#!/bin/bash
set -euo pipefail
# Builds (and, unless SKIP_PUSH=1, pushes) the sap-drawio image from the app
# source repo. Both the floating "latest" tag and the version-pinned tag
# (kept in sync with config.json "version") are built and pushed.
#
# Before building, this script (re)generates a deterministic, catalog-only
# seed DB (backend/data/seed.db) from the developer's live app.db. This is
# REQUIRED — the live app.db is WAL-mode with uncommitted -wal data and a
# full conversion/history table, neither of which may ever ship in the image
# (see sap-drawio Phase-1 code review FIX B1 / M2). The live app.db is never
# opened directly by this script; it is only ever `cp`-copied at the OS
# level, so it cannot be mutated by an incidental SQLite WAL checkpoint.
#
# Env overrides:
#   IMAGE_NAME   default git.alexzaw.dev/alexz/sap-drawio
#   IMAGE_TAG    default latest
#   VERSION_TAG  default 1.0.0 (must match config.json "version")
#   SRC          default ~/projects/sap-architecture-diagrams
#   SKIP_PUSH    set to 1 to build both tags locally only (no push) — used
#                for pre-push smoke-testing.

IMAGE_NAME="${IMAGE_NAME:-git.alexzaw.dev/alexz/sap-drawio}"
IMAGE_TAG="${IMAGE_TAG:-latest}"
VERSION_TAG="${VERSION_TAG:-1.0.0}"
SRC="${SRC:-$HOME/projects/sap-architecture-diagrams}"
SKIP_PUSH="${SKIP_PUSH:-0}"

cd "$SRC"

echo "== [1/3] Generating deterministic catalog-only seed DB =="
SEED_WORK="$(mktemp -d)"
trap 'rm -rf "$SEED_WORK"' EXIT

# Copy the live dev DB (main + WAL + SHM, if present) at the OS level ONLY.
# backend/data/app.db is NEVER opened directly by this script.
cp backend/data/app.db "$SEED_WORK/app.db"
[ -f backend/data/app.db-wal ] && cp backend/data/app.db-wal "$SEED_WORK/app.db-wal"
[ -f backend/data/app.db-shm ] && cp backend/data/app.db-shm "$SEED_WORK/app.db-shm"

# .backup against the COPY (never the original) merges any committed WAL
# frames into a single consistent snapshot file.
sqlite3 "$SEED_WORK/app.db" ".backup '$SEED_WORK/seed.db'"

# Clear ONLY the conversion/history table (db.py: insert_conversion() writes
# to `conversions`). Every catalog/icon/service/brand/override row is kept.
sqlite3 "$SEED_WORK/seed.db" "DELETE FROM conversions;"
sqlite3 "$SEED_WORK/seed.db" "VACUUM;"

echo "-- Catalog row counts (source vs seed) --"
for t in icon_assets sap_services label_overrides schema_meta; do
  src_count=$(sqlite3 "$SEED_WORK/app.db" "SELECT COUNT(*) FROM $t;")
  seed_count=$(sqlite3 "$SEED_WORK/seed.db" "SELECT COUNT(*) FROM $t;")
  printf '  %-16s source=%-8s seed=%-8s\n' "$t" "$src_count" "$seed_count"
  if [ "$src_count" != "$seed_count" ]; then
    echo "ERROR: catalog table $t row count mismatch (source=$src_count seed=$seed_count)" >&2
    exit 1
  fi
done
conv_count=$(sqlite3 "$SEED_WORK/seed.db" "SELECT COUNT(*) FROM conversions;")
echo "  conversions      seed=$conv_count (must be 0)"
if [ "$conv_count" != "0" ]; then
  echo "ERROR: seed.db still has $conv_count conversion/history rows" >&2
  exit 1
fi

cp "$SEED_WORK/seed.db" backend/data/seed.db
echo "Seed written to backend/data/seed.db ($(du -h backend/data/seed.db | cut -f1))"

echo "== [2/3] Building image (tags: ${IMAGE_TAG}, ${VERSION_TAG}) =="
sudo docker build "$@" -t "${IMAGE_NAME}:${IMAGE_TAG}" -t "${IMAGE_NAME}:${VERSION_TAG}" .

if [ "$SKIP_PUSH" = "1" ]; then
  echo "== [3/3] SKIP_PUSH=1 — not pushing. Built locally: ${IMAGE_NAME}:${IMAGE_TAG}, ${IMAGE_NAME}:${VERSION_TAG} =="
  exit 0
fi

echo "== [3/3] Pushing image =="
sudo docker push "${IMAGE_NAME}:${IMAGE_TAG}"
sudo docker push "${IMAGE_NAME}:${VERSION_TAG}"