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

cd "$(dirname "$0")"

# LinuxCNC source basis: manifest listers expose LinuxCNC-root relative source
# entries from RS274, kinematics, remap, config, tooldata, and metadata
# manifests after check-linuxcnc-inputs.sh validates their source coverage.
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 [[ "$filter_group" != "all" && ! "$filter_group" =~ ^[A-Za-z0-9_-]+$ ]]; then
    echo "manifest source filter must be a manifest group name: $filter_group" >&2
    exit 1
fi

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=()
manifest_line_number=0
while IFS= read -r manifest_line || [[ -n "$manifest_line" ]]; do
    manifest_line_number=$((manifest_line_number + 1))
    case "$manifest_line" in
        ""|\#*)
            continue
            ;;
    esac

    IFS=: read -r group path note extra <<<"$manifest_line"
    if [[ -z "$group" || -z "$path" || -z "$note" || -n "${extra:-}" ]]; then
        echo "bad manifest line $manifest_line_number: $manifest_line" >&2
        exit 1
    fi
    if ! contains_group "$allowed_groups" "$group"; then
        echo "unknown manifest group: $group" >&2
        exit 1
    fi
    if [[ "$path" = /* || "$path" == .. || "$path" == ../* || "$path" == */.. || "$path" == */../* ]]; then
        echo "manifest source must be LinuxCNC-root relative: $path" >&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"