#!/bin/bash
# Merges the latest upstream stable release tag into the lotus branch, runs the
# local quality gates, and PUSHES. It no longer builds or deploys itself: the push
# triggers the normal Gitea CI run and lotus_deploy.sh deploys only once the
# "Build & Quality Checks" status is green — the same path every other lotus
# commit takes (cinny#98: this script used to build+deploy+push, bypassing CI).
# Triggered via webhook by LotusBot !cinny-update command.
# Requires:
#   /etc/cinny-monitor.env  — MATRIX_TOKEN, MATRIX_SERVER, MATRIX_ROOM
#   /opt/lotus-cinny/       — git clone of code.lotusguild.org/LotusGuild/cinny
#                             with upstream remote: https://github.com/cinnyapp/cinny.git
set -euo pipefail

REPO_DIR="/opt/lotus-cinny"
STATE_FILE="/var/lib/cinny-monitor/last-upstream-tag"
ENV_FILE="/etc/cinny-monitor.env"
LOG="/var/log/cinny-build.log"

exec >> "$LOG" 2>&1
echo "=== $(date) === Cinny build triggered ==="

[ -f "$ENV_FILE" ] || { echo "ERROR: $ENV_FILE missing"; exit 1; }
set -a
# shellcheck source=/dev/null
source "$ENV_FILE"
set +a

matrix_notify() {
    local msg="$1"
    echo "[notify] $msg"
    [ -z "${MATRIX_TOKEN:-}" ] && return
    export _NOTIFY_MSG="$msg"
    python3 << 'PYEOF'
import urllib.request, urllib.parse, json, time, sys, os
token  = os.environ.get('MATRIX_TOKEN', '')
server = os.environ.get('MATRIX_SERVER', '').rstrip('/')
room   = os.environ.get('MATRIX_ROOM', '')
msg    = os.environ.get('_NOTIFY_MSG', '')
if not all([token, server, room, msg]):
    sys.exit(0)
txn  = str(int(time.time() * 1000))
api  = f"{server}/_matrix/client/v3/rooms/{urllib.parse.quote(room, safe='')}/send/m.room.message/{txn}"
body = json.dumps({"msgtype": "m.text", "body": msg}).encode()
req  = urllib.request.Request(api, data=body, method="PUT", headers={
    "Authorization": f"Bearer {token}", "Content-Type": "application/json"
})
try:
    urllib.request.urlopen(req, timeout=10)
except Exception as e:
    print(f"Notify failed: {e}", file=sys.stderr)
PYEOF
}

if [ ! -d "$REPO_DIR/.git" ]; then
    matrix_notify "cinny-build: FAILED — $REPO_DIR is not a git repo. Clone the lotus fork first."
    exit 1
fi

cd "$REPO_DIR"

if ! git remote | grep -q '^upstream$'; then
    matrix_notify "cinny-build: FAILED — upstream remote missing. Run: git remote add upstream https://github.com/cinnyapp/cinny.git"
    exit 1
fi

matrix_notify "cinny-build: fetching upstream tags..."

git fetch upstream --tags --no-recurse-submodules -q

# Get latest stable release tag from GitHub API
LATEST_TAG=$(curl -sf \
    -H "Accept: application/vnd.github.v3+json" \
    -H "User-Agent: lotus-cinny-monitor/1.0" \
    "https://api.github.com/repos/cinnyapp/cinny/releases/latest" | python3 -c "import sys,json; print(json.load(sys.stdin)['tag_name'])")

CURRENT_TAG=$(git describe --tags --exact-match HEAD 2>/dev/null || git log -1 --format='%D' | grep -oP 'tag: \K[^,]+' | head -1 || echo "untagged")
echo "Current: $CURRENT_TAG — Target: $LATEST_TAG"

if [ "$CURRENT_TAG" = "$LATEST_TAG" ]; then
    matrix_notify "cinny-build: already on $LATEST_TAG, nothing to do."
    exit 0
fi

matrix_notify "cinny-build: merging $LATEST_TAG into lotus branch..."

if ! git merge "$LATEST_TAG" --no-edit 2>&1; then
    git merge --abort 2>/dev/null || true
    matrix_notify "cinny-build: FAILED — merge conflict at $LATEST_TAG. SSH to LXC 106 and resolve manually. See /var/log/cinny-build.log"
    exit 1
fi

# ── Local pre-flight (same gates CI runs, minus the build) ──────────────────
# An upstream merge touches hundreds of files we didn't write, so catch an
# obviously broken merge here before it lands on origin. CI is still the
# authority: a failure here leaves the merge commit LOCAL (not pushed) so it can
# be inspected/fixed on the box.
echo "Running npm ci..."
if ! npm ci 2>&1 | tail -5; then
    matrix_notify "cinny-build: FAILED — npm ci failed after merging $LATEST_TAG. Merge is local only (not pushed). See /var/log/cinny-build.log"
    exit 1
fi

for gate in "npm run typecheck" "npm run check:eslint" "npm run check:prettier" "npm test"; do
    echo "Gate: $gate"
    if ! $gate 2>&1 | tail -20; then
        matrix_notify "cinny-build: FAILED — '$gate' failed after merging $LATEST_TAG. Merge is local only (not pushed). SSH to LXC 106 to fix forward."
        exit 1
    fi
done

# ── Hand off to CI + lotus_deploy.sh ────────────────────────────────────────
# Pushing is what deploys: Gitea CI builds and runs every gate, and the
# lotus-deploy webhook polls the "Build & Quality Checks" status and only then
# rsyncs dist/ to the web root (preserving the live config.json). Nothing is copied
# to the web root from here.
git push origin lotus

# Update state file so upstream-check knows we're on this tag
echo "$LATEST_TAG" > "$STATE_FILE"

matrix_notify "cinny-build: merged $LATEST_TAG and pushed — CI is running; lotus_deploy.sh will go live once 'Build & Quality Checks' passes (~11 min). Watch https://code.lotusguild.org/LotusGuild/cinny/actions"
echo "=== Merge pushed: $LATEST_TAG (deploy via CI) ==="