#!/usr/bin/env bash
# sync-ports.sh — regenerate infrastructure/.env.ports from infrastructure/ports.yaml.
#
# Single source of truth: ports.yaml. .env.ports is a derived artifact, committed
# alongside for ergonomics (sourced by service start scripts + manage-apps).
#
# Convention: each YAML leaf "<group>.<dotted.name>: <port>" becomes
# "<UPPER_SNAKE_NAME>_PORT=<port>" (or "..._HEALTH_PORT" for the workers group,
# whose ports are health endpoints, not service binds).
#
# Usage: pnpm sync-ports  (from @platform/)
#    or: bash scripts/sync-ports.sh  (from @platform/)
#
# Exit codes:
#   0  success
#   1  ports.yaml missing or unparseable
#   2  yq not installed

set -euo pipefail

script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
platform_root="$(cd "$script_dir/.." && pwd)"
ports_yaml="$platform_root/infrastructure/ports.yaml"
env_ports="$platform_root/infrastructure/.env.ports"

if [[ ! -f "$ports_yaml" ]]; then
  echo "error: $ports_yaml not found" >&2
  exit 1
fi

if ! command -v yq >/dev/null 2>&1; then
  echo "error: yq not installed (brew install yq / apt install yq)" >&2
  exit 2
fi

to_env_var() {
  local group="$1" name="$2"
  local suffix="PORT"
  if [[ "$group" == "workers" ]]; then
    suffix="HEALTH_PORT"
  fi
  echo "$name" \
    | tr '[:lower:]' '[:upper:]' \
    | tr '.-' '_' \
    | sed "s/$/_$suffix/"
}

tmp="$(mktemp)"
trap 'rm -f "$tmp"' EXIT

{
  echo "# GENERATED FROM infrastructure/ports.yaml — DO NOT EDIT BY HAND."
  echo "# Regenerate: \`pnpm sync-ports\` (from @platform/)."
  echo ""

  for group in apis ai_instances workers frontends infrastructure; do
    label="$(echo "$group" | tr '[:lower:]_' '[:upper:] ')"
    echo "# $label"

    keys="$(yq -r ".${group} // {} | keys | .[]" "$ports_yaml")"
    while IFS= read -r key; do
      [[ -z "$key" ]] && continue
      port="$(yq -r ".${group}[\"${key}\"]" "$ports_yaml")"
      var="$(to_env_var "$group" "$key")"
      echo "${var}=${port}"
    done <<< "$keys"
    echo ""
  done
} > "$tmp"

mv "$tmp" "$env_ports"
trap - EXIT

echo "Wrote $env_ports"