/*!
 * SAPUI5
 * Copyright (c) 2025 SAP SE or an SAP affiliate company. All rights reserved.
 */
import { Sina } from "../../sina/Sina";
import { DataSource } from "../../sina/DataSource";
import { DataSourceType } from "../../sina/DataSourceType";
import { SuggestionQuery } from "../../sina/SuggestionQuery";
import { getMatchedStringValues, readFile } from "./Util";

export interface DataSourceResponse {
    results: DataSource[]; // total results
    totalCount: number;
}

export class DataSourceService {
    constructor(
        readonly sina: Sina,
        readonly dataSourceIds: string[]
    ) {}

    async loadDataSources(): Promise<void> {
        if (
            this.sina.dataSources.some((dataSource) => dataSource.type === DataSourceType.BusinessObject) ||
            this.dataSourceIds.length === 0
        ) {
            return;
        }

        try {
            for (const dataSourceId of this.dataSourceIds) {
                const content = await readFile(
                    `/resources/sap/esh/search/ui/sinaNexTS/providers/sample2/data/${dataSourceId}.json`
                );
                this.sina.dataSourceFromJson(JSON.parse(content));
            }
        } catch {
            console.error("Error: unable to load data sources from JSON files");
        }
    }

    getDataSources(): DataSource[] {
        return this.sina.dataSources;
    }

    getDataSource(dataSourceId: string): DataSource {
        return this.sina.dataSources.find((dataSource) => dataSource.id === dataSourceId);
    }

    getResponse(query: SuggestionQuery): DataSourceResponse {
        const matchedDataSources = [];
        for (const dataSource of this.sina.dataSources) {
            if (
                getMatchedStringValues([(dataSource.labelPlural, dataSource.label)], query.filter.searchTerm)
                    .length > 0
            ) {
                matchedDataSources.push(dataSource);
            }
        }
        return { results: matchedDataSources, totalCount: matchedDataSources.length };
    }
}