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

cd "$(dirname "$0")"

manifest=${1:-linuxcnc-rs274-wasm-source-files.txt}
filter_group=${2:-core}
output_mode=${3:-relative}
linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}

if [[ ! -f "$manifest" ]]; then
    echo "missing manifest: $manifest" >&2
    exit 1
fi

if [[ ! -d "$linuxcnc_root" ]]; then
    echo "missing LinuxCNC root: $linuxcnc_root" >&2
    exit 1
fi

case "$filter_group" in
    core|blocked|all)
        ;;
    *)
        echo "unknown manifest source filter: $filter_group" >&2
        exit 1
        ;;
esac

case "$output_mode" in
    relative|full)
        ;;
    *)
        echo "unknown manifest source output mode: $output_mode" >&2
        exit 1
        ;;
esac

seen_sources=()
while IFS=: read -r group path note; do
    case "$group" in
        ""|\#*)
            continue
            ;;
        core|blocked)
            ;;
        *)
            echo "unknown manifest group: $group" >&2
            exit 1
            ;;
    esac

    if [[ ! -f "$linuxcnc_root/$path" ]]; then
        echo "missing manifest source: $path" >&2
        exit 1
    fi
    if printf '%s\n' "${seen_sources[@]}" | grep -Fx -- "$path" >/dev/null; then
        echo "duplicate manifest source: $path" >&2
        exit 1
    fi
    seen_sources+=("$path")

    if [[ "$filter_group" == "all" || "$filter_group" == "$group" ]]; then
        if [[ "$output_mode" == "full" ]]; then
            printf '%s\n' "$linuxcnc_root/$path"
        else
            printf '%s\n' "$path"
        fi
    fi
done < "$manifest"