#!/bin/bash
set -euo pipefail

# Post-commit hook for bumpver to create a Forgejo release
# This script creates a release on Forgejo using the changelog generated in the pre-commit hook

# Configuration
FORGEJO_URL="https://servala.app.codey.ch"
REPO_OWNER="servala"
REPO_NAME="servala-portal"

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# Check for required environment variable
if [ -z "${FORGEJO_TOKEN:-}" ]; then
    echo -e "${RED}Error: FORGEJO_TOKEN environment variable is not set${NC}"
    echo "Please set FORGEJO_TOKEN to your Forgejo API token"
    exit 1
fi

# Get the current version from pyproject.toml
CURRENT_VERSION=$(grep -E 'current_version = ".*"' pyproject.toml | head -1 | sed -E 's/current_version = "(.*)"/\1/')
echo -e "${GREEN}Creating release for version: ${CURRENT_VERSION}${NC}"

# Get the latest tag (should match CURRENT_VERSION)
LATEST_TAG=$(git tag -l --sort=-v:refname | head -1)
if [ "$LATEST_TAG" != "$CURRENT_VERSION" ]; then
    echo -e "${YELLOW}Warning: Latest tag (${LATEST_TAG}) doesn't match current version (${CURRENT_VERSION})${NC}"
    echo -e "${YELLOW}Using current version: ${CURRENT_VERSION}${NC}"
fi

# Try to read the changelog generated by the pre-commit hook
CHANGELOG_DIR=".git/changelog"
CHANGELOG_FILE="${CHANGELOG_DIR}/${CURRENT_VERSION}.txt"

if [ -f "$CHANGELOG_FILE" ]; then
    CHANGELOG_CONTENT=$(cat "$CHANGELOG_FILE")
    echo -e "${GREEN}Found changelog content from pre-commit hook${NC}"
else
    echo -e "${YELLOW}Warning: Changelog file not found at ${CHANGELOG_FILE}${NC}"
    echo -e "${YELLOW}Generating changelog from tag information${NC}"

    # Fallback: use git log to get commits since previous tag
    PREVIOUS_TAG=$(git tag -l --sort=-v:refname | head -2 | tail -1)
    if [ -n "$PREVIOUS_TAG" ]; then
        CHANGELOG_CONTENT=$(git log --pretty=format:"* %s" "${PREVIOUS_TAG}..${LATEST_TAG}")
    else
        CHANGELOG_CONTENT="* Initial release"
    fi
fi

# Convert AsciiDoc to Markdown
# 1. Convert === headers to ### (third-level headers)
# 2. Convert link:url[text] to [text](url)
CHANGELOG_MARKDOWN=$(echo "$CHANGELOG_CONTENT" | sed -E 's/^=== /### /g' | sed -E 's/link:([^[]+)\[([^]]+)\]/[\2](\1)/g')

# Create release body in Markdown format
RELEASE_BODY="## Release ${CURRENT_VERSION}

${CHANGELOG_MARKDOWN}
"

# Check if release already exists
API_URL="${FORGEJO_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/releases/tags/${CURRENT_VERSION}"
EXISTING_RELEASE=$(curl -s -H "Authorization: token ${FORGEJO_TOKEN}" "${API_URL}")

# Check if we got a release back (not an error)
if echo "$EXISTING_RELEASE" | jq -e '.id' > /dev/null 2>&1; then
    echo -e "${YELLOW}Release ${CURRENT_VERSION} already exists${NC}"
    RELEASE_ID=$(echo "$EXISTING_RELEASE" | jq -r '.id')
    echo -e "${GREEN}Updating existing release (ID: ${RELEASE_ID})${NC}"

    # Update the existing release
    UPDATE_URL="${FORGEJO_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/releases/${RELEASE_ID}"

    RESPONSE=$(curl -s -X PATCH \
        -H "Authorization: token ${FORGEJO_TOKEN}" \
        -H "Content-Type: application/json" \
        -d "$(jq -n \
            --arg tag "${CURRENT_VERSION}" \
            --arg name "Release ${CURRENT_VERSION}" \
            --arg body "${RELEASE_BODY}" \
            '{
                tag_name: $tag,
                name: $name,
                body: $body
            }')" \
        "${UPDATE_URL}")

    if echo "$RESPONSE" | jq -e '.id' > /dev/null 2>&1; then
        RELEASE_URL=$(echo "$RESPONSE" | jq -r '.html_url')
        echo -e "${GREEN}Release updated successfully!${NC}"
        echo -e "${GREEN}Release URL: ${RELEASE_URL}${NC}"
    else
        echo -e "${RED}Error updating release${NC}"
        echo "$RESPONSE" | jq .
        exit 1
    fi
else
    echo -e "${GREEN}Creating new release${NC}"

    # Create new release
    CREATE_URL="${FORGEJO_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/releases"

    RESPONSE=$(curl -s -X POST \
        -H "Authorization: token ${FORGEJO_TOKEN}" \
        -H "Content-Type: application/json" \
        -d "$(jq -n \
            --arg tag "${CURRENT_VERSION}" \
            --arg name "Release ${CURRENT_VERSION}" \
            --arg body "${RELEASE_BODY}" \
            '{
                tag_name: $tag,
                name: $name,
                body: $body,
                draft: false,
                prerelease: false
            }')" \
        "${CREATE_URL}")

    if echo "$RESPONSE" | jq -e '.id' > /dev/null 2>&1; then
        RELEASE_URL=$(echo "$RESPONSE" | jq -r '.html_url')
        echo -e "${GREEN}Release created successfully!${NC}"
        echo -e "${GREEN}Release URL: ${RELEASE_URL}${NC}"
    else
        echo -e "${RED}Error creating release${NC}"
        echo "$RESPONSE" | jq .
        exit 1
    fi
fi

# Clean up the changelog file
if [ -f "$CHANGELOG_FILE" ]; then
    rm -f "$CHANGELOG_FILE"
fi

exit 0