clauth 0.1.2

A simple Claude Code account switcher - swap OAuth and API profiles in a second
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use inquire::ui::{Attributes, Color, RenderConfig, StyleSheet, Styled};

use crate::profile::Profile;
use crate::usage::UsageInfo;

// ── Terminal palette (cloudy-ui CLI) ──────────────────────────────────────────

pub(crate) const C_RESET: &str = "\x1b[0m";
pub(crate) const C_BOLD: &str = "\x1b[1m";
// Targeted resets — used so inquire's "selected = bold" wrapper does not
// either leak through the whole label or get killed by an early full reset.
pub(crate) const C_NOBOLD: &str = "\x1b[22m"; // normal intensity, keeps current color
pub(crate) const C_FG_OFF: &str = "\x1b[39m"; // default foreground, keeps current attrs
pub(crate) const C_ACCENT: &str = "\x1b[38;2;67;171;229m"; // sapphire
pub(crate) const C_ORANGE: &str = "\x1b[38;2;217;119;87m"; // claude orange
pub(crate) const C_WARNING: &str = "\x1b[38;2;249;226;175m";
pub(crate) const C_DANGER: &str = "\x1b[38;2;243;139;168m";
pub(crate) const C_DIM: &str = "\x1b[38;2;166;173;200m";
pub(crate) const C_FAINT: &str = "\x1b[38;2;127;132;156m";

fn endpoint_label(profile: &Profile) -> String {
    if let Some(url) = &profile.base_url {
        return url.clone();
    }
    let sub = profile
        .credentials
        .as_ref()
        .and_then(|c| c.claude_ai_oauth.as_ref())
        .and_then(|o| o.subscription_type.as_deref())
        .unwrap_or("pro");
    let tier = sub
        .split(['_', ' '])
        .map(|w| {
            let mut chars = w.chars();
            match chars.next() {
                None => String::new(),
                Some(f) => f.to_uppercase().collect::<String>() + chars.as_str(),
            }
        })
        .collect::<Vec<_>>()
        .join(" ");
    format!("Claude {tier}")
}

fn usage_bar(info: &UsageInfo) -> String {
    let Some(window) = &info.five_hour else {
        return String::new();
    };
    let pct = window.utilization.clamp(0.0, 100.0);
    let filled = ((pct / 100.0) * 10.0).round() as usize;
    let bar = format!("{}{}", "█".repeat(filled), "░".repeat(10 - filled));
    let color = if pct >= 80.0 {
        C_DANGER
    } else if pct >= 60.0 {
        C_WARNING
    } else {
        C_DIM
    };
    format!("  {color}[{bar}] {pct:.0}%{C_RESET}")
}

pub(crate) fn format_profile_entry(
    profile: &Profile,
    is_active: bool,
    name_width: usize,
) -> String {
    let endpoint = endpoint_label(profile);
    let key_hint = if profile.base_url.is_some() && profile.api_key.is_some() {
        format!("{C_FAINT} · API key set{C_RESET}")
    } else {
        String::new()
    };
    let cred_warn = if profile.credentials.is_none() {
        format!("{C_WARNING} · no credentials{C_RESET}")
    } else {
        String::new()
    };
    let usage_hint = profile.usage.as_ref().map(usage_bar).unwrap_or_default();
    let name = &profile.name;

    if is_active {
        format!(
            "{C_ACCENT}● {name:<name_width$}{C_NOBOLD}  {C_DIM}{endpoint}{C_RESET}{key_hint}{cred_warn}{usage_hint}"
        )
    } else {
        format!(
            "  {name:<name_width$}{C_NOBOLD}  {C_DIM}{endpoint}{C_RESET}{key_hint}{cred_warn}{usage_hint}"
        )
    }
}

pub(crate) fn format_submenu_title(profile: &Profile) -> String {
    let name = &profile.name;
    let url = endpoint_label(profile);
    let credentials = if profile.credentials.is_none() {
        format!(" · {C_WARNING}no credentials")
    } else {
        String::new()
    };
    let usage_hint = profile.usage.as_ref().map(usage_bar).unwrap_or_default();
    format!(
        "{C_BOLD}{name}{C_RESET}{C_FAINT} · {C_RESET}{C_DIM}{url}{C_FAINT}{credentials}{C_RESET}{usage_hint}"
    )
}

pub(crate) fn build_render_config() -> RenderConfig<'static> {
    let orange = Color::Rgb {
        r: 217,
        g: 119,
        b: 87,
    };
    let blue = Color::Rgb {
        r: 67,
        g: 171,
        b: 229,
    };
    let faint = Color::Rgb {
        r: 127,
        g: 132,
        b: 156,
    };

    RenderConfig::default()
        .with_prompt_prefix(Styled::new("?").with_fg(blue))
        .with_answered_prompt_prefix(Styled::new("?").with_fg(faint))
        .with_highlighted_option_prefix(Styled::new("▶").with_fg(orange))
        .with_selected_option(Some(StyleSheet::new().with_attr(Attributes::BOLD)))
        .with_answer(StyleSheet::new().with_attr(Attributes::ITALIC))
        .with_help_message(StyleSheet::new().with_fg(blue))
}