import { IMenu, IPage, ITag, PageCardDto, Pic, Token } from "@/types"
import { asItem } from "./lib"
import { StrapiComponentEmbed, StrapiComponent, StrapiHome, StrapiPage, StrapiPageCard, StrapiTag, StrapiMedia, StrapiMenu } from "./types"
import { typograf, markdownToHtml } from "src/lib/text"
import { encodeImageToBlurhash } from "./image"

const md = (text: string) => typograf(markdownToHtml(text))

export function createPageUrls(pages: StrapiPage[]) {
    return {
        items: pages.map(page => page.slug),
    }
}

export function isYoutubeUrl(url: string): boolean {
    return /youtube\.com/.test(url)
}

export function createEmbed(component: StrapiComponentEmbed): Token {
    if (isYoutubeUrl(component.src)) {
        return {
            token: "youtube",
            data: {
                url: component.src,
            },
        }
    }

    return {
        token: "html",
        data: `<iframe src="${component.src}" width="100%" height="480" frameborder="0"></iframe>`,
    }
}

export async function createPageToken(component: StrapiComponent): Promise<Token> {
    switch (component.__component) {
    case "hudozka.text": {
        return {
            token: "html",
            data: md(component.text),
        }
    }

    case "hudozka.image": {
        const data = await createPicFromMedia(component.media, {
            alternativeText: component.caption,
            caption: component.caption,
        })

        return {
            token: "image",
            wide: component.wide,
            data,
        }
    }

    case "hudozka.document": {
        return {
            token: "file",
            data: {
                url: component.media.url,
                slug: "jopa",
                image_url: component.media.url,
                file_url: component.media.url,
                title: component.title,
                file_size: component.media.size * 1000,
                // file_size: component.media.size,
                file_format: component.media.mime,
            },
        }
    }

    case "hudozka.embed": {
        return createEmbed(component)
    }

    case "hudozka.card-grid": {
        const items = await Promise.all(component.items
            .filter(Boolean)
            .map(createCardGrid)
        )
        return {
            token: "grid",
            data: {
                items,
            },
        }
    }

    default:
        return {
            token: "text",
            data: ` ${JSON.stringify(component)}`,
        }
    }
}

export function createMenu(res: StrapiMenu): IMenu[] {
    const items: IMenu[] = res.menu.items.map(x => ({
        href: x.page.slug,
        name: x.page.title,
    }))

    return [{
        href: "/",
        name: res.homeLabel,
    }, ...items]
}

export async function createPage(res: StrapiPage | StrapiPage[]): Promise<IPage | null> {
    const item = asItem(res)
    if (!item) {
        return null
    }

    const cover = await getCoverImage(item.cover)
    const tags: ITag[] = item.tags.map(tag => ({
        id: tag.id,
        name: tag.name,
        slug: tag.slug,
        href: `/tags/${tag.slug}`,
        count: 0,
    }))

    const tokens = await Promise.all(item.content.map(createPageToken))

    return {
        title: item.title,
        description: item.excerpt,
        id: `${item.id}`,
        url: item.slug,

        data: "",
        date: "",
        cover,
        tokens: [
            {
                token: "html",
                data: md(`# ${item.title}`),
            },

            ...tokens.filter(Boolean),
        ],
        tags,
        // breadcrumb?: [],
        featured: false,
    }
}

function isCardFeatured(card: StrapiPageCard): boolean {
    return card.layout === "big" || card.layout === "medium"
}

export async function getCoverImage(media?: StrapiMedia): Promise<Pic> {
    if (media) {
        return createPicFromMedia(media)
    }

    return {
        src: "https://hudozkacdn.tmshv.com/main_fad9fdf29a.jpg",
        width: 1920,
        height: 1858,
        // alt: '',
        // caption: '',
        // blur: '',
    }
}

async function createPicFromMedia(media: StrapiMedia, overrides?: Partial<StrapiMedia>): Promise<Pic> {
    const src = media.formats?.large?.url ?? media.url
    const pic: Pic = {
        src,
        width: media.width,
        height: media.height,
    }

    const alt = overrides?.alternativeText ?? media.alternativeText ?? undefined
    if (alt) {
        pic.alt = alt
    }

    const caption = overrides?.caption ?? media.caption ?? undefined
    if (caption) {
        pic.caption = caption
    }

    const thumb = media.formats?.thumbnail?.url ?? media.url
    const blur = await encodeImageToBlurhash(thumb)
    if (blur) {
        pic.blur = blur
    }

    return pic
}

export async function createCardGrid(card: StrapiPageCard): Promise<PageCardDto> {
    const cover = await getCoverImage(card.page.cover)

    return {
        id: card.id,
        url: card.page.slug,
        title: card.page.title,
        featured: isCardFeatured(card),
        date: card.page.date,
        cover,
    }
}

export async function createHomeCards(data: StrapiHome): Promise<PageCardDto[]> {
    const items = await Promise.all(data.cards
        .map(createCardGrid)
    )
    return items
        .filter(x => !!x.url)
}