/// Settings panel — drawer that slides out from the sidebar.
///
/// Mirrors the Svelte app's SettingsTab.svelte: theme selection, font controls,
/// provider configuration. Uses the same drawer pattern (18rem wide,
/// mantle background).

use dioxus::prelude::*;

#[component]
pub fn SettingsPanel() -> Element {
    let mut theme = use_signal(|| "Catppuccin Mocha".to_string());
    let mut ui_font = use_signal(|| "Inter".to_string());
    let mut term_font = use_signal(|| "JetBrains Mono".to_string());
    let mut default_shell = use_signal(|| "/bin/bash".to_string());

    rsx! {
        div { class: "drawer-panel",
            div { class: "drawer-title", "Settings" }

            // Appearance section
            div { class: "settings-section",
                div { class: "settings-section-title", "Appearance" }

                div { class: "settings-row",
                    span { class: "settings-label", "Theme" }
                    select {
                        class: "settings-select",
                        value: "{theme}",
                        onchange: move |e| theme.set(e.value()),
                        option { value: "Catppuccin Mocha", "Catppuccin Mocha" }
                        option { value: "Catppuccin Macchiato", "Catppuccin Macchiato" }
                        option { value: "Tokyo Night", "Tokyo Night" }
                        option { value: "Dracula", "Dracula" }
                        option { value: "Nord", "Nord" }
                    }
                }

                div { class: "settings-row",
                    span { class: "settings-label", "UI Font" }
                    select {
                        class: "settings-select",
                        value: "{ui_font}",
                        onchange: move |e| ui_font.set(e.value()),
                        option { value: "Inter", "Inter" }
                        option { value: "system-ui", "System UI" }
                        option { value: "IBM Plex Sans", "IBM Plex Sans" }
                    }
                }

                div { class: "settings-row",
                    span { class: "settings-label", "Terminal Font" }
                    select {
                        class: "settings-select",
                        value: "{term_font}",
                        onchange: move |e| term_font.set(e.value()),
                        option { value: "JetBrains Mono", "JetBrains Mono" }
                        option { value: "Fira Code", "Fira Code" }
                        option { value: "Cascadia Code", "Cascadia Code" }
                    }
                }
            }

            // Defaults section
            div { class: "settings-section",
                div { class: "settings-section-title", "Defaults" }

                div { class: "settings-row",
                    span { class: "settings-label", "Shell" }
                    select {
                        class: "settings-select",
                        value: "{default_shell}",
                        onchange: move |e| default_shell.set(e.value()),
                        option { value: "/bin/bash", "/bin/bash" }
                        option { value: "/bin/zsh", "/bin/zsh" }
                        option { value: "/usr/bin/fish", "/usr/bin/fish" }
                    }
                }
            }

            // Providers section
            div { class: "settings-section",
                div { class: "settings-section-title", "Providers" }

                ProviderCard {
                    name: "Claude",
                    model: "claude-sonnet-4-20250514",
                    status: "Available",
                    accent: "var(--ctp-mauve)",
                }
                ProviderCard {
                    name: "Codex",
                    model: "gpt-5.4",
                    status: "Available",
                    accent: "var(--ctp-green)",
                }
                ProviderCard {
                    name: "Ollama",
                    model: "qwen3:8b",
                    status: "Not running",
                    accent: "var(--ctp-peach)",
                }
            }
        }
    }
}

#[component]
fn ProviderCard(
    name: String,
    model: String,
    status: String,
    accent: String,
) -> Element {
    let is_available = status == "Available";

    let badge_bg = if is_available {
        "color-mix(in srgb, var(--ctp-green) 15%, transparent)"
    } else {
        "color-mix(in srgb, var(--ctp-overlay0) 15%, transparent)"
    };
    let badge_color = if is_available {
        "var(--ctp-green)"
    } else {
        "var(--ctp-overlay0)"
    };
    let badge_style = format!(
        "font-size: 0.625rem; padding: 0.0625rem 0.3125rem; border-radius: 0.1875rem; background: {badge_bg}; color: {badge_color};"
    );

    rsx! {
        div {
            style: "background: var(--ctp-surface0); border-radius: 0.375rem; padding: 0.5rem 0.75rem; margin-bottom: 0.5rem;",

            div {
                style: "display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.25rem;",
                span {
                    style: "font-weight: 600; font-size: 0.8125rem; color: {accent};",
                    "{name}"
                }
                span {
                    style: "{badge_style}",
                    "{status}"
                }
            }
            div {
                style: "font-size: 0.6875rem; color: var(--ctp-overlay1); font-family: var(--term-font-family);",
                "{model}"
            }
        }
    }
}