#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ENV_FILE="$SCRIPT_DIR/.env"

if [ ! -f "$ENV_FILE" ]; then
  echo "No .env found. Copy .env.example to .env and set MYSQL_PASSWORD." >&2
  exit 1
fi

set -a
# shellcheck disable=SC1090
. "$ENV_FILE"
set +a

if [ -z "${MYSQL_PASSWORD:-}" ] || [ "${MYSQL_PASSWORD}" = "CHANGE_ME" ]; then
  echo "MYSQL_PASSWORD is unset or still the placeholder in .env." >&2
  echo "Generate one with: openssl rand -base64 32" >&2
  exit 1
fi

: "${GITEA_UID:=1000}"
: "${GITEA_GID:=1000}"
: "${GITEA_DATA_DIR:=./data}"
: "${GITEA_CONFIG_DIR:=./config}"
: "${NGINX_CONFIG_DIR:=./nginx}"

resolve_path() {
  case "$1" in
    /*) printf '%s\n' "$1" ;;
    *) printf '%s/%s\n' "$SCRIPT_DIR" "$1" ;;
  esac
}

DATA_DIR="$(resolve_path "$GITEA_DATA_DIR")"
CONFIG_DIR="$(resolve_path "$GITEA_CONFIG_DIR")"
NGINX_DIR="$(resolve_path "$NGINX_CONFIG_DIR")"

mkdir -p "$DATA_DIR" "$CONFIG_DIR" "$NGINX_DIR"

# Only the Gitea bind mounts need this; MySQL uses a named volume and manages
# its own ownership.
chown_cmd=(chown -R "${GITEA_UID}:${GITEA_GID}" "$DATA_DIR" "$CONFIG_DIR")
if [ "$(id -u)" -ne 0 ]; then
  if command -v sudo >/dev/null 2>&1; then
    sudo "${chown_cmd[@]}"
  else
    echo "Need ownership change to ${GITEA_UID}:${GITEA_GID}; re-run as root or with sudo" >&2
    exit 1
  fi
else
  "${chown_cmd[@]}"
fi

if docker compose version >/dev/null 2>&1; then
  COMPOSE_CMD=(docker compose)
elif command -v docker-compose >/dev/null 2>&1; then
  COMPOSE_CMD=(docker-compose)
else
  echo "docker compose not found" >&2
  exit 1
fi

(cd "$SCRIPT_DIR" && "${COMPOSE_CMD[@]}" up -d)

cat <<EOF

Stack is up. If this is the first run, create the admin user:

  ${COMPOSE_CMD[*]} exec -u git gitea gitea admin user create \\
    --username admin --email you@example.com --random-password --admin

EOF