="base64:$(head -c 32 /dev/urandom | base64)"
    export APP_KEY
    printf '%s' "$APP_KEY" > "$KEY_FILE"
    warn "No APP_KEY was provided — generated one and persisted it to the"
    warn "storage volume. Copy it into the Dokploy environment now:"
    warn "    APP_KEY=${APP_KEY}"
    warn "If that volume is ever lost, encrypted personal data becomes"
    warn "unrecoverable."
fi

chmod 600 "$KEY_FILE" 2>/dev/null || true
if [ "$(id -u)" = "0" ]; then
    chown www-data:www-data "$KEY_FILE" 2>/dev/null || true
fi

# -----------------------------------------------------------------------------
# 2b. Forwarded scheme for nginx.
#     Derived from APP_URL rather than from the client's X-Forwarded-Proto,
#     which is attacker-controlled. https in production behind Traefik; http
#     when developing locally over plain HTTP, so redirects don't jump scheme.
# -----------------------------------------------------------------------------
case "${APP_URL:-}" in
    http://*) FORWARDED_PROTO="http" ;;
    *)        FORWARDED_PROTO="https" ;;
esac

cat > /etc/nginx/conf.d/forwarded-proto.conf <<EOF
map \$host \$app_forwarded_proto {
    default ${FORWARDED_PROTO};
}
EOF
ok "Forwarded scheme set to ${FORWARDED_PROTO}."

# -----------------------------------------------------------------------------
# 2c. Upload ceiling, from a single variable.
#     nginx, PHP and the Laravel validation rule must agree: when they don't,
#     the smallest one wins and does so badly — nginx answers 413 with no body
#     after accepting zero bytes, so the browser's upload bar simply freezes and
#     the page has nothing to report. MAX_UPLOAD_MB drives all three
#     (config/app.php reads the same variable for the validation rule).
# -----------------------------------------------------------------------------
MAX_UPLOAD_MB="${MAX_UPLOAD_MB:-2048}"

cat > /etc/nginx/conf.d/upload-limit.conf <<EOF
client_max_body_size ${MAX_UPLOAD_MB}m;
EOF

cat > /usr/local/etc/php/conf.d/zz-upload-limit.ini <<EOF
; Generated by entrypoint.sh from MAX_UPLOAD_MB — do not edit by hand.
; The zz- prefix makes it load after custom.ini, so these win.
upload_max_filesize = ${MAX_UPLOAD_MB}M
post_max_size = ${MAX_UPLOAD_MB}M
EOF
ok "Upload ceiling set to ${MAX_UPLOAD_MB} MB."

# -----------------------------------------------------------------------------
# 3. Storage symlink (public/storage -> storage/app/public)
# -----------------------------------------------------------------------------
if [ ! -e public/storage ]; then
    php artisan storage:link --quiet && ok "Storage symlink created."
else
    ok "Storage symlink present."
fi

# -----------------------------------------------------------------------------
# 4. Drop caches from the previous image before touching the database.
#    A stale bootstrap/cache/config.php would otherwise shadow the new env.
# -----------------------------------------------------------------------------
php artisan config:clear --quiet || warn "config:clear failed; continuing."
php artisan route:clear  --quiet || warn "route:clear failed; continuing."
php artisan view:clear   --quiet || warn "view:clear failed; continuing."

# -----------------------------------------------------------------------------
# 5. Wait for the database, then migrate.
# -----------------------------------------------------------------------------
log "Waiting for database at ${DB_HOST:-mariadb}:${DB_PORT:-3306}..."
if ! retry 30 2 nc -z "${DB_HOST:-mariadb}" "${DB_PORT:-3306}"; then
    die "Database never became reachable. Check DB_HOST/DB_PORT and that the mariadb service is healthy."
fi
ok "Database reachable."

if [ "${RUN_MIGRATIONS:-true}" = "true" ]; then
    log "Running migrations..."
    retry 5 3 php artisan migrate --force --no-interaction \
        || die "Migrations failed. Refusing to start with a half-migrated schema."
    ok "Migrations applied."
else
    echo "[i] RUN_MIGRATIONS=false — skipping migrations."
fi

# -----------------------------------------------------------------------------
# 6. Seed reference data (roles, permissions, settings) once.
#    The marker lives in the storage volume so redeploys don't reseed.
# -----------------------------------------------------------------------------
SEED_MARKER="/var/www/html/storage/app/.db_seeded"

if [ "${RUN_DB_SEED_ON_FIRST_START:-true}" = "true" ] && [ ! -f "$SEED_MARKER" ]; then
    log "First start — seeding reference data..."
    if retry 3 3 php artisan db:seed --force --no-interaction; then
        touch "$SEED_MARKER"
        ok "Seed completed."
    else
        warn "Seed failed. The app will start, but roles/permissions may be missing."
    fi
else
    ok "Seed already applied (or disabled)."
fi

# -----------------------------------------------------------------------------
# 7. Initial administrator
# -----------------------------------------------------------------------------
if [ "${ENSURE_INITIAL_ADMIN_ON_EMPTY_DB:-true}" = "true" ]; then
    if [ -n "${INITIAL_ADMIN_EMAIL:-}" ] && [ -n "${INITIAL_ADMIN_PASSWORD:-}" ]; then
        log "Ensuring initial administrator..."
        php artisan app:create-initial-admin \
            --name="${INITIAL_ADMIN_NAME:-Amministratore}" \
            --email="${INITIAL_ADMIN_EMAIL}" \
            --password="${INITIAL_ADMIN_PASSWORD}" \
            --no-interaction \
            || warn "Initial admin creation failed (it may already exist)."
    else
        warn "INITIAL_ADMIN_EMAIL / INITIAL_ADMIN_PASSWORD not set — no admin created."
        warn "Set them in the Dokploy environment to get a login on first deploy."
    fi
fi

# -----------------------------------------------------------------------------
# 8. Warm caches. Done last, so the config cache captures the final env.
# -----------------------------------------------------------------------------
log "Warming caches..."
php artisan config:cache --quiet || warn "config:cache failed; continuing."
php artisan route:cache  --quiet || warn "route:cache failed; continuing."
php artisan view:cache   --quiet || warn "view:cache failed; continuing."
ok "Caches warmed."

echo "========================================="
echo "  TerManager2 — ready"
echo "========================================="

exec "$@"