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

cd "$(dirname "$0")"

manifest=${1:?manifest required}
filter_group=${2:?filter group required}
output_mode=${3:?output mode required}
allowed_groups=${4:?allowed groups required}
duplicate_groups=${5:?duplicate groups required}
missing_source_message=${6:?missing source message required}
linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}

contains_group() {
    local groups=$1
    local group=$2
    [[ ",$groups," == *",$group,"* ]]
}

checks_duplicate_group() {
    local groups=$1
    local group=$2
    [[ "$groups" == "all" ]] || contains_group "$groups" "$group"
}

LINUXCNC_ROOT="$linuxcnc_root" ./check-linuxcnc-inputs-cached.sh "$manifest"
linuxcnc_root=$(cd "$linuxcnc_root" && pwd)

if [[ "$filter_group" != "all" ]] && ! contains_group "$allowed_groups" "$filter_group"; then
    echo "unknown manifest source filter: $filter_group" >&2
    exit 1
fi

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
            ;;
    esac

    if ! contains_group "$allowed_groups" "$group"; then
        echo "unknown manifest group: $group" >&2
        exit 1
    fi

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

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