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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 filename: []const u8 = ".roon.json";

connection: ?Connection = null,

const Connection = struct {
    server_id: []const u8,
    token: []const u8,
};

pub fn clone(self: *const @This(), allocator: std.mem.Allocator) @This() {
    return .{
        .connection = if (self.connection) |conn| conn: {
            const server_id = try allocator.dupe(u8, conn.server_id);
            errdefer allocator.free(server_id);

            const token = allocator.dupe(u8, conn.token);
            errdefer allocator.free(token);

            break :conn .{
                .server_id = server_id,
                .token = token,
            };
        } catch null,
    };
}

pub fn write(self: *const @This()) !void {
    var file = try std.fs.cwd().createFile(filename, .{});
    defer file.close();

    try std.json.stringify(self, .{ .whitespace = .indent_tab }, file.writer());
}

pub fn read(allocator: std.mem.Allocator) !std.json.Parsed(@This()) {
    const contents = try std.fs.cwd().readFileAlloc(allocator, filename, std.math.maxInt(usize));
    defer allocator.free(contents);

    return try std.json.parseFromSlice(@This(), allocator, contents, .{
        .allocate = .alloc_always,
    });
}