package html_test

import (
	"bytes"
	"code.squareroundforest.org/arpio/html"
	. "code.squareroundforest.org/arpio/html/tags"
	"testing"
)

func TestQuery(t *testing.T) {
	t.Run("group children", func(t *testing.T) {
		inlineDiv := html.Inline(Div(Attr("foo", "bar"), "baz"))
		attr := html.AllAttributes(inlineDiv)
		if len(attr) != 1 || attr["foo"] != "bar" {
			t.Fatal()
		}

		c := html.Children(inlineDiv)
		if len(c) != 1 || c[0] != "baz" {
			t.Fatal()
		}

		var b bytes.Buffer
		if err := html.Render(&b, inlineDiv); err != nil {
			t.Fatal(err)
		}

		h := b.String()
		if h != `<div foo="bar">baz</div>` {
			t.Fatal()
		}
	})

	t.Run("merge attributes", func(t *testing.T) {
		t.Run("has attributes", func(t *testing.T) {
			div := Div(Attr("foo", "bar"))
			attr := html.AllAttributes(div)
			if len(attr) != 1 || attr["foo"] != "bar" {
				t.Fatal()
			}
		})

		t.Run("no attributes", func(t *testing.T) {
			div := Div()
			attr := html.AllAttributes(div)
			if len(attr) != 0 {
				t.Fatal()
			}
		})
	})

	t.Run("find attributes", func(t *testing.T) {
		t.Run("exists", func(t *testing.T) {
			div := Div(Attr("foo", "bar"))
			if html.Attribute(div, "foo") != "bar" {
				t.Fatal()
			}
		})

		t.Run("does not exist", func(t *testing.T) {
			div := Div(Attr("foo", "bar"))
			if html.Attribute(div, "qux") != nil {
				t.Fatal()
			}
		})
	})

	t.Run("handle query", func(t *testing.T) {
		t.Run("no chlidren", func(t *testing.T) {
			div := Div()
			div2 := div()
			if html.Name(div2) != "div" || !html.Eq(div, div2) {
				t.Fatal(html.Name(div2))
			}
		})

		t.Run("name", func(t *testing.T) {
			div := Div()
			if html.Name(div) != "div" {
				t.Fatal()
			}
		})

		t.Run("all attributes", func(t *testing.T) {
			div := Div(Attr("foo", "bar", "baz", "qux"))
			attr := html.AllAttributes(div)
			if len(attr) != 2 || attr["foo"] != "bar" || attr["baz"] != "qux" {
				t.Fatal()
			}
		})

		t.Run("one attribute", func(t *testing.T) {
			div := Div(Attr("foo", "bar", "baz", "qux"))
			foo := html.Attribute(div, "foo")
			if foo != "bar" {
				t.Fatal()
			}
		})

		t.Run("children", func(t *testing.T) {
			div := Div("foo", "bar", "baz")
			c := html.Children(div)
			if len(c) != 3 || c[0] != "foo" || c[1] != "bar" || c[2] != "baz" {
				t.Fatal()
			}
		})

		t.Run("render guides", func(t *testing.T) {
			div := Div(Span("foo"))

			var b bytes.Buffer
			if err := html.RenderIndent(&b, html.Indentation{Indent: "\t"}, div); err != nil {
				t.Fatal(err)
			}

			if b.String() != "<div>\n\t<span>foo</span>\n</div>" {
				t.Fatal(b.String())
			}
		})

		t.Run("validate and render", func(t *testing.T) {
			t.Run("valid", func(t *testing.T) {
				script := Script(`function() { return "Hello, world!" }`)

				var b bytes.Buffer
				if err := html.Render(&b, script); err != nil {
					t.Fatal(err)
				}
			})

			t.Run("invalid", func(t *testing.T) {
				div := Div(Attr("foo+", "bar"))

				var b bytes.Buffer
				if err := html.Render(&b, div); err == nil {
					t.Fatal()
				}
			})

			t.Run("invalid child", func(t *testing.T) {
				div := Div(Div(Attr("foo+", "bar")))

				var b bytes.Buffer
				if err := html.Render(&b, div); err == nil {
					t.Fatal()
				}
			})
		})
	})
}