#!/usr/bin/env bash
# utils.sh — gum-based UI helpers (requires gum)

# ── Catppuccin Mocha palette ─────────────────────────────────────────────
C_MAUVE="#CBA6F7"
C_SKY="#89DCEB"
C_GREEN="#A6E3A1"
C_YELLOW="#F9E2AF"
C_RED="#F38BA8"
C_PINK="#F5C2E7"
C_BASE="#1E1E2E"
C_TEXT="#CDD6F4"
C_SURFACE="#585B70"

# ── Output helpers ────────────────────────────────────────────────────────
info()    { gum log --level info  -- "$*"; }
success() { gum style --foreground "$C_GREEN"  "  ✓  $*"; }
warn()    { gum log --level warn  -- "$*"; }
error()   { gum log --level error -- "$*" >&2; }
die()     { gum style --foreground "$C_RED" --bold "  ✗  $*" >&2; exit 1; }

header() {
    echo ""
    gum style \
        --foreground "$C_MAUVE" --bold \
        --margin "0 2" \
        "◆  $*"
    gum style \
        --foreground "$C_SURFACE" \
        --margin "0 2" \
        "────────────────────────────────────────────────"
    echo ""
}

# ── Prompts ───────────────────────────────────────────────────────────────

# ask VAR "Label" "default"
ask() {
    local var="$1" prompt="$2" default="${3:-}"
    local result
    if [[ -n "$default" ]]; then
        result=$(gum input \
            --value "$default" \
            --prompt "  › " \
            --prompt.foreground "$C_MAUVE" \
            --cursor.foreground "$C_MAUVE" \
            --header "  $prompt" \
            --header.foreground "$C_SKY" \
            --width 70) || true
    else
        result=$(gum input \
            --placeholder "(required)" \
            --prompt "  › " \
            --prompt.foreground "$C_MAUVE" \
            --cursor.foreground "$C_MAUVE" \
            --header "  $prompt" \
            --header.foreground "$C_SKY" \
            --width 70) || true
    fi
    if [[ -z "$result" && -n "$default" ]]; then
        eval "$var=\"\$default\""
    else
        eval "$var=\"\$result\""
    fi
}

# ask_yn VAR "Question" "y|n"
ask_yn() {
    local var="$1" prompt="$2" default="$3"
    local affirmative="Yes" negative="No"
    [[ "$default" == "y" ]] && affirmative="Yes" || affirmative="Yes"
    if gum confirm \
        --affirmative "Yes" \
        --negative "No" \
        --default="$([[ "$default" == "y" ]] && echo Yes || echo No)" \
        --prompt.foreground "$C_SKY" \
        --selected.background "$C_MAUVE" \
        --selected.foreground "$C_BASE" \
        --unselected.foreground "$C_TEXT" \
        "  $prompt"; then
        eval "$var=y"
    else
        eval "$var=n"
    fi
}

# ask_choice VAR "Header" option1 option2 ...
ask_choice() {
    local var="$1" prompt="$2"; shift 2
    local first="$1"
    local result
    result=$(gum choose \
        --cursor "  › " \
        --cursor.foreground "$C_MAUVE" \
        --selected.foreground "$C_MAUVE" \
        --selected.bold \
        --header "  $prompt" \
        --header.foreground "$C_SKY" \
        --height 10 \
        "$@") || true
    if [[ -z "$result" ]]; then
        eval "$var=\"\$first\""
    else
        eval "$var=\"\$result\""
    fi
}

# spin "Title" command args...
spin() {
    local title="$1"; shift
    gum spin \
        --spinner dot \
        --spinner.foreground "$C_MAUVE" \
        --title "  $title" \
        --title.foreground "$C_SKY" \
        -- "$@"
}

require_cmd() {
    command -v "$1" &>/dev/null || die "Required command not found: $1"
}

slugify() {
    echo "$1" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9]/-/g' | sed 's/-\+/-/g' | sed 's/^-//;s/-$//'
}