package web

import (
	"bytes"
	"net/http"
	"os"
	"strings"
	"testing"
)

func TestAboutPageForARelease(t *testing.T) {
	code, body := get(t, About("v1.2.3"), "http://llmgw.example/about", nil)
	if code != http.StatusOK {
		t.Fatalf("status %d", code)
	}
	for _, want := range []string{
		"<!doctype html>",
		repoURL + "/releases/download/v1.2.3/llmgw-v1.2.3-linux-amd64",
		"VERSION=v1.2.3",
		"reverse_proxy",      // the Caddyfile, inline
		"proxy_read_timeout", // and nginx's
		`<a href="/">This gateway</a>`,
		"/_static/fonts/archivo-latin.woff2?v=",
	} {
		if !strings.Contains(body, want) {
			t.Errorf("the page does not have %q", want)
		}
	}
	// Served to anyone, on networks that may reach nothing: the page sends no
	// browser elsewhere for its fonts, and does not announce unreleased work
	// in a binary that already has it.
	for _, not := range []string{"fonts.googleapis.com", "next release"} {
		if strings.Contains(body, not) {
			t.Errorf("the page has %q", not)
		}
	}
}

func TestAboutPageForADevelopmentBuild(t *testing.T) {
	_, body := get(t, About("v1.2.3-4-gabcdef"), "http://llmgw.example/about", nil)
	if strings.Contains(body, "/releases/download/v1.2.3-4") || strings.Contains(body, `class="dl"`) {
		t.Error("a development build links to release files that do not exist")
	}
	if !strings.Contains(body, "development build (v1.2.3-4-gabcdef)") {
		t.Error("a development build does not say what it is")
	}
}

func TestAboutPageAsTheWebsite(t *testing.T) {
	d := NewAboutData("v1.2.3")
	d.Site, d.Date = true, "1 January 2027"
	var b bytes.Buffer
	if err := RenderAbout(&b, d); err != nil {
		t.Fatal(err)
	}
	body := b.String()
	for _, want := range []string{"fonts.googleapis.com", "Released 1 January 2027"} {
		if !strings.Contains(body, want) {
			t.Errorf("the website does not have %q", want)
		}
	}
	for _, not := range []string{"<!doctype", "</body>", "This gateway", "/_static/"} {
		if strings.Contains(body, not) {
			t.Errorf("the website has %q", not)
		}
	}
}

func TestAboutProxyConfigsMatchDeploy(t *testing.T) {
	for _, name := range []string{"Caddyfile", "nginx.conf"} {
		want, err := os.ReadFile("../../deploy/proxy/" + name)
		if err != nil {
			t.Fatal(err)
		}
		got, err := proxyConfigs.ReadFile("proxy/" + name)
		if err != nil {
			t.Fatal(err)
		}
		if !bytes.Equal(got, want) {
			t.Errorf("internal/web/proxy/%s differs from deploy/proxy/%[1]s: copy it over", name)
		}
	}
}