import { render } from "preact-render-to-string"
import { QuartzComponent, QuartzComponentProps } from "./types"
import HeaderConstructor from "./Header"
import BodyConstructor from "./Body"
import { JSResourceToScriptElement, StaticResources } from "../resources"
import { CanonicalSlug, pathToRoot } from "../path"

interface RenderComponents {
  head: QuartzComponent
  header: QuartzComponent[]
  beforeBody: QuartzComponent[]
  pageBody: QuartzComponent
  left: QuartzComponent[]
  right: QuartzComponent[]
  footer: QuartzComponent
}

export function pageResources(
  slug: CanonicalSlug,
  staticResources: StaticResources,
): StaticResources {
  const baseDir = pathToRoot(slug)

  const contentIndexPath = baseDir + "/static/contentIndex.json"
  const contentIndexScript = `const fetchData = fetch(\`${contentIndexPath}\`).then(data => data.json())`

  return {
    css: [baseDir + "/index.css", ...staticResources.css],
    js: [
      { src: baseDir + "/prescript.js", loadTime: "beforeDOMReady", contentType: "external" },
      {
        loadTime: "beforeDOMReady",
        contentType: "inline",
        spaPreserve: true,
        script: contentIndexScript,
      },
      ...staticResources.js,
      {
        src: baseDir + "/postscript.js",
        loadTime: "afterDOMReady",
        moduleType: "module",
        contentType: "external",
      },
    ],
  }
}

export function renderPage(
  slug: CanonicalSlug,
  componentData: QuartzComponentProps,
  components: RenderComponents,
  pageResources: StaticResources,
): string {
  const {
    head: Head,
    header,
    beforeBody,
    pageBody: Content,
    left,
    right,
    footer: Footer,
  } = components
  const Header = HeaderConstructor()
  const Body = BodyConstructor()

  const LeftComponent = (
    <div class="left sidebar">
      {left.map((BodyComponent) => (
        <BodyComponent {...componentData} />
      ))}
    </div>
  )

  const RightComponent = (
    <div class="right sidebar">
      {right.map((BodyComponent) => (
        <BodyComponent {...componentData} />
      ))}
    </div>
  )

  const doc = (
    <html>
      <Head {...componentData} />
      <body data-slug={slug}>
        <div id="quartz-root" class="page">
          <Body {...componentData}>
            {LeftComponent}
            <div class="center">
              <div class="page-header">
                <Header {...componentData}>
                  {header.map((HeaderComponent) => (
                    <HeaderComponent {...componentData} />
                  ))}
                </Header>
                <div class="popover-hint">
                  {beforeBody.map((BodyComponent) => (
                    <BodyComponent {...componentData} />
                  ))}
                </div>
              </div>
              <Content {...componentData} />
            </div>
            {RightComponent}
          </Body>
          <Footer {...componentData} />
        </div>
      </body>
      {pageResources.js
        .filter((resource) => resource.loadTime === "afterDOMReady")
        .map((res) => JSResourceToScriptElement(res))}
    </html>
  )

  return "<!DOCTYPE html>\n" + render(doc)
}