"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ReflectionJsonWriter = void 0;
const base64_1 = require("./base64");
const pb_long_1 = require("./pb-long");
const reflection_info_1 = require("./reflection-info");
const assert_1 = require("./assert");
/**
 * Writes proto3 messages in canonical JSON format using reflection
 * information.
 *
 * https://developers.google.com/protocol-buffers/docs/proto3#json
 */
class ReflectionJsonWriter {
    constructor(info) {
        var _a;
        this.fields = (_a = info.fields) !== null && _a !== void 0 ? _a : [];
    }
    /**
     * Converts the message to a JSON object, based on the field descriptors.
     */
    write(message, options) {
        const json = {}, source = message;
        for (const field of this.fields) {
            // field is not part of a oneof, simply write as is
            if (!field.oneof) {
                let jsonValue = this.field(field, source[field.localName], options);
                if (jsonValue !== undefined)
                    json[options.useProtoFieldName ? field.name : field.jsonName] = jsonValue;
                continue;
            }
            // field is part of a oneof
            const group = source[field.oneof];
            if (group.oneofKind !== field.localName)
                continue; // not selected, skip
            const opt = field.kind == 'scalar' || field.kind == 'enum'
                ? Object.assign(Object.assign({}, options), { emitDefaultValues: true }) : options;
            let jsonValue = this.field(field, group[field.localName], opt);
            assert_1.assert(jsonValue !== undefined);
            json[options.useProtoFieldName ? field.name : field.jsonName] = jsonValue;
        }
        return json;
    }
    field(field, value, options) {
        let jsonValue = undefined;
        if (field.kind == 'map') {
            assert_1.assert(typeof value == "object" && value !== null);
            const jsonObj = {};
            switch (field.V.kind) {
                case "scalar":
                    for (const [entryKey, entryValue] of Object.entries(value)) {
                        const val = this.scalar(field.V.T, entryValue, field.name, false, true);
                        assert_1.assert(val !== undefined);
                        jsonObj[entryKey.toString()] = val; // JSON standard allows only (double quoted) string as property key
                    }
                    break;
                case "message":
                    const messageType = field.V.T();
                    for (const [entryKey, entryValue] of Object.entries(value)) {
                        const val = this.message(messageType, entryValue, field.name, options);
                        assert_1.assert(val !== undefined);
                        jsonObj[entryKey.toString()] = val; // JSON standard allows only (double quoted) string as property key
                    }
                    break;
                case "enum":
                    const enumInfo = field.V.T();
                    for (const [entryKey, entryValue] of Object.entries(value)) {
                        assert_1.assert(entryValue === undefined || typeof entryValue == 'number');
                        const val = this.enum(enumInfo, entryValue, field.name, false, true, options.enumAsInteger);
                        assert_1.assert(val !== undefined);
                        jsonObj[entryKey.toString()] = val; // JSON standard allows only (double quoted) string as property key
                    }
                    break;
            }
            if (options.emitDefaultValues || Object.keys(jsonObj).length > 0)
                jsonValue = jsonObj;
        }
        else if (field.repeat) {
            assert_1.assert(Array.isArray(value));
            const jsonArr = [];
            switch (field.kind) {
                case "scalar":
                    for (let i = 0; i < value.length; i++) {
                        const val = this.scalar(field.T, value[i], field.name, field.opt, true);
                        assert_1.assert(val !== undefined);
                        jsonArr.push(val);
                    }
                    break;
                case "enum":
                    const enumInfo = field.T();
                    for (let i = 0; i < value.length; i++) {
                        assert_1.assert(value[i] === undefined || typeof value[i] == 'number');
                        const val = this.enum(enumInfo, value[i], field.name, field.opt, true, options.enumAsInteger);
                        assert_1.assert(val !== undefined);
                        jsonArr.push(val);
                    }
                    break;
                case "message":
                    const messageType = field.T();
                    for (let i = 0; i < value.length; i++) {
                        const val = this.message(messageType, value[i], field.name, options);
                        assert_1.assert(val !== undefined);
                        jsonArr.push(val);
                    }
                    break;
            }
            // add converted array to json output
            if (options.emitDefaultValues || jsonArr.length > 0 || options.emitDefaultValues)
                jsonValue = jsonArr;
        }
        else {
            switch (field.kind) {
                case "scalar":
                    jsonValue = this.scalar(field.T, value, field.name, field.opt, options.emitDefaultValues);
                    break;
                case "enum":
                    jsonValue = this.enum(field.T(), value, field.name, field.opt, options.emitDefaultValues, options.enumAsInteger);
                    break;
                case "message":
                    jsonValue = this.message(field.T(), value, field.name, options);
                    break;
            }
        }
        return jsonValue;
    }
    /**
     * Returns `null` as the default for google.protobuf.NullValue.
     */
    enum(type, value, fieldName, optional, emitDefaultValues, enumAsInteger) {
        if (type[0] == 'google.protobuf.NullValue')
            return !emitDefaultValues && !optional ? undefined : null;
        if (value === undefined) {
            assert_1.assert(optional);
            return undefined;
        }
        if (value === 0 && !emitDefaultValues && !optional)
            // we require 0 to be default value for all enums
            return undefined;
        assert_1.assert(typeof value == 'number');
        assert_1.assert(Number.isInteger(value));
        if (enumAsInteger || !type[1].hasOwnProperty(value))
            // if we don't now the enum value, just return the number
            return value;
        if (type[2])
            // restore the dropped prefix
            return type[2] + type[1][value];
        return type[1][value];
    }
    message(type, value, fieldName, options) {
        if (value === undefined)
            return options.emitDefaultValues ? null : undefined;
        return type.internalJsonWrite(value, options);
    }
    scalar(type, value, fieldName, optional, emitDefaultValues) {
        if (value === undefined) {
            assert_1.assert(optional);
            return undefined;
        }
        const ed = emitDefaultValues || optional;
        // noinspection FallThroughInSwitchStatementJS
        switch (type) {
            // int32, fixed32, uint32: JSON value will be a decimal number. Either numbers or strings are accepted.
            case reflection_info_1.ScalarType.INT32:
            case reflection_info_1.ScalarType.SFIXED32:
            case reflection_info_1.ScalarType.SINT32:
                if (value === 0)
                    return ed ? 0 : undefined;
                assert_1.assertInt32(value);
                return value;
            case reflection_info_1.ScalarType.FIXED32:
            case reflection_info_1.ScalarType.UINT32:
                if (value === 0)
                    return ed ? 0 : undefined;
                assert_1.assertUInt32(value);
                return value;
            // float, double: JSON value will be a number or one of the special string values "NaN", "Infinity", and "-Infinity".
            // Either numbers or strings are accepted. Exponent notation is also accepted.
            case reflection_info_1.ScalarType.FLOAT:
                assert_1.assertFloat32(value);
            case reflection_info_1.ScalarType.DOUBLE:
                if (value === 0)
                    return ed ? 0 : undefined;
                assert_1.assert(typeof value == 'number');
                if (Number.isNaN(value))
                    return 'NaN';
                if (value === Number.POSITIVE_INFINITY)
                    return 'Infinity';
                if (value === Number.NEGATIVE_INFINITY)
                    return '-Infinity';
                return value;
            // string:
            case reflection_info_1.ScalarType.STRING:
                if (value === "")
                    return ed ? '' : undefined;
                assert_1.assert(typeof value == 'string');
                return value;
            // bool:
            case reflection_info_1.ScalarType.BOOL:
                if (value === false)
                    return ed ? false : undefined;
                assert_1.assert(typeof value == 'boolean');
                return value;
            // JSON value will be a decimal string. Either numbers or strings are accepted.
            case reflection_info_1.ScalarType.UINT64:
            case reflection_info_1.ScalarType.FIXED64:
                assert_1.assert(typeof value == 'number' || typeof value == 'string' || typeof value == 'bigint');
                let ulong = pb_long_1.PbULong.from(value);
                if (ulong.isZero() && !ed)
                    return undefined;
                return ulong.toString();
            // JSON value will be a decimal string. Either numbers or strings are accepted.
            case reflection_info_1.ScalarType.INT64:
            case reflection_info_1.ScalarType.SFIXED64:
            case reflection_info_1.ScalarType.SINT64:
                assert_1.assert(typeof value == 'number' || typeof value == 'string' || typeof value == 'bigint');
                let long = pb_long_1.PbLong.from(value);
                if (long.isZero() && !ed)
                    return undefined;
                return long.toString();
            // bytes: JSON value will be the data encoded as a string using standard base64 encoding with paddings.
            // Either standard or URL-safe base64 encoding with/without paddings are accepted.
            case reflection_info_1.ScalarType.BYTES:
                assert_1.assert(value instanceof Uint8Array);
                if (!value.byteLength)
                    return ed ? "" : undefined;
                return base64_1.base64encode(value);
        }
    }
}
exports.ReflectionJsonWriter = ReflectionJsonWriter;