#!/usr/bin/env bash
set -euo pipefail

VERSION_FILE="VERSION"

if [ ! -f "$VERSION_FILE" ]; then
    echo "Error: $VERSION_FILE not found" >&2
    exit 1
fi

current=$(cat "$VERSION_FILE")
echo "Current version: $current"

IFS='.' read -r major minor patch <<< "$current"

if [ "${1:-}" = "--increment" ]; then
    patch=$((patch + 1))
    new_version="${major}.${minor}.${patch}"
    echo "Auto-incrementing to: $new_version"
else
    echo "Increment version? [y/N]"
    read -r answer
    if [[ "$answer" =~ ^[Yy] ]]; then
        patch=$((patch + 1))
        new_version="${major}.${minor}.${patch}"
        echo "New version: $new_version"
    else
        new_version="$current"
        echo "Keeping version: $new_version"
    fi
fi

echo "$new_version" > "$VERSION_FILE"

echo "Building arrman v${new_version}..."
go build -ldflags "-X main.Version=${new_version}" -o arrman .

echo "Build successful: ./arrman v${new_version}"

# --- Git commit & push ---
echo ""
echo "Committing changes..."
git add -A
if git diff --cached --quiet; then
    echo "No changes to commit, skipping."
else
    git commit -m "Release v${new_version}"
    echo "Committed."
fi

echo "Pushing to origin..."
git push origin main

# --- Git tag & Gitea release ---
tag="v${new_version}"

if git tag -l "${tag}" | grep -q "^${tag}$"; then
    echo "Warning: Tag ${tag} already exists, skipping tag, push, and release creation."
else
    echo "Creating tag ${tag}..."
    git tag -a "${tag}" -m "Release ${tag}"
    git push origin "${tag}"

    echo ""
    echo "Creating Gitea release..."

    # Generate release notes from git log since last tag
    prev_tag=$(git tag --sort=-v:refname | grep -v "^${tag}$" | head -1 || true)
    if [ -n "$prev_tag" ]; then
        release_notes=$(git log --pretty=format:"- %s" "${prev_tag}..${tag}")
    else
        release_notes=$(git log --pretty=format:"- %s" "${tag}")
    fi

    tea release create \
        --tag "${tag}" \
        --title "${tag}" \
        --note "$release_notes" \
        --asset ./arrman

    echo ""
    echo "Done! Published arrman ${tag}"
fi