import {isNamedSection, MarkMark} from './types'

export class MarkMarkRenderer {
    public render(mm: MarkMark): string {
        let mmLines: string[] = ['\n']

        // Write the frontmatter
        mmLines.push(`[//]: #(markmark-syntax: ${mm.frontmatter.syntax})`)
        if ( mm.frontmatter.authorName ) mmLines.push(`[//]: #(markmark-author-name: ${mm.frontmatter.authorName})`)
        if ( mm.frontmatter.authorEmail ) mmLines.push(`[//]: #(markmark-author-email: ${mm.frontmatter.authorEmail})`)
        if ( mm.frontmatter.authorHref ) mmLines.push(`[//]: #(markmark-author-href: ${mm.frontmatter.authorHref})`)

        for ( const section of mm.sections ) {
            mmLines.push('\n')

            // if this section has a title/description, write those out
            if ( isNamedSection(section) ) {
                mmLines.push(`# ${section.title}\n`)
                if ( section.description ) {
                    mmLines.push(`${section.description}\n`)
                }
            }

            for ( const link of section.links ) {
                let linkTitle = `- ${link.title}`
                if ( link.tags.length ) {
                    linkTitle += `  ${link.tags.map(x => '#' + x).join(' ')}`
                }

                mmLines.push(linkTitle)

                for ( const url of link.urls ) {
                    mmLines.push(`    - ${url}`)
                }
            }
        }

        return mmLines.join('\n')
    }
}