#!/usr/bin/env bash
# Shared helpers for scripts/ci/*.sh.
# Every script in this directory is meant to run identically in CI and on a
# developer's machine - no Gitea/GitHub-specific built-in actions, just bash.
set -euo pipefail

log() {
  echo "[$(date -u +'%Y-%m-%dT%H:%M:%SZ')] $*"
}

fail() {
  echo "[$(date -u +'%Y-%m-%dT%H:%M:%SZ')] ERROR: $*" >&2
  exit 1
}

# Repo root, regardless of caller's cwd.
CI_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"

# Registry configuration. All values come from the environment (CI secrets or
# a developer's shell) - nothing is hardcoded, per project convention.
REGISTRY="${REGISTRY:-}"
REGISTRY_OWNER="${REGISTRY_OWNER:-}"
REGISTRY_USER="${REGISTRY_USER:-}"
REGISTRY_TOKEN="${REGISTRY_TOKEN:-}"

GIT_SHA="$(git -C "$CI_ROOT" rev-parse --short HEAD)"

require_registry_vars() {
  [[ -n "$REGISTRY" ]] || fail "REGISTRY env var is required (e.g. gitea.example.com)"
  [[ -n "$REGISTRY_OWNER" ]] || fail "REGISTRY_OWNER env var is required (e.g. your gitea org/user)"
}

# Populates API_IMAGE / ADMIN_IMAGE, e.g. gitea.example.com/james/miccheck-api
image_names() {
  require_registry_vars
  API_IMAGE="$REGISTRY/$REGISTRY_OWNER/miccheck-api"
  ADMIN_IMAGE="$REGISTRY/$REGISTRY_OWNER/miccheck-admin"
}

# Installs .NET into $CI_ROOT/.dotnet via the vendored dotnet-install.sh if
# `dotnet` isn't already on PATH, then prepends it to PATH for this process.
# Keeps bare runners (no SDK preinstalled) working the same as a dev machine.
ensure_dotnet() {
  if command -v dotnet > /dev/null 2>&1; then
    return 0
  fi

  local install_dir="$CI_ROOT/.dotnet"
  if [[ ! -x "$install_dir/dotnet" ]]; then
    log "dotnet not found on PATH; installing .NET SDK via dotnet-install.sh"
    bash "$CI_ROOT/dotnet-install.sh" --channel LTS --install-dir "$install_dir"
  fi
  export PATH="$install_dir:$PATH"
  export DOTNET_ROOT="$install_dir"
}

# Installs Node.js into $CI_ROOT/.node from the official prebuilt tarball if
# `npm` isn't already on PATH, then prepends it to PATH for this process.
# Mirrors ensure_dotnet() above - keeps bare runners (no Node preinstalled,
# e.g. the self-hosted qa runner) working the same as a dev machine.
ensure_node() {
  if command -v npm > /dev/null 2>&1; then
    return 0
  fi

  local node_version="22.14.0"
  local install_dir="$CI_ROOT/.node"
  if [[ ! -x "$install_dir/bin/node" ]]; then
    log "node not found on PATH; installing Node.js v$node_version"
    local tarball="node-v${node_version}-linux-x64"
    curl -fsSL "https://nodejs.org/dist/v${node_version}/${tarball}.tar.xz" -o "/tmp/${tarball}.tar.xz"
    mkdir -p "$install_dir"
    tar -xJf "/tmp/${tarball}.tar.xz" -C "$install_dir" --strip-components=1
    rm -f "/tmp/${tarball}.tar.xz"
  fi
  export PATH="$install_dir/bin:$PATH"
}

registry_login() {
  require_registry_vars
  [[ -n "$REGISTRY_USER" ]] || fail "REGISTRY_USER env var is required to push images"
  [[ -n "$REGISTRY_TOKEN" ]] || fail "REGISTRY_TOKEN env var is required to push images"
  log "Logging in to $REGISTRY as $REGISTRY_USER"
  echo "$REGISTRY_TOKEN" | docker login "$REGISTRY" -u "$REGISTRY_USER" --password-stdin
}