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// Copyright 2025 Shota FUJI
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0

const std = @import("std");
const moo = @import("moo");

pub fn ServiceServer(comptime Service: type) type {
    return struct {
        pub const service_id: []const u8 = Service.id;

        /// Returns whether the request is handled.
        pub fn handleRequest(
            response_writer: anytype,
            meta: moo.Metadata,
            parser_ctx: moo.HeaderParsingContext,
            message: []const u8,
        ) !bool {
            inline for (@typeInfo(Service).@"struct".decls) |decl| {
                if (@typeInfo(@TypeOf(@field(Service, decl.name))) != .@"fn") {
                    continue;
                }

                if (std.mem.eql(u8, service_id ++ "/" ++ decl.name, meta.service)) {
                    try @field(Service, decl.name)(response_writer, parser_ctx, message);
                    return true;
                }
            }

            return false;
        }
    };
}