// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.

//! Inline SVG icons.
//!
//! Vendored from [Lucide](https://lucide.dev) (ISC) for UI glyphs and
//! [Simple Icons](https://simpleicons.org) (CC0) for brands, inlined so no page
//! makes a network request. Icons inherit `currentColor` and size to `1em`.

use maud::{Markup, PreEscaped, html};

/// A vendored icon.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Icon {
    PanelLeft,
    Folder,
    File,
    GitBranch,
    Issue,
    GitPull,
    History,
    ChevronDown,
    Search,
    Copy,
    Plus,
    Box,
    Link,
    User,
    Settings,
    LogOut,
    Upload,
    Dashboard,
    Compass,
    MapPin,
    Mail,
    Check,
    X,
    Scale,
    Globe,
    Download,
    Mirror,
    GitFork,
    Bookmark,
    Users,
    Bell,
    Github,
    Mastodon,
}

impl Icon {
    /// Whether the icon is a filled brand glyph rather than a stroked Lucide one.
    fn brand(self) -> bool {
        matches!(self, Icon::Github | Icon::Mastodon)
    }

    /// The inner SVG geometry.
    fn geometry(self) -> &'static str {
        match self {
            Icon::PanelLeft => {
                r#"<rect width="18" height="18" x="3" y="3" rx="2"/><path d="M9 3v18"/>"#
            }
            Icon::Folder => {
                r#"<path d="M20 20a2 2 0 0 0 2-2V8a2 2 0 0 0-2-2h-7.9a2 2 0 0 1-1.69-.9L9.6 3.9A2 2 0 0 0 7.93 3H4a2 2 0 0 0-2 2v13a2 2 0 0 0 2 2Z"/>"#
            }
            Icon::File => {
                r#"<path d="M6 22a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h8a2.4 2.4 0 0 1 1.704.706l3.588 3.588A2.4 2.4 0 0 1 20 8v12a2 2 0 0 1-2 2z"/><path d="M14 2v5a1 1 0 0 0 1 1h5"/>"#
            }
            Icon::GitBranch => {
                r#"<path d="M15 6a9 9 0 0 0-9 9V3"/><circle cx="18" cy="6" r="3"/><circle cx="6" cy="18" r="3"/>"#
            }
            Icon::Issue => r#"<circle cx="12" cy="12" r="10"/><circle cx="12" cy="12" r="1"/>"#,
            Icon::GitPull => {
                r#"<circle cx="18" cy="18" r="3"/><circle cx="6" cy="6" r="3"/><path d="M13 6h3a2 2 0 0 1 2 2v7"/><line x1="6" x2="6" y1="9" y2="21"/>"#
            }
            Icon::History => {
                r#"<path d="M3 12a9 9 0 1 0 9-9 9.75 9.75 0 0 0-6.74 2.74L3 8"/><path d="M3 3v5h5"/><path d="M12 7v5l4 2"/>"#
            }
            Icon::ChevronDown => r#"<path d="m6 9 6 6 6-6"/>"#,
            Icon::Plus => r#"<path d="M5 12h14"/><path d="M12 5v14"/>"#,
            Icon::Search => r#"<path d="m21 21-4.34-4.34"/><circle cx="11" cy="11" r="8"/>"#,
            Icon::Copy => {
                r#"<rect width="14" height="14" x="8" y="8" rx="2" ry="2"/><path d="M4 16c-1.1 0-2-.9-2-2V4c0-1.1.9-2 2-2h10c1.1 0 2 .9 2 2"/>"#
            }
            Icon::Box => {
                r#"<path d="M21 8a2 2 0 0 0-1-1.73l-7-4a2 2 0 0 0-2 0l-7 4A2 2 0 0 0 3 8v8a2 2 0 0 0 1 1.73l7 4a2 2 0 0 0 2 0l7-4A2 2 0 0 0 21 16Z"/><path d="m3.3 7 8.7 5 8.7-5"/><path d="M12 22V12"/>"#
            }
            Icon::Link => {
                r#"<path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"/><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"/>"#
            }
            Icon::User => {
                r#"<path d="M19 21v-2a4 4 0 0 0-4-4H9a4 4 0 0 0-4 4v2"/><circle cx="12" cy="7" r="4"/>"#
            }
            Icon::Settings => {
                r#"<path d="M9.671 4.136a2.34 2.34 0 0 1 4.659 0 2.34 2.34 0 0 0 3.319 1.915 2.34 2.34 0 0 1 2.33 4.033 2.34 2.34 0 0 0 0 3.831 2.34 2.34 0 0 1-2.33 4.033 2.34 2.34 0 0 0-3.319 1.915 2.34 2.34 0 0 1-4.659 0 2.34 2.34 0 0 0-3.32-1.915 2.34 2.34 0 0 1-2.33-4.033 2.34 2.34 0 0 0 0-3.831A2.34 2.34 0 0 1 6.35 6.051a2.34 2.34 0 0 0 3.319-1.915"/><circle cx="12" cy="12" r="3"/>"#
            }
            Icon::LogOut => {
                r#"<path d="m16 17 5-5-5-5"/><path d="M21 12H9"/><path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4"/>"#
            }
            Icon::Upload => {
                r#"<path d="M12 3v12"/><path d="m17 8-5-5-5 5"/><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/>"#
            }
            Icon::Dashboard => {
                r#"<rect width="7" height="9" x="3" y="3" rx="1"/><rect width="7" height="5" x="14" y="3" rx="1"/><rect width="7" height="9" x="14" y="12" rx="1"/><rect width="7" height="5" x="3" y="16" rx="1"/>"#
            }
            Icon::Compass => {
                r#"<circle cx="12" cy="12" r="10"/><path d="m16.24 7.76-1.804 5.411a2 2 0 0 1-1.265 1.265L7.76 16.24l1.804-5.411a2 2 0 0 1 1.265-1.265z"/>"#
            }
            Icon::MapPin => {
                r#"<path d="M20 10c0 4.993-5.539 10.193-7.399 11.799a1 1 0 0 1-1.202 0C9.539 20.193 4 14.993 4 10a8 8 0 0 1 16 0"/><circle cx="12" cy="10" r="3"/>"#
            }
            Icon::Mail => {
                r#"<rect width="20" height="16" x="2" y="4" rx="2"/><path d="m22 7-8.97 5.7a1.94 1.94 0 0 1-2.06 0L2 7"/>"#
            }
            Icon::Check => r#"<path d="M20 6 9 17l-5-5"/>"#,
            Icon::X => r#"<path d="M18 6 6 18"/><path d="m6 6 12 12"/>"#,
            Icon::Scale => {
                r#"<path d="m16 16 3-8 3 8c-.87.65-1.92 1-3 1s-2.13-.35-3-1Z"/><path d="m2 16 3-8 3 8c-.87.65-1.92 1-3 1s-2.13-.35-3-1Z"/><path d="M7 21h10"/><path d="M12 3v18"/><path d="M3 7h2c2 0 5-1 7-2 2 1 5 2 7 2h2"/>"#
            }
            Icon::Globe => {
                r#"<circle cx="12" cy="12" r="10"/><path d="M12 2a14.5 14.5 0 0 0 0 20 14.5 14.5 0 0 0 0-20"/><path d="M2 12h20"/>"#
            }
            Icon::Download => {
                r#"<path d="M12 15V3"/><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><path d="m7 10 5 5 5-5"/>"#
            }
            // Lucide "refresh-cw": circular arrows, for a mirror (kept in sync).
            Icon::Mirror => {
                r#"<path d="M3 12a9 9 0 0 1 9-9 9.75 9.75 0 0 1 6.74 2.74L21 8"/><path d="M21 3v5h-5"/><path d="M21 12a9 9 0 0 1-9 9 9.75 9.75 0 0 1-6.74-2.74L3 16"/><path d="M8 16H3v5"/>"#
            }
            // Lucide "git-fork": two branches diverging from a commit.
            Icon::GitFork => {
                r#"<circle cx="12" cy="18" r="3"/><circle cx="6" cy="6" r="3"/><circle cx="18" cy="6" r="3"/><path d="M18 9v2c0 .6-.4 1-1 1H7c-.6 0-1-.4-1-1V9"/><path d="M12 12v3"/>"#
            }
            // Lucide "bookmark".
            Icon::Bookmark => r#"<path d="m19 21-7-4-7 4V5a2 2 0 0 1 2-2h10a2 2 0 0 1 2 2v16z"/>"#,
            // Lucide "users": follower/following counts.
            Icon::Users => {
                r#"<path d="M16 21v-2a4 4 0 0 0-4-4H6a4 4 0 0 0-4 4v2"/><circle cx="9" cy="7" r="4"/><path d="M22 21v-2a4 4 0 0 0-3-3.87"/><path d="M16 3.13a4 4 0 0 1 0 7.75"/>"#
            }
            // Lucide "bell": notifications.
            Icon::Bell => {
                r#"<path d="M10.268 21a2 2 0 0 0 3.464 0"/><path d="M3.262 15.326A1 1 0 0 0 4 17h16a1 1 0 0 0 .74-1.673C19.41 13.956 18 12.499 18 8A6 6 0 0 0 6 8c0 4.499-1.411 5.956-2.738 7.326"/>"#
            }
            Icon::Github => {
                r#"<path d="M12 .297c-6.63 0-12 5.373-12 12 0 5.303 3.438 9.8 8.205 11.385.6.113.82-.258.82-.577 0-.285-.01-1.04-.015-2.04-3.338.724-4.042-1.61-4.042-1.61C4.422 18.07 3.633 17.7 3.633 17.7c-1.087-.744.084-.729.084-.729 1.205.084 1.838 1.236 1.838 1.236 1.07 1.835 2.809 1.305 3.495.998.108-.776.417-1.305.76-1.605-2.665-.3-5.466-1.332-5.466-5.93 0-1.31.465-2.38 1.235-3.22-.135-.303-.54-1.523.105-3.176 0 0 1.005-.322 3.3 1.23.96-.267 1.98-.399 3-.405 1.02.006 2.04.138 3 .405 2.28-1.552 3.285-1.23 3.285-1.23.645 1.653.24 2.873.12 3.176.765.84 1.23 1.91 1.23 3.22 0 4.61-2.805 5.625-5.475 5.92.42.36.81 1.096.81 2.22 0 1.606-.015 2.896-.015 3.286 0 .315.21.69.825.57C20.565 22.092 24 17.592 24 12.297c0-6.627-5.373-12-12-12"/>"#
            }
            Icon::Mastodon => {
                r#"<path d="M23.268 5.313c-.35-2.578-2.617-4.61-5.304-5.004C17.51.242 15.792 0 11.813 0h-.03c-3.98 0-4.835.242-5.288.309C3.882.692 1.496 2.518.917 5.127.64 6.412.61 7.837.661 9.143c.074 1.874.088 3.745.26 5.611.118 1.24.325 2.47.62 3.68.55 2.237 2.777 4.098 4.96 4.857 2.336.792 4.849.923 7.256.38.265-.061.527-.132.786-.213.585-.184 1.27-.39 1.774-.753a.057.057 0 0 0 .023-.043v-1.809a.052.052 0 0 0-.02-.041.053.053 0 0 0-.046-.01 20.282 20.282 0 0 1-4.709.545c-2.73 0-3.463-1.284-3.674-1.818a5.593 5.593 0 0 1-.319-1.433.053.053 0 0 1 .066-.054c1.517.363 3.072.546 4.632.546.376 0 .75 0 1.125-.01 1.57-.044 3.224-.124 4.768-.422.038-.008.077-.015.11-.024 2.435-.464 4.753-1.92 4.989-5.604.008-.145.03-1.52.03-1.67.002-.512.167-3.63-.024-5.545zm-3.748 9.195h-2.561V8.29c0-1.309-.55-1.976-1.67-1.976-1.23 0-1.846.79-1.846 2.35v3.403h-2.546V8.663c0-1.56-.617-2.35-1.848-2.35-1.112 0-1.668.668-1.67 1.977v6.218H4.822V8.102c0-1.31.337-2.35 1.011-3.12.696-.77 1.608-1.164 2.74-1.164 1.311 0 2.302.5 2.962 1.498l.638 1.06.638-1.06c.66-.999 1.65-1.498 2.96-1.498 1.13 0 2.043.395 2.74 1.164.675.77 1.012 1.81 1.012 3.12z"/>"#
            }
        }
    }
}

/// Render an icon inheriting `currentColor` and sized to `1em`.
#[must_use]
pub fn icon(name: Icon) -> Markup {
    let brand = name.brand();
    html! {
        svg class="icon" viewBox="0 0 24 24" width="1em" height="1em"
            fill=(if brand { "currentColor" } else { "none" })
            stroke=(if brand { "none" } else { "currentColor" })
            stroke-width="2" stroke-linecap="round" stroke-linejoin="round"
            aria-hidden="true" focusable="false" {
            (PreEscaped(name.geometry()))
        }
    }
}