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

APP_ID="${1:-}"

if [ -z "$APP_ID" ]; then
  echo "Usage:"
  echo "  ./delete-app.sh <app-id>"
  exit 1
fi

CONFIG_FILE="/opt/appfactory/config/appfactory.env"

if [ -f "$CONFIG_FILE" ]; then
  source "$CONFIG_FILE"
fi

APPFACTORY_DIR="${APPFACTORY_DIR:-/opt/appfactory}"
WORKSPACE_DIR="${WORKSPACE_DIR:-/home/jiri/workspace}"

COMPOSE_FILE="$APPFACTORY_DIR/deploy/apps-compose.yml"
CATALOG_FILE="$APPFACTORY_DIR/apps/catalog.yml"
CADDY_FILE="$APPFACTORY_DIR/gateway/Caddyfile"

TOOLS_DIR="$WORKSPACE_DIR/appfactory-tools"

echo "Deleting app: $APP_ID"

if [ -n "${GITEA_URL:-}" ] && [ -n "${GITEA_TOKEN:-}" ] && [ -n "${GITEA_ORG:-}" ]; then
  echo "Deleting Gitea repository..."

  curl -sS -X DELETE \
    "$GITEA_URL/api/v1/repos/$GITEA_ORG/$APP_ID" \
    -H "Authorization: token $GITEA_TOKEN" || true
fi

echo "Stopping container..."
docker rm -f "$APP_ID" || true

echo "Removing image..."
docker rmi -f "$APP_ID:latest" || true

echo "Removing workspace..."
rm -rf "$WORKSPACE_DIR/$APP_ID"

python3 - "$APP_ID" "$COMPOSE_FILE" "$CATALOG_FILE" "$CADDY_FILE" <<'PY'
import sys
from pathlib import Path

app_id = sys.argv[1]
compose_file = Path(sys.argv[2])
catalog_file = Path(sys.argv[3])
caddy_file = Path(sys.argv[4])

def remove_block(lines, predicate):
    out = []
    i = 0

    while i < len(lines):
        line = lines[i]

        if predicate(line):
            indent = len(line) - len(line.lstrip())
            i += 1

            while i < len(lines):
                next_line = lines[i]

                if next_line.strip():
                    next_indent = len(next_line) - len(next_line.lstrip())

                    if next_indent <= indent:
                        break

                i += 1

            continue

        out.append(line)
        i += 1

    return out

if compose_file.exists():
    compose_lines = compose_file.read_text().splitlines()

    compose_lines = remove_block(
        compose_lines,
        lambda l: l.startswith(f"  {app_id}:")
    )

    compose_file.write_text("\n".join(compose_lines) + "\n")

if catalog_file.exists():
    catalog_lines = catalog_file.read_text().splitlines()

    catalog_lines = remove_block(
        catalog_lines,
        lambda l: l.strip() == f"- id: {app_id}"
    )

    catalog_file.write_text("\n".join(catalog_lines) + "\n")

if caddy_file.exists():
    caddy_lines = caddy_file.read_text().splitlines()

    caddy_lines = remove_block(
        caddy_lines,
        lambda l: f"/apps/{app_id}/*" in l
    )

    caddy_file.write_text("\n".join(caddy_lines) + "\n")
PY

echo "Regenerating generated files..."

"$TOOLS_DIR/scripts/generate-apps-compose.sh"
"$TOOLS_DIR/scripts/generate-caddyfile.sh"
"$TOOLS_DIR/scripts/generate-apps-page.sh"

echo "DONE"