fast-down-gui 0.1.45

import {
    Button,
    LineEdit,
    ScrollView,
    StandardButton,
    TextEdit,
    CheckBox,
    ComboBox,
    Switch,
} from "std-widgets.slint";
import { HDivider } from "divider.slint";
import { NoScrollSpinBox } from "my-spin-box.slint";
import { Header1, Header2 } from "headers.slint";
import { Help } from "info.slint";

export struct DownloadConfig {
    save_dir: string,
    file_name: string,
    threads: int,
    proxy: string,
    headers: string,
    min_chunk_size: int,
    write_buffer_size: int,
    write_queue_cap: int,
    retry_gap_ms: int,
    pull_timeout_ms: int,
    accept_invalid_certs: bool,
    accept_invalid_hostnames: bool,
    ips: string,
    max_speculative: int,
    write_method: int,
    retry_times: int,
    chunk_window: int,
    pre_allocate: bool,
    parse_filename: bool,
}
export struct GeneralConfig {
    max_concurrency: int,
    auto_start: bool,
    exit_after_download: bool,
    ask_before_download: bool,
    skip_headers: string,
    run_as_admin: bool,
}

export component Settings inherits VerticalLayout {
    horizontal-stretch: 1;

    in-out property <DownloadConfig> download_config;
    in-out property <GeneralConfig> general_config;

    callback browse_folder();
    callback config_change(DownloadConfig, GeneralConfig);
    callback view_log();

    changed download_config => {
        config_change(download_config, general_config);
    }

    changed general_config => {
        config_change(download_config, general_config);
    }

    HorizontalLayout {
        padding: 8px;
        Header1 {
            text: "设置";
        }
    }

    HDivider { }

    ScrollView {
        VerticalLayout {
            padding: 16px;
            spacing: 8px;
            alignment: LayoutAlignment.start;

            Header2 {
                text: "基础选项";
            }

            Text {
                text: "保存文件夹";
            }

            HorizontalLayout {
                spacing: 8px;

                LineEdit {
                    text <=> download_config.save-dir;
                    placeholder-text: "留空默认为下载目录";
                }

                Button {
                    text: "浏览";
                    clicked => {
                        browse_folder();
                    }
                }
            }

            Text {
                text: "自定义文件名";
            }

            LineEdit {
                text <=> download_config.file-name;
                placeholder-text: "留空默认为自动获取，开启解析文件名和可以使用占位符";
            }

            HorizontalLayout {
                spacing: 8px;
                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "线程越多不意味着越快\n推荐值 32 / 16 / 8";
                        alignment: left;

                        Text {
                            text: "线程数";
                        }
                    }

                    NoScrollSpinBox {
                        minimum: 1;
                        value <=> download_config.threads;
                    }
                }

                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "同时下载的任务数\n推荐值 3";

                        Text {
                            text: "并发任务数";
                        }
                    }

                    NoScrollSpinBox {
                        minimum: 1;
                        value <=> general_config.max-concurrency;
                    }
                }
            }

            Help {
                tooltip: "支持 https、http、socks5 代理";
                alignment: left;

                Text {
                    text: "代理";
                }
            }

            LineEdit {
                text <=> download_config.proxy;
                placeholder-text: "留空为系统代理，输入 null 为不使用代理";
            }

            Text {
                text: "请求头";
            }

            TextEdit {
                text <=> download_config.headers;
                min-height: 150px;
                placeholder-text: "Cookie: value\nUser-Agent: Mozilla/5.0";
            }

            HDivider { }

            Header2 {
                text: "高级选项";
            }

            HorizontalLayout {
                spacing: 8px;
                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "任务窃取时会保证每个分片的大小 ≥ 该值\n推荐值 8 MiB\n分片太小容易造成强烈竞争\n当无法分片的时候会进入冗余竞争模式";

                        Text {
                            text: "最小分片大小 (字节)";
                        }
                    }

                    NoScrollSpinBox {
                        minimum: 1;
                        value <=> download_config.min-chunk-size;
                    }
                }

                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "有利于将随机写入转换为顺序写入，提高写入速度\n推荐值 16 MiB\n该值越大越好";

                        Text {
                            text: "写入缓冲区大小 (字节)";
                        }
                    }

                    NoScrollSpinBox {
                        value <=> download_config.write-buffer-size;
                    }
                }
            }

            HorizontalLayout {
                spacing: 8px;
                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "当分片大小太小后，进入冗余竞争模式。\n该值决定了最多有多少个线程在同一分片上竞争下载，以解决下载卡进度 99% 的问题\n推荐值 3";
                        alignment: left;

                        Text {
                            text: "冗余线程数";
                        }
                    }

                    NoScrollSpinBox {
                        value <=> download_config.max-speculative;
                    }
                }

                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "如果下载线程太快，填满了写入队列，会触发压背，降低下载速度，防止内存占用过大\n推荐值 10240\n如果内存占用过大，应该调小该值";

                        Text {
                            text: "写入队列大小";
                        }
                    }

                    NoScrollSpinBox {
                        minimum: 1;
                        value <=> download_config.write-queue-cap;
                    }
                }
            }

            HorizontalLayout {
                spacing: 8px;
                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "请求失败后的默认重试间隔\n推荐值 500ms\n如果服务器返回中有 Retry-After 头，则遵循服务器返回的设定";
                        alignment: left;

                        Text {
                            text: "重试间隔 (毫秒)";
                        }
                    }

                    NoScrollSpinBox {
                        value <=> download_config.retry-gap-ms;
                    }
                }

                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "推荐值 5000ms\n请求发出后，接收字节中，如果在 pull_timeout 这一段时间内一个字节也没收到，则中断连接，重新请求。\n有利于触发 TCP 重新检测拥塞状态，提高下载速度";

                        Text {
                            text: "拉取超时 (毫秒)";
                        }
                    }

                    NoScrollSpinBox {
                        value <=> download_config.pull-timeout-ms;
                    }
                }
            }

            HorizontalLayout {
                spacing: 8px;
                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "设置获取元数据的重试次数\n推荐值 10\n注意，这不是下载中的重试次数，下载中会无限重试";
                        alignment: left;

                        Text {
                            text: "重试次数";
                        }
                    }

                    NoScrollSpinBox {
                        value <=> download_config.retry-times;
                    }
                }

                VerticalLayout {
                    spacing: 8px;

                    Help {
                        tooltip: "推荐值 8 KiB\n它会过滤掉小于该值的小空洞，并合成一个大范围，以减小 HTTP 请求数量";

                        Text {
                            text: "块平滑窗口";
                        }
                    }

                    NoScrollSpinBox {
                        value <=> download_config.chunk-window;
                    }
                }
            }

            HorizontalLayout {
                spacing: 8px;

                Help {
                    tooltip: "不安全，极度不建议开启";

                    CheckBox {
                        text: "接受无效证书";
                        horizontal-stretch: 1;
                        checked <=> download_config.accept-invalid-certs;
                    }
                }

                Help {
                    tooltip: "不安全，极度不建议开启";

                    CheckBox {
                        text: "接受无效主机";
                        horizontal-stretch: 1;
                        checked <=> download_config.accept-invalid-hostnames;
                    }
                }
            }

            HorizontalLayout {
                spacing: 8px;

                Help {
                    tooltip: "在下载前预分配文件大小\n如果你的设备支持快速分配，那么强烈推荐开启此选项";
                    alignment: left;

                    CheckBox {
                        text: "文件预分配";
                        checked <=> download_config.pre-allocate;
                    }
                }

                Help {
                    tooltip: "开启后你可以在自定义文件名中使用占位符\n{host} -> 域名或 IP 地址\n{parent_path} -> URL path 中的父路径\n{file_name} -> 完整的文件名\n{file_stem} -> 文件名的前缀\n{file_ext} -> 文件扩展名，含 '.'\n并且支持 strftime 语法，%%、%Y、%m……完整语法请自行查询";

                    CheckBox {
                        text: "解析文件名";
                        horizontal-stretch: 1;
                        checked <=> download_config.parse_filename;
                    }
                }
            }

            HorizontalLayout {
                spacing: 8px;

                Help {
                    tooltip: "开启后从其他地方调用 fast-down 时会弹出添加任务界面来确认\n此时可以临时修改很多配置";
                    CheckBox {
                        text: "下载前确认";
                        checked <=> general_config.ask-before-download;
                    }
                }

                Help {
                    tooltip: "在下载任务完成后，如果检测到软件处于托盘，则会自动退出软件";

                    CheckBox {
                        text: "完成后退出";
                        horizontal-stretch: 1;
                        checked <=> general_config.exit-after-download;
                    }
                }
            }

            HorizontalLayout {
                spacing: 8px;
                Help {
                    tooltip: "开启后会随系统自动启动";

                    CheckBox {
                        text: "开机自启动";
                        horizontal-stretch: 1;
                        checked <=> general_config.auto-start;
                    }
                }

                Help {
                    tooltip: "下次启动时以管理员身份运行，只在 Windows 上生效";

                    CheckBox {
                        text: "管理员运行";
                        horizontal-stretch: 1;
                        checked <=> general_config.run-as-admin;
                    }
                }
            }

            Text {
                text: "写入方法";
            }

            ComboBox {
                model: ["内存映射文件 (推荐)", "标准库 (兼容性好)"];
                current-index <=> download_config.write-method;
            }

            Help {
                tooltip: "外部调用下载时，会自动去除掉这些请求头";
                alignment: left;

                Text {
                    text: "跳过请求头";
                }
            }

            TextEdit {
                text <=> general_config.skip-headers;
                min-height: 100px;
                placeholder-text: "Accept\nCookie\n一行一个";
            }

            Help {
                tooltip: "使用哪些地址来发送请求\n如果你有多个网卡可用，可以填写他们的对外 IP 地址，请求会在这些 IP 地址上轮换，下载不一定会更快，还会与 VPN 软件冲突";
                alignment: left;

                Text {
                    text: "网卡池";
                }
            }

            TextEdit {
                text <=> download_config.ips;
                min-height: 150px;
                placeholder-text: "192.168.1.8\n192.168.1.9\n留空则使用默认网卡发送请求";
            }

            Button {
                text: "查看日志";
                clicked => {
                    view_log()
                }
            }
        }
    }
}