package design.persistence;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.util.DefaultIndenter;
import com.fasterxml.jackson.core.util.DefaultPrettyPrinter;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import design.model.Course;
import design.model.Golfer;
import design.model.League;

import java.io.IOException;
import java.time.LocalDateTime;

public class Serializers {
    public static class CustomPrettyPrinter extends DefaultPrettyPrinter {
        public CustomPrettyPrinter() {
            super._arrayIndenter = new DefaultIndenter();
            super._objectFieldValueSeparatorWithSpaces = _separators.getObjectFieldValueSeparator() + " ";
            super._arrayEmptySeparator = "";
        }

        @Override
        public CustomPrettyPrinter createInstance() {
            return new CustomPrettyPrinter();
        }
    }

    public static class CourseIdSerializer extends JsonSerializer<Course> {
        @Override
        public void serialize(Course course, JsonGenerator gen, SerializerProvider serializers) throws IOException {
            gen.writeNumber(course.getId());
        }
    }

    public static class CourseIdDeserializer extends JsonDeserializer<Course> {
        @Override
        public Course deserialize(JsonParser p, DeserializationContext context) throws IOException {
            MasterDatabase masterDB = MasterDatabase.instance();
            int id = p.getValueAsInt();
            return masterDB.getCourse(id);
        }
    }

    public static class LeagueIDSerializer extends JsonSerializer<League> {
        @Override
        public void serialize(League value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
            gen.writeNumber(value.getId());
        }
    }

    public static class LeagueIDDeserializer extends JsonDeserializer<League> {
        @Override
        public League deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
            LeagueDatabase leagueDB = LeagueDatabase.instance();
            int id = p.getValueAsInt();
            return leagueDB.getLeague(id);
        }
    }

    public static class GolferUsernameSerializer extends JsonSerializer<Golfer> {
        @Override
        public void serialize(Golfer course, JsonGenerator gen, SerializerProvider serializers) throws IOException {
            gen.writeString(course.getUsername());
        }
    }

    public static class GolferUsernameDeserializer extends JsonDeserializer<Golfer> {

        @Override
        public Golfer deserialize(JsonParser p, DeserializationContext context) throws IOException {
            PersonalDatabase personalDB = PersonalDatabase.instance();
            String username = p.getValueAsString();
            return personalDB.getGolfer(username);
        }
    }

    public static class DateTimeStringSerializer extends JsonSerializer<LocalDateTime> {
        @Override
        public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
            gen.writeString(value.toString());
        }
    }
}