// SPDX-License-Identifier: GPL-3.0-only

use cosmic::iced::{Alignment, Length};

use cosmic::iced_widget::{column, row};

use cosmic::widget::{self, button, text};

use cosmic::{Apply, Element};

use crate::core::app::AppModel;

use crate::ui::icons;

use crate::ui::messages::{Message, ModelsPageMessage};

use super::surface::muted_text_color;

/// Right-side "Add a backend" sheet, rendered as a COSMIC context drawer. It

/// holds the two manual install paths that used to crowd the top of the

/// Download tab — install from a Git repository URL, or import a local

/// directory. The drawer is scoped to the Models page and dismisses itself on

/// navigation or daemon disconnect (enforced in `AppModel::context_drawer`).

pub fn add_backend_sheet(app: &AppModel) -> Element<'_, Message> {

    let spacing = cosmic::theme::spacing();

    let muted = muted_text_color();

    // From a repository: URL input + Install, with the unverified-source note.

    let can_install = !app.registry.custom_repo_input.trim().is_empty();

    let install_btn = if can_install {

        button::suggested("Install").on_press(Message::ModelsPage(

            ModelsPageMessage::InstallBackendFromRepoUrl(app.registry.custom_repo_input.clone()),

        ))

    } else {

        button::suggested("Install")

    };

    let repo_section = column![

        text::title4("From a repository"),

        text::body(

            "Paste a Git repository URL. Super STT resolves the latest release, \

             verifies its manifest, and installs it."

        )

        .class(cosmic::theme::Text::Color(muted)),

        row![

            widget::text_input(

                "https://github.com/owner/backend",

                &app.registry.custom_repo_input

            )

            .on_input(|x| Message::ModelsPage(ModelsPageMessage::RegistryCustomRepoInputChanged(x)))

            .width(Length::Fill),

            install_btn,

        ]

        .spacing(spacing.space_xs)

        .align_y(Alignment::Center),

        row![

            icons::phosphor_warning(icons::WARNING, 15.0),

            text::caption("Unverified source — only HTTPS protects this download."),

        ]

        .spacing(spacing.space_xs)

        .align_y(Alignment::Center),

    ]

    .spacing(spacing.space_s)

    .apply(widget::container)

    .class(cosmic::theme::Container::List)

    .padding(spacing.space_m)

    .width(Length::Fill);

    // From a folder: import a local backend directory.

    let dir_section = column![

        text::title4("From a folder"),

        text::body("Point Super STT at a local directory that contains a backend.toml manifest.")

            .class(cosmic::theme::Text::Color(muted)),

        button::standard("Choose folder\u{2026}")

            .on_press(Message::ModelsPage(ModelsPageMessage::ImportBackendFromDir)),

    ]

    .spacing(spacing.space_s)

    .apply(widget::container)

    .class(cosmic::theme::Container::List)

    .padding(spacing.space_m)

    .width(Length::Fill);

    column![repo_section, dir_section]

        .spacing(spacing.space_m)

        .width(Length::Fill)

        .into()

}