import van, { State, Val } from 'vanjs-core'
import { VideoParseResult, VideoInfoCardMode } from '../type'
import { secondToTime } from '../mixin'
import { VanComponent } from '../../mixin'
import VideoItemList from './videoItemList'
import { WorkRoute } from '..'

const { a, div, img } = van.tags

class VideoInfoCardComp implements VanComponent {
    element: HTMLElement

    constructor(
        public workRoute: WorkRoute,
    ) {
        const {
            videoInfoCardData: data,
            videoInfoCardMode: mode,
            ownerFaceHide
        } = workRoute

        this.element = div({ class: 'card border-2 shadow-sm' },
            div({ class: 'card-header' },
                a({
                    class: 'link-dark text-decoration-none fw-bold focus-ring', href: () => data.val.targetURL,
                    target: '_blank',
                },
                    () => data.val.title,
                )
            ),
            div({ class: 'card-body vstack gap-4' },
                div({ class: 'vstack gap-3' },
                    div({ class: 'row gx-3 gy-3' },
                        // 封面
                        div({
                            class: () => mode.val == 'video'
                                ? 'col-md-5 col-xl-4'
                                : 'col-8 col-sm-6 mx-auto col-md-5 col-lg-3 col-xl-2'
                        },
                            div({ class: 'position-relative shadow-sm rounded overflow-hidden' },
                                a({
                                    href: () => data.val.targetURL,
                                    title: () => `打开视频播放页面`,
                                    target: '_blank',
                                },
                                    img({
                                        src: () => data.val.cover,
                                        class: 'w-100',
                                        ondragstart: event => event.preventDefault(),
                                        referrerPolicy: 'no-referrer',
                                    })
                                ),
                                a({
                                    href: () => `https://space.bilibili.com/${data.val.owner.mid}`,
                                    title: () => `查看用户主页：${data.val.owner.name}`,
                                    target: '_blank',
                                    tabIndex: () => mode.val == 'video' ? 0 : -1,
                                },
                                    img({
                                        src: () => data.val.owner.face,
                                        hidden: ownerFaceHide,
                                        referrerPolicy: 'no-referrer',
                                        ondragstart: event => event.preventDefault(),
                                        style: `right: 1rem; bottom: 1rem;`,
                                        class: 'rounded-3 border shadow position-absolute w-25'
                                    })
                                ),
                            ),
                        ),
                        // 字段信息
                        div({
                            class: () => mode.val == 'video'
                                ? 'col-md-7 col-xl-8 vstack gap-2'
                                : 'col-md-7 col-lg-9 col-xl-10 vstack gap-2'
                        },
                            div({ class: 'position-relative h-100' },
                                div({ class: 'position-absolute top-0 bottom-0 position-relative-sm-down' },
                                    Right(this)
                                )
                            ),
                        ),
                    ),
                    DescriptionGroup(this, true),
                ),
                VideoItemList(workRoute)
            )
        )
    }
}

const Right = (parent: VideoInfoCardComp) => {
    const mode = parent.workRoute.videoInfoCardMode
    const data = parent.workRoute.videoInfoCardData

    return div({ class: 'vstack gap-2 h-100' },
        div({ class: 'row gx-2 gy-2' },
            div({ class: 'col-xl-7 col-xxl-8' },
                InputGroup(
                    van.derive(() => mode.val == 'video'
                        ? (data.val.staff.length > 0 ? '制作信息' : '发布者')
                        : '参演人员'),
                    van.derive(() => {
                        if (data.val.staff.length > 0)
                            return data.val.staff.map(i => i.trim()).join(', ')
                        return data.val.owner.name
                    }), { disabled: true }
                ),
            ),
            div({ class: 'col-xl-5 col-xxl-4' },
                InputGroup('发布时间',
                    van.derive(() => data.val.publishData), { disabled: true }
                )
            ),
            div({ class: 'col-sm col-md-12 col-lg-4', hidden: () => mode.val != 'video' },
                InputGroup('分辨率',
                    van.derive(() => `${data.val.dimension.width}x${data.val.dimension.height}`),
                    { disabled: true }
                )
            ),
            div({ class: 'col col-lg-4', hidden: () => mode.val != 'video' },
                InputGroup('时长',
                    van.derive(() => `${secondToTime(data.val.duration)}`),
                    { disabled: true }
                )
            ),
            div({ class: 'col col-lg-4', hidden: () => mode.val != 'video' },
                InputGroup('集数',
                    van.derive(() => data.val.pages.length.toString()),
                    { disabled: true }
                )
            ),
            div({ class: 'col-md-12 col-lg-4', hidden: () => mode.val != 'season' },
                InputGroup('状态',
                    van.derive(() => data.val.status),
                    { disabled: true }
                )
            ),
            div({ class: 'col-sm col-lg-4', hidden: () => mode.val != 'season' },
                InputGroup('地区',
                    van.derive(() => data.val.areas.map(i => i.trim()).join(', ')),
                    { disabled: true }
                )
            ),
            div({ class: 'col-sm col-lg-4', hidden: () => mode.val != 'season' },
                InputGroup('标签',
                    van.derive(() => data.val.styles.join(', ')),
                    { disabled: true }
                )
            ),
        ),
        DescriptionGroup(parent),
    )
}

/** 用于显示 `description` 字段的 `.input-group`
 * 
 * @param parent 父组件
 * @param bottom 是否在底部
 */
const DescriptionGroup = (parent: VideoInfoCardComp, bottom = false) => {
    const mode = parent.workRoute.videoInfoCardMode
    const data = parent.workRoute.videoInfoCardData
    const _class = van.derive(() => mode.val == 'video' ? 'd-md-flex' : '')
    const size = van.derive(() => mode.val == 'video' ? 'lg' : 'lg')
    return div({
        class: () => `shadow-sm input-group input-group-sm ${bottom
            ? `d-none d-lg-none ${_class.val}`
            : `overflow-hidden flex-fill ${mode.val == 'video' ? 'd-md-none d-lg-flex ' : ''}`
            }`,
    },
        div({ class: 'input-group-text align-items-start' }, '描述'),
        () => {
            const lines = (data.val.description.match(/^(\s*|.)$/) ? '暂无描述' : data.val.description).split('\n')
            return div({ class: `form-control overflow-auto ${bottom ? `max-height-description` : `h-100`}` },
                lines.map(line => div(line))
            )
        }
    )
}

const InputGroup = (title: Val<string>, value: State<string>, option?: {
    disabled?: Val<boolean>
    elementType?: 'input' | 'textarea'
}) => {
    return div({ class: 'input-group input-group-sm shadow-sm rounded' },
        div({ class: 'input-group-text' }, title),
        van.tags[option?.elementType || 'input']({
            class: 'form-control bg-white',
            disabled: option?.disabled || false,
            style: 'cursor: text;',
            value
        })
    )
}

export default (
    workRoute: WorkRoute
) => new VideoInfoCardComp(workRoute).element