package export

import (
	"strings"
	"testing"
)

func TestPrimaryFamily(t *testing.T) {
	cases := map[string]string{
		"Awke":                                 "Awke",
		"Untitled Sans":                        "Untitled Sans",
		"Inter, system-ui, sans-serif":         "Inter",
		`"Untitled Sans", sans-serif`:          "Untitled Sans",
		"'Maple Mono', ui-monospace":           "Maple Mono",
		"  Spaced  ,  x":                       "Spaced",
		"":                                     "",
		"system-ui":                            "", // generic-only → nothing to embed
		"Georgia, serif":                       "Georgia",
	}
	for in, want := range cases {
		if got := primaryFamily(in); got != want {
			t.Errorf("primaryFamily(%q) = %q, want %q", in, got, want)
		}
	}
}

func TestWeightAndItalicOf(t *testing.T) {
	cases := []struct {
		sub    string
		weight int
		italic bool
	}{
		{"Regular", 400, false},
		{"Bold", 700, false},
		{"Italic", 400, true},
		{"Bold Italic", 700, true},
		{"Thin", 100, false},
		{"Light", 300, false},
		{"Medium", 500, false},
		{"SemiBold", 600, false},
		{"Black", 900, false},
		{"Bold Oblique", 700, true},
	}
	for _, c := range cases {
		if w := weightOf(c.sub); w != c.weight {
			t.Errorf("weightOf(%q) = %d, want %d", c.sub, w, c.weight)
		}
		if it := italicOf(c.sub); it != c.italic {
			t.Errorf("italicOf(%q) = %v, want %v", c.sub, it, c.italic)
		}
	}
}

func TestFontFaceCSS(t *testing.T) {
	f := fontFace{family: "Untitled Sans", weight: 700, italic: true, ext: ".otf", data: []byte("FAKE")}
	css := f.faceCSS()
	for _, want := range []string{
		`font-family:"Untitled Sans"`,
		"font-weight:700",
		"font-style:italic",
		`format("opentype")`,
		"data:font/otf;base64,RkFLRQ==", // base64("FAKE")
	} {
		if !strings.Contains(css, want) {
			t.Errorf("@font-face missing %q:\n%s", want, css)
		}
	}
}

func TestFontFaceCSSTruetype(t *testing.T) {
	f := fontFace{family: "Maple Mono", weight: 400, italic: false, ext: ".ttf", data: []byte("x")}
	css := f.faceCSS()
	if !strings.Contains(css, `format("truetype")`) {
		t.Errorf("ttf should be truetype format:\n%s", css)
	}
	if !strings.Contains(css, "data:font/ttf;base64,") {
		t.Errorf("ttf mime wrong:\n%s", css)
	}
}