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package cn.keayuan.util;

import org.json.JSONArray;
import org.json.JSONException;

import cn.keayuan.util.function.Consumer;

/**
 * Created by keayuan on 2021/9/26.
 *
 * @author keayuan
 */
public class OptionalJSONArray {
    private static final String TAG = "OptionalJSONArray";
    private static final OptionalJSONArray EMPTY = new OptionalJSONArray(null);
    private final JSONArray value;

    private OptionalJSONArray(JSONArray arr) {
        value = arr;
    }

    public static OptionalJSONArray of(JSONArray arr) {
        return arr == null ? EMPTY : new OptionalJSONArray(arr);
    }

    public static OptionalJSONArray of(String content) {
        return of(parse(content));
    }

    private static JSONArray parse(String content) {
        if (content != null) {
            try {
                return new JSONArray(content);
            } catch (JSONException e) {
                Platform.logger().e(TAG, "parse error", e);
            }
        }
        return null;
    }

    public int optInt(int index) {
        return optInt(index, 0);
    }

    public boolean optBoolean(int index) {
        return optBoolean(index, false);
    }

    public long optLong(int index) {
        return optLong(index, 0);
    }

    public String optString(int index) {
        return optString(index, "");
    }

    public int optInt(int index, int def) {
        if (value == null) return def;
        return value.optInt(index, def);
    }

    public boolean optBoolean(int index, boolean def) {
        if (value == null) return def;
        return value.optBoolean(index, def);
    }

    public long optLong(int index, long def) {
        if (value == null) return def;
        return value.optLong(index, def);
    }

    public double optDouble(int index) {
        return optDouble(index, 0);
    }

    public double optDouble(int index, double def) {
        if (value == null) return def;
        return value.optDouble(index, def);
    }

    public String optString(int index, String def) {
        if (value == null) return def;
        return value.optString(index, def);
    }

    public OptionalJSON optObject(int index) {
        return OptionalJSON.of(value == null ? null : value.optJSONObject(index));
    }

    public OptionalJSONArray optArray(int index) {
        return of(value == null ? null : value.optJSONArray(index));
    }

    @SuppressWarnings("unchecked")
    public  void forEach(Consumer consumer) {
        if (value == null || consumer == null) return;
        int len = value.length();
        for (int i = 0; i < len; i++) {
            consumer.accept((T) value.opt(i));
        }
    }

    public JSONArray get() {
        return value;
    }
}