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package com.alibaba.fastjson2.writer;

import com.alibaba.fastjson2.JSONException;
import com.alibaba.fastjson2.JSONWriter;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

final class FieldWriterCharMethod
        extends FieldWriter {
    FieldWriterCharMethod(
            String fieldName,
            int ordinal,
            long features,
            String format,
            String label,
            Field field,
            Method method,
            Class fieldClass
    ) {
        super(fieldName, ordinal, features, format, label, fieldClass, fieldClass, field, method);
    }

    @Override
    public Object getFieldValue(T object) {
        try {
            return method.invoke(object);
        } catch (IllegalArgumentException | IllegalAccessException | InvocationTargetException e) {
            throw new JSONException("invoke getter method error, " + fieldName, e);
        }
    }

    @Override
    public void writeValue(JSONWriter jsonWriter, T object) {
        Character value = (Character) getFieldValue(object);

        if (value == null) {
            jsonWriter.writeNull();
            return;
        }

        jsonWriter.writeChar(value);
    }

    @Override
    public boolean write(JSONWriter jsonWriter, T object) {
        Character value = (Character) getFieldValue(object);

        if (value == null) {
            return false;
        }

        writeFieldName(jsonWriter);
        jsonWriter.writeChar(value);
        return true;
    }
}