#!/usr/bin/env bash
# Interactive version bump.
#
# Shows the current version, asks for the new version (with a sensible default:
# patch-level bump), and asks for release notes. Then:
#   1. Creates startos/versions/v<new>.ts
#   2. Updates startos/versions/index.ts (adds import, updates `current:`,
#      pushes old current into `other:`)
#
# If the file .release-notes-pending.txt exists in the project root, its
# contents are shown as the default release notes (just press Enter to accept).
# This is the convention Claude uses after making code changes. The file is
# deleted on a successful bump.
#
# Flags:
#   --from-deploy   Treat the absence of .release-notes-pending.txt as the
#                   signal that no new work needs to ship — exit 0 without
#                   bumping. Lets `make deploy` always include this step
#                   without forcing a redundant bump when the user (or a
#                   prior run) already bumped.
#
# Run standalone with `make bump`, or as the first step of `make deploy`.

set -euo pipefail

FROM_DEPLOY=0
for arg in "$@"; do
  case "$arg" in
    --from-deploy) FROM_DEPLOY=1 ;;
  esac
done

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
VERSIONS_DIR="$PROJECT_ROOT/startos/versions"
INDEX_FILE="$VERSIONS_DIR/index.ts"
PENDING_NOTES_FILE="$PROJECT_ROOT/.release-notes-pending.txt"

# When invoked from `make deploy`, treat a missing pending-notes file as
# "nothing new to ship — current version is already fresh, skip the bump."
# Standalone `make bump` always prompts.
if [ "$FROM_DEPLOY" = "1" ] && [ ! -f "$PENDING_NOTES_FILE" ]; then
  echo ""
  echo "  (No .release-notes-pending.txt — current version is already bumped. Skipping.)"
  echo ""
  exit 0
fi

# --- Discover current version ---
CURRENT_VAR="$(sed -nE "s/.*current:[[:space:]]*(v_[0-9_]+).*/\1/p" "$INDEX_FILE" | head -1)"
if [ -z "$CURRENT_VAR" ]; then
  echo "X  Could not find current version in $INDEX_FILE" >&2
  exit 1
fi

CURRENT_DOT="$(echo "$CURRENT_VAR" | sed 's/^v_//; s/_/./g')"
IFS='.' read -r MAJOR MINOR PATCH <<< "$CURRENT_DOT"
SUGGESTED="$MAJOR.$MINOR.$((PATCH + 1))"

echo ""
echo "═══════════════════════════════════════════"
echo "  Bumping version"
echo "═══════════════════════════════════════════"
echo ""
echo "  Current: $CURRENT_DOT"
echo ""

# --- Prompt for new version ---
read -r -p "  New version [$SUGGESTED]: " NEW_VERSION
NEW_VERSION="${NEW_VERSION:-$SUGGESTED}"

if ! [[ "$NEW_VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
  echo "X  Invalid version: '$NEW_VERSION' (expected format: x.y.z, e.g. 0.1.10)" >&2
  exit 1
fi

NEW_FILE="$VERSIONS_DIR/v${NEW_VERSION}.ts"
if [ -f "$NEW_FILE" ]; then
  echo "X  Version file already exists: $NEW_FILE" >&2
  echo "   (If you want to re-run, delete that file first.)" >&2
  exit 1
fi

NEW_VAR="v_$(echo "$NEW_VERSION" | tr '.' '_')"

# --- Prompt for release notes ---
# If Claude (or you) left suggested notes in .release-notes-pending.txt, show
# them as the default. Press Enter to accept, or type something different.
SUGGESTED_NOTES=""
if [ -f "$PENDING_NOTES_FILE" ]; then
  # Read the file, trim leading/trailing whitespace, collapse interior newlines
  # into spaces so it fits the one-line release-notes format.
  SUGGESTED_NOTES="$(tr '\n' ' ' < "$PENDING_NOTES_FILE" | sed -e 's/[[:space:]]\{1,\}/ /g' -e 's/^ //' -e 's/ $//')"
fi

echo ""
if [ -n "$SUGGESTED_NOTES" ]; then
  echo "  Suggested release notes (from .release-notes-pending.txt):"
  echo "    $SUGGESTED_NOTES"
  echo ""
  read -r -p "  Release notes (Enter to accept, or type new): " RELEASE_NOTES
  RELEASE_NOTES="${RELEASE_NOTES:-$SUGGESTED_NOTES}"
else
  read -r -p "  Release notes (one-liner, what changed in $NEW_VERSION?): " RELEASE_NOTES
fi

if [ -z "$RELEASE_NOTES" ]; then
  echo "X  Release notes are required" >&2
  exit 1
fi

# Escape for TypeScript single-quoted string: backslash first, then single quote
ESCAPED_NOTES="$(printf '%s' "$RELEASE_NOTES" | sed -e 's/\\/\\\\/g' -e "s/'/\\\\'/g")"

# Clean up partial state if anything below fails
cleanup_on_error() {
  [ -f "$NEW_FILE" ] && rm -f "$NEW_FILE"
  [ -f "$INDEX_FILE.tmp" ] && rm -f "$INDEX_FILE.tmp"
  [ -f "$INDEX_FILE.bak" ] && rm -f "$INDEX_FILE.bak"
}
trap cleanup_on_error ERR

# --- 1. Create new version file ---
cat > "$NEW_FILE" <<EOF
import { VersionInfo } from '@start9labs/start-sdk'

export const $NEW_VAR = VersionInfo.of({
  version: '$NEW_VERSION:0',
  releaseNotes: {
    en_US: '$ESCAPED_NOTES',
  },
  migrations: {
    up: async ({ effects }) => {},
    down: async ({ effects }) => {},
  },
})
EOF

# --- 2. Update index.ts ---
# Insert `import { v_NEW } from './vNEW'` right after the last existing version
# import, so the imports stay contiguous.
NEW_IMPORT="import { $NEW_VAR } from './v$NEW_VERSION'"

awk -v new_import="$NEW_IMPORT" '
  /^import \{ v_[0-9_]+ \} from/ { last_imp = NR }
  { lines[NR] = $0 }
  END {
    for (i = 1; i <= NR; i++) {
      print lines[i]
      if (i == last_imp) print new_import
    }
  }
' "$INDEX_FILE" > "$INDEX_FILE.tmp"
mv "$INDEX_FILE.tmp" "$INDEX_FILE"

# Point `current:` at the new version, and prepend the old current into `other:`.
# Use -i.bak for macOS/BSD + Linux/GNU sed compatibility.
sed -i.bak \
  -e "s/current: $CURRENT_VAR/current: $NEW_VAR/" \
  -e "s/other: \[/other: [$CURRENT_VAR, /" \
  "$INDEX_FILE"
rm -f "$INDEX_FILE.bak"

trap - ERR

# --- Clean up the pending-notes scratch file now that we've consumed it ---
if [ -f "$PENDING_NOTES_FILE" ]; then
  rm -f "$PENDING_NOTES_FILE"
fi

echo ""
echo "  ✓ Created startos/versions/v${NEW_VERSION}.ts"
echo "  ✓ Wired up in startos/versions/index.ts"
echo "  ✓ Version: $CURRENT_DOT → $NEW_VERSION"
echo ""