pandora-kit 0.6.5

use hefesto_widgets::{Badge, BadgeAnchor, BadgeStack, PopupSize};
use ratatui::style::Color;

const MAX_BADGE_WIDTH: u16 = 40;

// ─── CLI args ─────────────────────────────────────────────

#[derive(clap::Args)]
pub struct BadgeArgs {
    /// Badge to display (format: text|color|anchor|WxL). Repeatable.
    #[arg(long = "badge", value_name = "TEXT|COLOR|ANCHOR|WxL")]
    pub badges: Vec<String>,

    /// Fixed width for badges (0 = auto per-badge)
    #[arg(long, default_value = "0")]
    pub badge_width: u16,

    /// Number of content lines for each badge (default: 1)
    #[arg(long, default_value = "1")]
    pub badge_lines: u16,

    /// Badge anchor position: tl, t, tr, bl, b, br, l, r (default: top-left)
    #[arg(long, default_value = "tl")]
    pub badge_anchor: String,
}

impl BadgeArgs {
    pub fn prepare_specs(&self) -> Vec<BadgeSpec> {
        let global_anchor = parse_anchor(&self.badge_anchor).unwrap_or(BadgeAnchor::TopLeft);
        let global_width = if self.badge_width > 0 { Some(self.badge_width) } else { None };
        self.badges.iter()
            .map(|s| prepare_badge(parse_badge_arg(s), global_anchor, self.badge_lines, global_width))
            .collect()
    }
}

// ─── Types ────────────────────────────────────────────────

pub struct BadgeParts {
    pub text: String,
    pub color: Color,
    pub anchor: Option<BadgeAnchor>,
    pub width: Option<u16>,
    pub lines: Option<u16>,
}

pub struct BadgeSpec {
    pub display: String,
    pub color: Color,
    pub badge_w: u16,
    pub lines: u16,
    pub anchor: BadgeAnchor,
}

impl BadgeSpec {
    pub fn into_badge(&self) -> Badge<'_> {
        let mut badge = if self.lines > 1 && self.display.contains('\n') {
            let lines: Vec<ratatui::text::Line<'_>> =
                self.display.split('\n').map(ratatui::text::Line::from).collect();
            Badge::with_content(lines, self.color)
                .width(PopupSize::Fixed(self.badge_w))
                .height(PopupSize::Fixed(self.lines + 2))
                .closable(false)
        } else {
            Badge::new(&self.display, self.color)
                .width(PopupSize::Fixed(self.badge_w))
                .height(PopupSize::Fixed(self.lines + 2))
                .closable(false)
        };
        badge = badge.anchor(self.anchor);
        badge
    }
}

// ─── Parsing ─────────────────────────────────────────────

pub fn parse_color(s: &str) -> Option<Color> {
    match s.to_lowercase().as_str() {
        "green" => Some(Color::Green),
        "red" => Some(Color::Red),
        "yellow" => Some(Color::Yellow),
        "blue" => Some(Color::Blue),
        "cyan" => Some(Color::Cyan),
        "magenta" => Some(Color::Magenta),
        "white" => Some(Color::White),
        "black" => Some(Color::Black),
        "gray" | "grey" => Some(Color::Gray),
        "darkgray" | "darkgrey" => Some(Color::DarkGray),
        "lightred" => Some(Color::LightRed),
        "lightgreen" => Some(Color::LightGreen),
        "lightyellow" => Some(Color::LightYellow),
        "lightblue" => Some(Color::LightBlue),
        "lightmagenta" => Some(Color::LightMagenta),
        "lightcyan" => Some(Color::LightCyan),
        _ => None,
    }
}

pub fn parse_anchor(s: &str) -> Option<BadgeAnchor> {
    match s.to_lowercase().as_str() {
        "tl" | "top-left" => Some(BadgeAnchor::TopLeft),
        "t" | "top" => Some(BadgeAnchor::Top),
        "tr" | "top-right" => Some(BadgeAnchor::TopRight),
        "bl" | "bottom-left" => Some(BadgeAnchor::BottomLeft),
        "b" | "bottom" => Some(BadgeAnchor::Bottom),
        "br" | "bottom-right" => Some(BadgeAnchor::BottomRight),
        "l" | "left" => Some(BadgeAnchor::Left),
        "r" | "right" => Some(BadgeAnchor::Right),
        _ => None,
    }
}

pub fn parse_dimensions(s: &str) -> (Option<u16>, Option<u16>) {
    if let Some((w, l)) = s.split_once('x') {
        (w.parse().ok(), l.parse().ok())
    } else {
        (s.parse().ok(), None)
    }
}

pub fn parse_badge_arg(s: &str) -> BadgeParts {
    let parts: Vec<&str> = s.split('|').collect();
    BadgeParts {
        text: parts[0].to_string(),
        color: parts.get(1).and_then(|c| parse_color(c)).unwrap_or(Color::Gray),
        anchor: parts.get(2).and_then(|a| parse_anchor(a)),
        width: parts.get(3).map(|d| parse_dimensions(d).0).flatten(),
        lines: parts.get(3).map(|d| parse_dimensions(d).1).flatten(),
    }
}

// ─── Text fitting ────────────────────────────────────────

fn truncate_with_ellipsis(text: &str, max_len: usize) -> String {
    if text.len() <= max_len {
        return text.to_string();
    }
    let mut t: String = text.chars().take(max_len.saturating_sub(1)).collect();
    t.push('…');
    t
}

fn wrap_text(text: &str, content_w: usize, max_lines: u16) -> String {
    let mut result = String::new();
    let mut remaining = text;
    for i in 0..max_lines as usize {
        if remaining.is_empty() { break; }
        let chunk_len = remaining.len().min(content_w);
        let (chunk, rest) = remaining.split_at(chunk_len);
        if i > 0 { result.push('\n'); }
        if i == max_lines as usize - 1 && !rest.is_empty() {
            let mut t: String = chunk.chars().take(content_w.saturating_sub(1)).collect();
            t.push('…');
            result.push_str(&t);
        } else {
            result.push_str(chunk);
        }
        remaining = rest;
    }
    result
}

// ─── Building ────────────────────────────────────────────

pub fn prepare_badge(parts: BadgeParts, global_anchor: BadgeAnchor, global_lines: u16, global_width: Option<u16>) -> BadgeSpec {
    let anchor = parts.anchor.unwrap_or(global_anchor);
    let lines = parts.lines.unwrap_or(global_lines);
    let badge_w = parts.width.or(global_width).unwrap_or_else(|| {
        (parts.text.len() as u16 + 4).max(10).min(MAX_BADGE_WIDTH)
    });
    let content_w = badge_w.saturating_sub(2) as usize;

    let display = if parts.text.len() <= content_w {
        parts.text.to_string()
    } else if lines > 1 {
        wrap_text(&parts.text, content_w, lines)
    } else {
        truncate_with_ellipsis(&parts.text, content_w)
    };

    BadgeSpec { display, color: parts.color, badge_w, lines, anchor }
}

pub fn build_badge_stack(specs: &[BadgeSpec]) -> BadgeStack<'_> {
    let mut stack = BadgeStack::new();
    for spec in specs {
        stack = stack.push(spec.into_badge());
    }
    stack
}

// ─── Tests ───────────────────────────────────────────────

#[cfg(test)]
mod tests {
    use super::*;

    // ── parse_color ──

    #[test]
    fn parse_color_green() {
        assert_eq!(parse_color("green"), Some(Color::Green));
    }

    #[test]
    fn parse_color_case_insensitive() {
        assert_eq!(parse_color("RED"), Some(Color::Red));
        assert_eq!(parse_color("Cyan"), Some(Color::Cyan));
    }

    #[test]
    fn parse_color_unknown_returns_none() {
        assert_eq!(parse_color("pink"), None);
        assert_eq!(parse_color(""), None);
    }

    #[test]
    fn parse_color_gray_aliases() {
        assert_eq!(parse_color("gray"), Some(Color::Gray));
        assert_eq!(parse_color("grey"), Some(Color::Gray));
    }

    // ── parse_anchor ──

    #[test]
    fn parse_anchor_tl() {
        assert_eq!(parse_anchor("tl"), Some(BadgeAnchor::TopLeft));
        assert_eq!(parse_anchor("top-left"), Some(BadgeAnchor::TopLeft));
    }

    #[test]
    fn parse_anchor_tr() {
        assert_eq!(parse_anchor("tr"), Some(BadgeAnchor::TopRight));
        assert_eq!(parse_anchor("top-right"), Some(BadgeAnchor::TopRight));
    }

    #[test]
    fn parse_anchor_bl() {
        assert_eq!(parse_anchor("bl"), Some(BadgeAnchor::BottomLeft));
        assert_eq!(parse_anchor("bottom-left"), Some(BadgeAnchor::BottomLeft));
    }

    #[test]
    fn parse_anchor_b() {
        assert_eq!(parse_anchor("b"), Some(BadgeAnchor::Bottom));
        assert_eq!(parse_anchor("bottom"), Some(BadgeAnchor::Bottom));
    }

    #[test]
    fn parse_anchor_l() {
        assert_eq!(parse_anchor("l"), Some(BadgeAnchor::Left));
        assert_eq!(parse_anchor("left"), Some(BadgeAnchor::Left));
    }

    #[test]
    fn parse_anchor_r() {
        assert_eq!(parse_anchor("r"), Some(BadgeAnchor::Right));
        assert_eq!(parse_anchor("right"), Some(BadgeAnchor::Right));
    }

    #[test]
    fn parse_anchor_t() {
        assert_eq!(parse_anchor("t"), Some(BadgeAnchor::Top));
        assert_eq!(parse_anchor("top"), Some(BadgeAnchor::Top));
    }

    #[test]
    fn parse_anchor_br() {
        assert_eq!(parse_anchor("br"), Some(BadgeAnchor::BottomRight));
        assert_eq!(parse_anchor("bottom-right"), Some(BadgeAnchor::BottomRight));
    }

    #[test]
    fn parse_anchor_invalid() {
        assert_eq!(parse_anchor("xyz"), None);
        assert_eq!(parse_anchor(""), None);
    }

    // ── parse_dimensions ──

    #[test]
    fn parse_dimensions_width_only() {
        assert_eq!(parse_dimensions("20"), (Some(20), None));
    }

    #[test]
    fn parse_dimensions_width_and_lines() {
        assert_eq!(parse_dimensions("20x2"), (Some(20), Some(2)));
    }

    #[test]
    fn parse_dimensions_invalid() {
        assert_eq!(parse_dimensions("abc"), (None, None));
    }

    // ── parse_badge_arg ──

    #[test]
    fn parse_badge_arg_text_only() {
        let p = parse_badge_arg("main");
        assert_eq!(p.text, "main");
        assert_eq!(p.color, Color::Gray);
        assert!(p.anchor.is_none());
        assert!(p.width.is_none());
        assert!(p.lines.is_none());
    }

    #[test]
    fn parse_badge_arg_text_and_color() {
        let p = parse_badge_arg("main|red");
        assert_eq!(p.text, "main");
        assert_eq!(p.color, Color::Red);
        assert!(p.anchor.is_none());
    }

    #[test]
    fn parse_badge_arg_all_parts() {
        let p = parse_badge_arg("main|red|tr|20x2");
        assert_eq!(p.text, "main");
        assert_eq!(p.color, Color::Red);
        assert_eq!(p.anchor, Some(BadgeAnchor::TopRight));
        assert_eq!(p.width, Some(20));
        assert_eq!(p.lines, Some(2));
    }

    #[test]
    fn parse_badge_arg_text_with_colon() {
        let p = parse_badge_arg("time:10:30|blue");
        assert_eq!(p.text, "time:10:30");
        assert_eq!(p.color, Color::Blue);
    }

    #[test]
    fn parse_badge_arg_anchor_without_width() {
        let p = parse_badge_arg("main|red|bl");
        assert_eq!(p.text, "main");
        assert_eq!(p.color, Color::Red);
        assert_eq!(p.anchor, Some(BadgeAnchor::BottomLeft));
        assert!(p.width.is_none());
    }

    #[test]
    fn parse_badge_arg_width_without_anchor() {
        let p = parse_badge_arg("main|red||20");
        assert_eq!(p.text, "main");
        assert_eq!(p.color, Color::Red);
        assert!(p.anchor.is_none());
        assert_eq!(p.width, Some(20));
        assert!(p.lines.is_none());
    }

    // ── truncate_with_ellipsis ──

    #[test]
    fn truncate_fits_no_change() {
        assert_eq!(truncate_with_ellipsis("hello", 10), "hello");
    }

    #[test]
    fn truncate_adds_ellipsis() {
        let result = truncate_with_ellipsis("hello world", 6);
        assert_eq!(result, "hello…");
    }

    // ── wrap_text ──

    #[test]
    fn wrap_text_single_line() {
        assert_eq!(wrap_text("hello", 10, 1), "hello");
    }

    #[test]
    fn wrap_text_multi_chunks() {
        let result = wrap_text("hello world", 5, 3);
        assert_eq!(result, "hello\n worl\nd");
    }

    #[test]
    fn wrap_text_last_line_ellipsis() {
        let result = wrap_text("hello world foo", 5, 2);
        assert_eq!(result, "hello\n wor…");
    }

    // ── prepare_badge ──

    fn prepare_badge_simple(text: &str, color: Color, lines: u16, fixed_w: Option<u16>) -> BadgeSpec {
        let parts = BadgeParts {
            text: text.to_string(),
            color,
            anchor: None,
            width: fixed_w,
            lines: None,
        };
        prepare_badge(parts, BadgeAnchor::TopLeft, lines, fixed_w)
    }

    #[test]
    fn prepare_badge_auto_width() {
        let spec = prepare_badge_simple("prod", Color::Red, 1, None);
        assert_eq!(spec.display, "prod");
        assert_eq!(spec.color, Color::Red);
        assert!(spec.badge_w >= 10);
    }

    #[test]
    fn prepare_badge_fixed_width_truncates() {
        let spec = prepare_badge_simple("hello world", Color::Red, 1, Some(10));
        assert_eq!(spec.display, "hello w…");
        assert_eq!(spec.badge_w, 10);
    }

    #[test]
    fn prepare_badge_fixed_width_wraps() {
        let spec = prepare_badge_simple("hello world", Color::Red, 2, Some(10));
        assert_eq!(spec.badge_w, 10);
        assert!(spec.display.contains('\n'));
    }

    #[test]
    fn prepare_badge_respects_per_badge_anchor() {
        let parts = BadgeParts {
            text: "main".to_string(),
            color: Color::Red,
            anchor: Some(BadgeAnchor::TopRight),
            width: None,
            lines: None,
        };
        let spec = prepare_badge(parts, BadgeAnchor::TopLeft, 1, None);
        assert_eq!(spec.anchor, BadgeAnchor::TopRight);
    }

    #[test]
    fn prepare_badge_inherits_global_anchor() {
        let parts = BadgeParts {
            text: "main".to_string(),
            color: Color::Red,
            anchor: None,
            width: None,
            lines: None,
        };
        let spec = prepare_badge(parts, BadgeAnchor::BottomRight, 1, None);
        assert_eq!(spec.anchor, BadgeAnchor::BottomRight);
    }

    // ── BadgeArgs ──

    #[test]
    fn badge_args_prepare_specs_empty() {
        let args = BadgeArgs {
            badges: vec![],
            badge_width: 0,
            badge_lines: 1,
            badge_anchor: "tl".to_string(),
        };
        let specs = args.prepare_specs();
        assert!(specs.is_empty());
    }

    #[test]
    fn badge_args_prepare_specs_uses_globals() {
        let args = BadgeArgs {
            badges: vec!["main".to_string()],
            badge_width: 0,
            badge_lines: 1,
            badge_anchor: "tr".to_string(),
        };
        let specs = args.prepare_specs();
        assert_eq!(specs.len(), 1);
        assert_eq!(specs[0].anchor, BadgeAnchor::TopRight);
    }
}