package io.trygvis.persistence;

import io.trygvis.container.compiler.model.TypeRef;

import static io.trygvis.container.compiler.Utils.toGetterName;
import static io.trygvis.container.compiler.model.Parameters.ParameterRef;
import static io.trygvis.persistence.FieldMirror.AccessorType.FIELD;

/**
 * TODO: a single field might have to be mapped to multiple sql columns.
 */
public class FieldMirror {
    public final FieldType fieldType;
    public final AccessorType accessorType;
    public final TypeRef type;
    public final String javaName;
    public final String sqlName;
    public final boolean id;
    public final boolean notNull;
    public final boolean unique;

    public enum FieldType {
        PRIMITIVE,
        REFERENCE,
    }

    public enum AccessorType {
        FIELD,
        METHOD,
    }

    public FieldMirror(FieldType fieldType, AccessorType accessorType, TypeRef type, String javaName, String sqlName,
                       boolean id, boolean notNull, boolean unique) {
        this.fieldType = fieldType;
        this.accessorType = accessorType;
        this.type = type;
        this.javaName = javaName;
        this.sqlName = sqlName;
        this.id = id;
        this.notNull = notNull;
        this.unique = unique;
    }

    public String fieldAccessor(ParameterRef o) {
        return fieldAccessor(o.name);
    }

    public String referenceAccessor(ParameterRef o, FieldMirror f) {
        return f.fieldAccessor(o.name + "." + javaName);
    }

    private String fieldAccessor(String o) {
        if (accessorType == FIELD) {
            return o + "." + javaName;
        }
        return o + "." + toGetterName(javaName) + "()";
    }

    @Override
    public String toString() {
        return "FieldMirror{" +
                "fieldType=" + fieldType +
                ", accessorType=" + accessorType +
                ", type=" + type +
                ", javaName='" + javaName + '\'' +
                ", sqlName='" + sqlName + '\'' +
                ", id=" + id +
                ", notNull=" + notNull +
                ", unique=" + unique +
                '}';
    }
}