package eu.eudat.logic.proxy.fetching;

import com.jayway.jsonpath.DocumentContext;
import eu.eudat.logic.proxy.config.DataUrlConfiguration;
import eu.eudat.logic.proxy.config.ExternalUrlCriteria;
import eu.eudat.logic.proxy.fetching.entities.Results;
import net.minidev.json.JSONArray;

import java.util.*;
import java.util.stream.Collectors;

public class RemoteFetcherUtils {

    public static Results getFromJsonWithSource(DocumentContext jsonContext, DataUrlConfiguration jsonDataPath) {
        return new Results(jsonContext.read(jsonDataPath.getPath()
                + "[" + jsonDataPath.getFieldsUrlConfiguration().getName() + "," + jsonDataPath.getFieldsUrlConfiguration().getDescription()
                + "," + jsonDataPath.getFieldsUrlConfiguration().getUri() + "," + jsonDataPath.getFieldsUrlConfiguration().getId()
                + "," + jsonDataPath.getFieldsUrlConfiguration().getSource() + "]"),
                new HashMap<>(1, 1));
    }

    public static Results getFromJsonWithParsedData(DocumentContext jsonContext, DataUrlConfiguration jsonDataPath) {
        Results results = new Results(jsonContext.read(jsonDataPath.getPath()
                + "[" + jsonDataPath.getFieldsUrlConfiguration().getName()
                + "," + jsonDataPath.getFieldsUrlConfiguration().getId() + "]"),
                new HashMap<>(1, 1));
        List<Map<String, String>> fixedResults = results.getResults().stream().map(item -> {
            for (int i = 0; i < 2; i++) {
                String id;
                if (i == 0) {
                    id = jsonDataPath.getFieldsUrlConfiguration().getId().replace("'", "");
                } else {
                    id = jsonDataPath.getFieldsUrlConfiguration().getName().replace("'", "");
                }
                if (!(item.get(id) instanceof String)) {
                    Object obj = item.get(id);
                    if (obj instanceof JSONArray) {
                        JSONArray jarr = (JSONArray) obj;
                        if (jarr.get(0) instanceof String) {
                            item.put(id, jarr.get(0).toString());
                        } else {
                            for (int j = 0; j < jarr.size(); j++) {
                                mapToMap(id, (Map<String, String>)jarr.get(j), item, i == 1);
                            }
                        }
                    } else {
                        if (obj instanceof Map) {
                            mapToMap(id, (Map<String, String>) obj, item, i == 1);
                        } else if (obj != null){
                            item.put(id, obj.toString());
                        }
                    }
                }
            }
            return item;
        }).collect(Collectors.toList());

        return new Results(fixedResults, new HashMap<>(1, 1));
    }

    public static Results getFromJsonWithRecursiveFetching(DocumentContext jsonContext, DataUrlConfiguration jsonDataPath, RemoteFetcher remoteFetcher, String requestBody, String requestType) {
        Results results = new Results(jsonContext.read(jsonDataPath.getPath()
                + "[" + jsonDataPath.getFieldsUrlConfiguration().getPath()
                + "," + jsonDataPath.getFieldsUrlConfiguration().getHost() + "]"),
                new HashMap<>(1, 1));

        List<Map<String, String>> multiResults = results.getResults().stream().map(result -> {
            ExternalUrlCriteria externalUrlCriteria = new ExternalUrlCriteria();
            externalUrlCriteria.setPath(result.get("path"));
            externalUrlCriteria.setHost(result.get("host"));
            String replacedPath = remoteFetcher.replaceCriteriaOnUrl(jsonDataPath.getUrlConfiguration().getUrl(), externalUrlCriteria, jsonDataPath.getUrlConfiguration().getFirstpage());
            return remoteFetcher.getResultsFromUrl(replacedPath, jsonDataPath.getUrlConfiguration().getData(), jsonDataPath.getUrlConfiguration().getData().getPath(), jsonDataPath.getUrlConfiguration().getContentType(), requestBody, requestType);
        }).filter(Objects::nonNull).map(results1 -> results1.getResults().get(0)).collect(Collectors.toList());
        return new Results(multiResults, new HashMap<>(1, 1));
    }

    public static Results getFromJsonWithType(DocumentContext jsonContext, DataUrlConfiguration jsonDataPath) {
        List<Map<String, Object>> tempRes = jsonContext.read(jsonDataPath.getPath()
                + "[" + jsonDataPath.getFieldsUrlConfiguration().getId() + "," + jsonDataPath.getFieldsUrlConfiguration().getName()
                + "," + jsonDataPath.getFieldsUrlConfiguration().getTypes() + "," + jsonDataPath.getFieldsUrlConfiguration().getUri() + "]");
        List<Map<String, String>> finalRes = new ArrayList<>();
        tempRes.forEach(map -> {
            Map<String, String> resMap = new HashMap<>();
            map.forEach((key, value) -> {
                if (key.equals(jsonDataPath.getFieldsUrlConfiguration().getTypes().substring(1, jsonDataPath.getFieldsUrlConfiguration().getTypes().length() - 1))) {
                    resMap.put("tags", ((JSONArray) value).toJSONString());
                } else if (key.equals(jsonDataPath.getFieldsUrlConfiguration().getUri().substring(1, jsonDataPath.getFieldsUrlConfiguration().getTypes().length() - 1))) {
                    resMap.put(key, ((JSONArray) value).toJSONString());
                } else {
                    resMap.put(key, (String) value);
                }
            });

            finalRes.add(resMap);
        });

        return new Results(finalRes,
                new HashMap<>(1, 1));
    }

    public static Results getFromJsonWithFirstAndLastName(DocumentContext jsonContext, DataUrlConfiguration jsonDataPath) {
        Results results = new Results(jsonContext.read(jsonDataPath.getPath()
                + "[" + jsonDataPath.getFieldsUrlConfiguration().getId() + "," + jsonDataPath.getFieldsUrlConfiguration().getFirstName()
                + "," + jsonDataPath.getFieldsUrlConfiguration().getLastName() + "]"),
                new HashMap<>(1, 1));
        results.getResults().stream().forEach(entry -> {
            String name = entry.get(jsonDataPath.getFieldsUrlConfiguration().getFirstName().replace("'", "")) + " " + entry.get(jsonDataPath.getFieldsUrlConfiguration().getLastName().replace("'", ""));
            entry.put("name", name);
            entry.remove(jsonDataPath.getFieldsUrlConfiguration().getFirstName().replace("'", ""));
            entry.remove(jsonDataPath.getFieldsUrlConfiguration().getLastName().replace("'", ""));
        });
        return results;
    }

    private static void mapToMap(String key, Map<String, String> source, Map<String, String> destination, boolean isTitle) {
        if (source != null) {
            String content = source.get("content");
            /*if (isTitle) {
                String classId = source.get("classid");
                if (classId.equals("main title")) {
                    destination.put(key, content);
                }
            } else {*/
            destination.put(key, content);
//            }
        }
    }
}