#!/usr/bin/env bash

betternas_default_clone_name() {
  local repo_path="${1-}"
  local repo_name

  repo_name="$(basename "$repo_path")"

  case "$repo_name" in
    betterNAS)
      printf '%s' "betternas-main"
      ;;
    *)
      printf '%s' "$repo_name"
      ;;
  esac
}

betternas_default_compose_project_seed() {
  local repo_path="${1-}"
  local clone_name="${2-}"

  if [[ -n "$clone_name" ]]; then
    printf '%s' "$clone_name"
    return 0
  fi

  betternas_default_clone_name "$repo_path"
}

betternas_normalize_compose_project_name() {
  local raw_value="${1-}"
  local value

  value="${raw_value,,}"
  value="$(
    printf '%s' "$value" | sed -E \
      -e 's/[^a-z0-9_-]+/-/g' \
      -e 's/^[^a-z0-9]+//' \
      -e 's/[-_]+$//' \
      -e 's/-+/-/g'
  )"

  if [[ -z "$value" ]]; then
    printf 'Unable to derive a valid Docker Compose project name from %q.\n' "$raw_value" >&2
    return 1
  fi

  printf '%s' "$value"
}

betternas_resolve_compose_project_name() {
  local repo_path="${1-}"
  local override="${2-}"
  local clone_name="${3-}"
  local seed

  if [[ -n "$override" ]]; then
    seed="$override"
  else
    seed="$(betternas_default_compose_project_seed "$repo_path" "$clone_name")"
  fi

  betternas_normalize_compose_project_name "$seed"
}

betternas_default_ports() {
  local repo_path="${1-}"
  local clone_name="${2-}"
  local hash
  local slot
  local base

  if [[ -z "$clone_name" ]]; then
    clone_name="$(betternas_default_clone_name "$repo_path")"
  fi

  case "$clone_name" in
    betternas-main)
      printf '%s %s %s\n' "8080" "3090" "3001"
      return 0
      ;;
    betterNAS-runtime)
      printf '%s %s %s\n' "41080" "41090" "41001"
      return 0
      ;;
    betterNAS-control)
      printf '%s %s %s\n' "42080" "42090" "42001"
      return 0
      ;;
    betterNAS-node)
      printf '%s %s %s\n' "43080" "43090" "43001"
      return 0
      ;;
  esac

  hash="$(printf '%s' "$repo_path" | cksum | awk '{print $1}')"
  slot=$((hash % 1000))
  base=$((45000 + slot * 20))

  printf '%s %s %s\n' "$base" "$((base + 10))" "$((base + 1))"
}

betternas_write_env_assignment() {
  local key="${1-}"
  local value="${2-}"

  printf '%s=%q\n' "$key" "$value"
}

betternas_write_agent_env_file() {
  local env_path="${1-}"
  local repo_path="${2-}"
  local clone_name
  local compose_project_name
  local nextcloud_port
  local node_agent_port
  local control_plane_port

  clone_name="$(betternas_default_clone_name "$repo_path")"
  compose_project_name="$(betternas_resolve_compose_project_name "$repo_path" "" "$clone_name")"
  read -r nextcloud_port node_agent_port control_plane_port <<<"$(betternas_default_ports "$repo_path" "$clone_name")"

  {
    echo "# Generated by pnpm agent:bootstrap"
    betternas_write_env_assignment "BETTERNAS_CLONE_NAME" "$clone_name"
    betternas_write_env_assignment "COMPOSE_PROJECT_NAME" "$compose_project_name"
    betternas_write_env_assignment "BETTERNAS_CONTROL_PLANE_PORT" "$control_plane_port"
    betternas_write_env_assignment "BETTERNAS_NODE_AGENT_PORT" "$node_agent_port"
    betternas_write_env_assignment "BETTERNAS_NEXTCLOUD_PORT" "$nextcloud_port"
    betternas_write_env_assignment "BETTERNAS_EXPORT_PATH" ".state/${clone_name}/export"
    betternas_write_env_assignment "BETTERNAS_VERSION" "local-dev"
    betternas_write_env_assignment "BETTERNAS_CONTROL_PLANE_CLIENT_TOKEN" "${clone_name}-local-client-token"
    betternas_write_env_assignment "BETTERNAS_CONTROL_PLANE_NODE_BOOTSTRAP_TOKEN" "${clone_name}-local-node-bootstrap-token"
    betternas_write_env_assignment "BETTERNAS_DAV_AUTH_SECRET" "${clone_name}-local-dav-auth-secret"
    betternas_write_env_assignment "BETTERNAS_DAV_CREDENTIAL_TTL" "1h"
    betternas_write_env_assignment "BETTERNAS_NODE_MACHINE_ID" "${clone_name}-node"
    betternas_write_env_assignment "BETTERNAS_NODE_DISPLAY_NAME" "${clone_name} node"
    betternas_write_env_assignment "BETTERNAS_NODE_DIRECT_ADDRESS" "http://localhost:${node_agent_port}"
    betternas_write_env_assignment "BETTERNAS_EXAMPLE_MOUNT_URL" "http://localhost:${node_agent_port}/dav/"
    betternas_write_env_assignment "NEXTCLOUD_BASE_URL" "http://localhost:${nextcloud_port}"
    betternas_write_env_assignment "NEXTCLOUD_ADMIN_USER" "admin"
    betternas_write_env_assignment "NEXTCLOUD_ADMIN_PASSWORD" "admin"
  } >"$env_path"
}