#!/bin/bash

backupVerifySnapshot()
{
    local idx="$1"
    local snapshot_id="$2"
    local app_name="$3"

    if [[ -z "$snapshot_id" ]]; then
        isNotice "No snapshot id provided — verification skipped"
        return 0
    fi

    local scratch
    scratch=$(mktemp -d -t libreportal-verify-XXXXXX)
    sudo chown "$docker_install_user":"$docker_install_user" "$scratch"

    isNotice "Verifying ${snapshot_id:0:8} via scratch restore at $scratch"

    if ! engineRestoreSnapshot "$idx" "$snapshot_id" "$scratch" "$containers_dir$app_name"; then
        isError "Verify restore FAILED for $app_name on $(resticLocationName "$idx")"
        sudo rm -rf "$scratch"
        return 1
    fi

    local source_count restored_count
    source_count=$(sudo find "$containers_dir$app_name" -type f 2>/dev/null | wc -l)
    restored_count=$(sudo find "$scratch$containers_dir$app_name" -type f 2>/dev/null | wc -l)

    sudo rm -rf "$scratch"

    if [[ "$source_count" -ne "$restored_count" ]]; then
        isError "Verify file-count mismatch for $app_name (source=$source_count restored=$restored_count)"
        return 1
    fi

    isSuccessful "Snapshot ${snapshot_id:0:8} verified — file count matches ($source_count)"
}