#!/usr/bin/env bash
# Deploy AgentEvalTool to the t480 development server.
#
# Single entry point that guarantees the right order:
#   1. sync version (pyproject.toml → package.json)
#   2. build frontend
#   3. rsync code + dist to t480
#   4. rebuild image with version metadata (git SHA + build time)
#   5. restart containers (runs alembic upgrade head automatically)
#   6. verify /api/health reports the expected version
#
# Usage:
#   scripts/deploy-t480.sh            # full deploy
#   scripts/deploy-t480.sh --skip-build  # skip image rebuild (code-only hot reload)
#   scripts/deploy-t480.sh --dry-run     # print commands, don't run them
#
# The t480 host is configured in ~/.ssh/config as "sola-t480".
# Remote path: /opt/agenteval/

set -euo pipefail

HOST="${AGENTEVAL_DEPLOY_HOST:-sola-t480}"
REMOTE_DIR="${AGENTEVAL_DEPLOY_DIR:-/opt/agenteval}"
IMAGE_NAME="t480-agenteval"
COMPOSE_FILE="deploy/t480/docker-compose.yml"

SKIP_BUILD=0
DRY_RUN=0
for arg in "$@"; do
    case "$arg" in
        --skip-build) SKIP_BUILD=1 ;;
        --dry-run)    DRY_RUN=1 ;;
        -h|--help)    sed -n '2,18p' "$0"; exit 0 ;;
        *)            echo "unknown arg: $arg" >&2; exit 2 ;;
    esac
done

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
cd "$ROOT"

log()  { printf '\033[1;36m>> %s\033[0m\n' "$*"; }
warn() { printf '\033[1;33m!! %s\033[0m\n' "$*" >&2; }
die()  { printf '\033[1;31m!! %s\033[0m\n' "$*" >&2; exit 1; }
run()  {
    if [[ "$DRY_RUN" == "1" ]]; then
        printf '\033[2m[dry-run] %s\033[0m\n' "$*"
    else
        "$@"
    fi
}

# ── pre-flight ─────────────────────────────────────────────────────────
log "pre-flight: ssh connectivity"
run ssh -o ConnectTimeout=5 "$HOST" "echo ok >/dev/null" \
    || die "cannot reach $HOST via ssh"

log "pre-flight: sync version (pyproject.toml → package.json)"
run python3 scripts/sync_version.py
VERSION=$(python3 -c "import re; print(re.search(r'^version\s*=\s*\"([^\"]+)\"', open('pyproject.toml').read(), re.M).group(1))")
COMMIT=$(git rev-parse --short HEAD 2>/dev/null || echo "no-git")
BUILD_TIME=$(date -u +"%Y-%m-%dT%H:%M:%SZ")

log "version=$VERSION  commit=$COMMIT  built_at=$BUILD_TIME"

# ── frontend build ─────────────────────────────────────────────────────
if [[ ! -d frontend/web/node_modules ]]; then
    log "frontend: npm install"
    run bash -c "cd frontend/web && npm install --silent"
fi
log "frontend: npm run build"
run bash -c "cd frontend/web && npm run build"

# Sanity check: dist must contain the chunk referenced by index.html.
CHUNK=$(grep -oE '/assets/[^"]+\.js' frontend/web/dist/index.html | head -1 | sed 's|^/assets/||')
[[ -n "$CHUNK" && -f "frontend/web/dist/assets/$CHUNK" ]] \
    || die "frontend build produced no chunk (dist stale?)"
log "frontend: OK (chunk=$CHUNK)"

# ── rsync ──────────────────────────────────────────────────────────────
log "rsync → $HOST:$REMOTE_DIR"
run rsync -az --delete \
    --exclude='.git' \
    --exclude='node_modules' \
    --exclude='.venv' \
    --exclude='__pycache__' \
    --exclude='.pytest_cache' \
    --exclude='.ruff_cache' \
    --exclude='data' \
    --exclude='.env' \
    --exclude='config/config.json' \
    --exclude='*.db*' \
    ./ "$HOST:$REMOTE_DIR/"

# ── image rebuild ──────────────────────────────────────────────────────
if [[ "$SKIP_BUILD" == "1" ]]; then
    warn "skipping image rebuild (--skip-build)"
else
    log "docker build: $IMAGE_NAME:$VERSION"
    run ssh "$HOST" \
        "cd $REMOTE_DIR && docker compose -f $COMPOSE_FILE build \
            --build-arg BUILD_COMMIT=$COMMIT \
            --build-arg BUILD_TIME=$BUILD_TIME \
            agenteval"
    log "docker tag: $IMAGE_NAME:$VERSION + $IMAGE_NAME:latest"
    run ssh "$HOST" "\
        docker tag $IMAGE_NAME:latest $IMAGE_NAME:$VERSION 2>/dev/null || true && \
        docker tag $IMAGE_NAME:latest $IMAGE_NAME:latest"
fi

# ── restart ────────────────────────────────────────────────────────────
log "docker compose up -d"
run ssh "$HOST" "cd $REMOTE_DIR && docker compose -f $COMPOSE_FILE up -d"

# ── verify ─────────────────────────────────────────────────────────────
log "waiting for /api/health"
for i in $(seq 1 30); do
    BODY=$(ssh "$HOST" "curl -sf http://localhost:8001/api/health 2>/dev/null" || true)
    if [[ -n "$BODY" ]]; then break; fi
    sleep 1
done

[[ -n "$BODY" ]] || die "/api/health did not respond after 30s"
log "/api/health: $BODY"

REMOTE_VERSION=$(echo "$BODY" | python3 -c "import sys, json; print(json.load(sys.stdin).get('version', ''))")
REMOTE_COMMIT=$(echo "$BODY"  | python3 -c "import sys, json; print(json.load(sys.stdin).get('commit', ''))")

if [[ "$REMOTE_VERSION" != "$VERSION" ]]; then
    die "version mismatch! local=$VERSION remote=$REMOTE_VERSION (stale image?)"
fi
if [[ "$REMOTE_COMMIT" != "$COMMIT" && "$COMMIT" != "no-git" ]]; then
    die "commit mismatch! local=$COMMIT remote=$REMOTE_COMMIT (image not rebuilt?)"
fi

log "deploy OK: version=$VERSION commit=$COMMIT"
log "open http://192.168.8.145:8001 to verify"