#!/bin/bash
# release.sh — build and publish a PhotoPhetch release to Gitea
#
# Usage (on your Mac after pulling tagged commit):
#   ./release.sh
#
# The release version and notes are read from the current git tag and
# releases/<tag>.md — both committed by the dev machine before tagging.
#
# Requires GITEA_TOKEN environment variable.
# Get a token: https://git.bolenpad.com/user/settings/applications
# Add to ~/.zshrc: export GITEA_TOKEN=your_token_here

set -euo pipefail

# ── Config ───────────────────────────────────────────────────────────────────
GITEA_URL="https://git.bolenpad.com"
GITEA_USER="kbolen"
GITEA_REPO="photophetch"

# ── Resolve version from current git tag ─────────────────────────────────────
TAG=$(git describe --exact-match --tags HEAD 2>/dev/null || echo "")
if [ -z "$TAG" ]; then
    echo "ERROR: HEAD is not on a tag. Pull the latest and checkout the release tag."
    echo "  git fetch --tags && git checkout v1.0.0"
    exit 1
fi

VERSION="${TAG#v}"  # strip leading 'v'
echo "→ Building release $TAG (version $VERSION)"

# ── Read release notes from releases/<tag>.md ────────────────────────────────
NOTES_FILE="releases/${TAG}.md"
if [ ! -f "$NOTES_FILE" ]; then
    echo "ERROR: Release notes file not found: $NOTES_FILE"
    echo "  The dev machine should have committed this before tagging."
    exit 1
fi
NOTES=$(cat "$NOTES_FILE")
echo "→ Release notes: $NOTES_FILE"

# ── Gitea token — from macOS Keychain, env var, or prompt ────────────────────
if [ -z "${GITEA_TOKEN:-}" ]; then
    # Try macOS Keychain first
    GITEA_TOKEN=$(security find-generic-password -a kbolen -s gitea-photophetch -w 2>/dev/null || echo "")
fi
if [ -z "${GITEA_TOKEN:-}" ]; then
    echo "No token found in Keychain or environment."
    echo "Store it once with:"
    echo "  security add-generic-password -a kbolen -s gitea-photophetch -w YOUR_TOKEN"
    read -rsp "Or enter token now: " GITEA_TOKEN
    echo
fi

# ── Check packageVersion matches tag ─────────────────────────────────────────
GRADLE_VERSION=$(grep 'packageVersion' build.gradle.kts | sed 's/.*"\(.*\)".*/\1/')
if [ "$GRADLE_VERSION" != "$VERSION" ]; then
    echo "WARNING: build.gradle.kts packageVersion ($GRADLE_VERSION) != tag version ($VERSION)"
    echo "Continue anyway? [y/N]"
    read -r CONFIRM
    [[ "$CONFIRM" == "y" || "$CONFIRM" == "Y" ]] || exit 1
fi

# ── Build DMG ─────────────────────────────────────────────────────────────────
echo "→ Building DMG (this takes a few minutes)..."
./gradlew packageDmg

DMG_PATH=$(find build/compose/binaries/main/dmg -name "*.dmg" | head -1)
if [ -z "$DMG_PATH" ]; then
    echo "ERROR: No DMG found in build/compose/binaries/main/dmg/"
    exit 1
fi
DMG_NAME=$(basename "$DMG_PATH")
echo "→ Built: $DMG_PATH"

# ── Check release doesn't already exist ──────────────────────────────────────
EXISTING=$(curl -s -o /dev/null -w "%{http_code}" \
    "${GITEA_URL}/api/v1/repos/${GITEA_USER}/${GITEA_REPO}/releases/tags/${TAG}" \
    -H "Authorization: token ${GITEA_TOKEN}")
if [ "$EXISTING" = "200" ]; then
    echo "ERROR: Release $TAG already exists on Gitea."
    exit 1
fi

# ── Create Gitea release ──────────────────────────────────────────────────────
echo "→ Creating Gitea release $TAG..."
# Escape notes for JSON
NOTES_JSON=$(echo "$NOTES" | python3 -c "import sys,json; print(json.dumps(sys.stdin.read()))")

RELEASE_RESPONSE=$(curl -s -X POST \
    "${GITEA_URL}/api/v1/repos/${GITEA_USER}/${GITEA_REPO}/releases" \
    -H "Authorization: token ${GITEA_TOKEN}" \
    -H "Content-Type: application/json" \
    -d "{
        \"tag_name\": \"${TAG}\",
        \"name\": \"PhotoPhetch ${TAG}\",
        \"body\": ${NOTES_JSON},
        \"draft\": false,
        \"prerelease\": false
    }")

RELEASE_ID=$(echo "$RELEASE_RESPONSE" | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])" 2>/dev/null)
if [ -z "$RELEASE_ID" ]; then
    echo "ERROR: Failed to create release. Response:"
    echo "$RELEASE_RESPONSE"
    exit 1
fi
echo "→ Created release ID $RELEASE_ID"

# ── Upload DMG ────────────────────────────────────────────────────────────────
echo "→ Uploading $DMG_NAME..."
UPLOAD_RESPONSE=$(curl -s -X POST \
    "${GITEA_URL}/api/v1/repos/${GITEA_USER}/${GITEA_REPO}/releases/${RELEASE_ID}/assets?name=${DMG_NAME}" \
    -H "Authorization: token ${GITEA_TOKEN}" \
    -H "Content-Type: application/octet-stream" \
    --data-binary "@${DMG_PATH}")

DOWNLOAD_URL=$(echo "$UPLOAD_RESPONSE" | python3 -c "import sys,json; print(json.load(sys.stdin).get('browser_download_url',''))" 2>/dev/null)
if [ -z "$DOWNLOAD_URL" ]; then
    echo "WARNING: Upload response unexpected:"
    echo "$UPLOAD_RESPONSE"
else
    echo ""
    echo "✓ Released: $DOWNLOAD_URL"
    echo "  Release page: ${GITEA_URL}/${GITEA_USER}/${GITEA_REPO}/releases/tag/${TAG}"
fi