(ns ui.button-test
  (:require [clojure.test :refer [deftest is testing]]
            [ui.button :as button]))

(deftest button-class-list-test
  (testing "default variant and size"
    (is (= ["btn" "btn--secondary"] (button/button-class-list {}))))

  (testing "explicit variant"
    (is (= ["btn" "btn--primary"] (button/button-class-list {:variant :primary})))
    (is (= ["btn" "btn--ghost"] (button/button-class-list {:variant :ghost})))
    (is (= ["btn" "btn--danger"] (button/button-class-list {:variant :danger}))))

  (testing "explicit size"
    (is (= ["btn" "btn--secondary" "btn--sm"] (button/button-class-list {:size :sm})))
    (is (= ["btn" "btn--secondary"] (button/button-class-list {:size :md})))
    (is (= ["btn" "btn--secondary" "btn--lg"] (button/button-class-list {:size :lg}))))

  (testing "variant + size combined"
    (is (= ["btn" "btn--primary" "btn--lg"] (button/button-class-list {:variant :primary :size :lg})))))

(deftest button-classes-test
  (testing "default variant and size"
    (is (= "btn btn--secondary" (button/button-classes {}))))

  (testing "explicit variant"
    (is (= "btn btn--primary" (button/button-classes {:variant :primary})))
    (is (= "btn btn--ghost" (button/button-classes {:variant :ghost})))
    (is (= "btn btn--danger" (button/button-classes {:variant :danger})))
    (is (= "btn btn--secondary" (button/button-classes {:variant :secondary}))))

  (testing "explicit size"
    (is (= "btn btn--secondary btn--sm" (button/button-classes {:size :sm})))
    (is (= "btn btn--secondary" (button/button-classes {:size :md})))
    (is (= "btn btn--secondary btn--lg" (button/button-classes {:size :lg}))))

  (testing "variant + size combined"
    (is (= "btn btn--primary btn--lg" (button/button-classes {:variant :primary :size :lg})))
    (is (= "btn btn--danger btn--sm" (button/button-classes {:variant :danger :size :sm}))))

  (testing "nil variant falls back to default"
    (is (= "btn btn--secondary" (button/button-classes {:variant nil}))))

  (testing "nil size falls back to default (md, no size class)"
    (is (= "btn btn--secondary" (button/button-classes {:size nil}))))

  (testing "string variants work"
    (is (= "btn btn--primary" (button/button-classes {:variant "primary"})))))

(deftest button-component-test
  (testing "basic button renders correct hiccup (clj target)"
    (let [result (button/button {:variant :primary} "Click me")]
      (is (= :button (first result)))
      (is (= "btn btn--primary" (get-in result [1 :class])))
      (is (= "Click me" (nth result 2)))))

  (testing "disabled button has disabled attr"
    (let [result (button/button {:variant :primary :disabled true} "Disabled")]
      (is (true? (get-in result [1 :disabled])))))

  (testing "non-disabled button has no disabled attr"
    (let [result (button/button {:variant :primary} "Enabled")]
      (is (nil? (get-in result [1 :disabled])))))

  (testing "extra class gets appended"
    (let [result (button/button {:variant :primary :class "extra"} "Test")]
      (is (= "btn btn--primary extra" (get-in result [1 :class])))))

  (testing "extra attrs get merged"
    (let [result (button/button {:variant :primary :attrs {:id "my-btn"}} "Test")]
      (is (= "my-btn" (get-in result [1 :id])))))

  (testing "multiple children"
    (let [result (button/button {:variant :primary} "A" "B")]
      (is (= "A" (nth result 2)))
      (is (= "B" (nth result 3))))))