#!/bin/sh -e

# parse the current git commit hash
COMMIT=`git rev-parse --short=8 HEAD`

# check if the current commit has a matching tag (filter for v* tags, excluding api/)
TAG=$(git describe --exact-match --abbrev=0 --tags --match="v[0-9]*" 2> /dev/null || true)

# use the matching tag as the version, if available
if [ -z "$TAG" ]; then
    # No exact tag on current commit, find the last version tag and bump minor version
    # Get all tags matching v[0-9]*, sort them, and take the last one
    LAST_TAG=$(git tag --list "v[0-9]*" --sort=-version:refname | head -1)

    if [ -z "$LAST_TAG" ]; then
        # No tags found, use v0.1.0 as fallback
        BASE_VERSION="v0.1.0"
    else
        # Parse the last tag and bump minor version
        # Remove 'v' prefix
        TAG_WITHOUT_V="${LAST_TAG#v}"

        # Split version into parts (major.minor.patch)
        MAJOR=$(echo "$TAG_WITHOUT_V" | cut -d. -f1)
        MINOR=$(echo "$TAG_WITHOUT_V" | cut -d. -f2)
        PATCH=$(echo "$TAG_WITHOUT_V" | cut -d. -f3)

        # Bump minor version
        MINOR=$((MINOR + 1))

        # Construct base version with bumped minor
        BASE_VERSION="v${MAJOR}.${MINOR}.0"
    fi

    # Get commit timestamp in YYYYMMDDhhmmss format
    TIMESTAMP=$(git log -1 --format=%ci HEAD | sed 's/[-: ]//g' | cut -c1-14)

    # Construct pseudo-version
    VERSION="${BASE_VERSION}-${TIMESTAMP}-${COMMIT}"
else
    VERSION=$TAG
fi

# check for changed files (not untracked files)
if [ -n "$(git diff --shortstat 2> /dev/null | tail -n1)" ]; then
    VERSION="${VERSION}-dirty"
fi

echo $VERSION