import { StaticResources } from "../../resources"
import { EmitCallback, QuartzEmitterPlugin } from "../types"
import { ProcessedContent } from "../vfile"
import { render } from "preact-render-to-string"
import { GlobalConfiguration } from "../../cfg"
import { QuartzComponent } from "../../components/types"
import { resolveToRoot } from "../../path"
import Header from "../../components/Header"
import { QuartzComponentProps } from "../../components/types"
import Body from "../../components/Body"

interface Options {
  head: QuartzComponent
  header: QuartzComponent[],
  body: QuartzComponent[]
}

export class ContentPage extends QuartzEmitterPlugin {
  name = "ContentPage"
  opts: Options

  constructor(opts: Options) {
    super()
    this.opts = opts
  }

  getQuartzComponents(): QuartzComponent[] {
    return [this.opts.head, Header, ...this.opts.header, ...this.opts.body]
  }

  async emit(cfg: GlobalConfiguration, content: ProcessedContent[], resources: StaticResources, emit: EmitCallback): Promise<string[]> {
    const fps: string[] = []

    const { head: Head, header, body } = this.opts
    for (const [tree, file] of content) {
      const baseDir = resolveToRoot(file.data.slug!)
      const pageResources: StaticResources = {
        css: [baseDir + "/index.css", ...resources.css],
        js: [
          { src: baseDir + "/prescript.js", loadTime: "beforeDOMReady" },
          ...resources.js,
          { src: baseDir + "/postscript.js", loadTime: "afterDOMReady", type: 'module' }
        ]
      }

      const componentData: QuartzComponentProps = {
        fileData: file.data,
        externalResources: pageResources,
        cfg,
        children: [],
        tree
      }

      const doc = <html>
        <Head {...componentData} />
        <body>
          <div id="quartz-root" class="page">
            <Header {...componentData} >
              {header.map(HeaderComponent => <HeaderComponent {...componentData} position="header" />)}
            </Header>
            <Body {...componentData}>
              {body.map(BodyComponent => <BodyComponent {...componentData } position="body" />)}
            </Body>
          </div>
        </body>
        {pageResources.js.filter(resource => resource.loadTime === "afterDOMReady").map(resource => <script key={resource.src} {...resource} />)}
      </html>

      const fp = file.data.slug + ".html"
      await emit({
        content: "<!DOCTYPE html>\n" + render(doc),
        slug: file.data.slug!,
        ext: ".html",
      })

      fps.push(fp)
    }
    return fps
  }
}