#!/bin/bash
set -euo pipefail
set +H

ENTRYPOINT="$1"
FLAGS_STRING="${2:-}"
IFS=' ' read -r -a DENOCOMPILE_FLAGS <<< "$FLAGS_STRING"

TAG_NAME=$(git describe --tags --abbrev=0)
REPO_NAME=$(basename -s .git "$(git config --get remote.origin.url)")
OWNER_NAME=$(basename "$(dirname "$(git config --get remote.origin.url)")")
TMPDIR=$(mktemp -d)

echo "Building for tag: $TAG_NAME"
echo "Using entrypoint: $ENTRYPOINT"
echo "With flags: ${DENOCOMPILE_FLAGS[*]}"

platforms=(
  "x86_64-unknown-linux-gnu"
  "x86_64-pc-windows-msvc"
  "x86_64-apple-darwin"
)

for target in "${platforms[@]}"; do
  echo "Compiling for $target"
  outfile="${TMPDIR}/${REPO_NAME}-${target}"
  [[ "$target" == *"windows"* ]] && outfile="${outfile}.exe"

  deno compile \
    --target="$target" \
    --output="$outfile" \
    "${DENOCOMPILE_FLAGS[@]}" \
    "$ENTRYPOINT"
done

# Generate changelog
PREV_TAG=$(git describe --tags --abbrev=0 "$TAG_NAME"^ 2>/dev/null || echo "")
if [[ -n "$PREV_TAG" ]]; then
  COMMITS=$(git log "$PREV_TAG..$TAG_NAME" --pretty=format:"%s (%an)" --no-merges)
else
  COMMITS=$(git log --pretty=format:"%s (%an)" --no-merges)
fi

CHANGELOG=""
append_section() {
  local TYPE="$1"
  local TITLE="$2"
  local EMOJI="$3"
  local MATCHED=$(echo "$COMMITS" | grep -E "^${TYPE}: " || true)
  if [[ -n "$MATCHED" ]]; then
    CHANGELOG+="## $EMOJI $TITLE\n"
    while IFS= read -r line; do
      local CLEANED=$(echo "$line" | sed -E "s/^${TYPE}: //")
      CHANGELOG+="- $CLEANED\n"
    done <<< "$MATCHED"
    CHANGELOG+="\n"
  fi
}
append_section "feat" "Features" "✨"
append_section "fix" "Fixes" "🐛"
# append_section "chore" "Chores" "🧹"

# Fallback if no commits found
[[ -z "$CHANGELOG" ]] && CHANGELOG="No commit history found."

# Inject into manual changelog if available
MANUAL_SECTION=""
if [[ -f "CHANGELOG.md" ]]; then
  MANUAL_SECTION=$(awk "/^## \\[?$TAG_NAME\\]? /{flag=1; next} /^## /{flag=0} flag" CHANGELOG.md)
  if [[ "$MANUAL_SECTION" == *"<!-- auto-changelog -->"* ]]; then
    MANUAL_SECTION=$(echo "$MANUAL_SECTION" | sed "s|<!-- auto-changelog -->|$CHANGELOG|")
  fi
fi

RELEASE_BODY="${MANUAL_SECTION:-$CHANGELOG}"
RELEASE_BODY_ESCAPED=$(printf "%s" "$RELEASE_BODY" | sed ':a;N;$!ba;s/\n/\\n/g; s/"/\\"/g')

# Determine prerelease
IS_PRERELEASE="false"
[[ "$TAG_NAME" =~ -[0-9A-Za-z] ]] && IS_PRERELEASE="true"

# Create release
API_URL="${CI_SERVER_URL:-https://git.cyborggrizzly.com}/api/v1"
RELEASE_ENDPOINT="$API_URL/repos/$OWNER_NAME/$REPO_NAME/releases"

RELEASE_JSON=$(curl -sS -X POST "$RELEASE_ENDPOINT" \
  -H "Authorization: token $GITEA_TOKEN" \
  -H "Content-Type: application/json" \
  -d @- <<EOF
{
  "tag_name": "$TAG_NAME",
  "name": "$TAG_NAME",
  "draft": false,
  "prerelease": $IS_PRERELEASE,
  "body": "$RELEASE_BODY_ESCAPED"
}
EOF
)

UPLOAD_URL=$(echo "$RELEASE_JSON" | jq -r '.upload_url // .assets_url')
for file in "$TMPDIR"/*; do
  FILENAME=$(basename "$file")
  echo "Uploading $FILENAME..."
  curl -sS -X POST "$UPLOAD_URL" \
    -H "Authorization: token $GITEA_TOKEN" \
    -F name="$FILENAME" \
    -F attachment=@"$file"
done