import type { DebugPublishMeta } from '../../utils/debugPublish';
import { inferGradeFromAge } from '../../utils/debugPublish';
import {
    PAPER_SHEET_WORKSHEET_DEFINITIONS,
    PAPER_SHEET_WORKSHEET_ID,
    PAPER_TYPES,
    type PaperType,
} from '../../config/worksheets/papers';

export { PAPER_SHEET_WORKSHEET_ID, type PaperType };
export const PAPER_TYPE_OPTIONS = PAPER_TYPES;

const WORKSHEET_BY_ID = new Map(
    PAPER_SHEET_WORKSHEET_DEFINITIONS.map((entry) => [entry.id, entry]),
);

/** 只接收已注册条目；旧综合入口继续支持 type，并兼容分享中的 mode。 */
export function resolvePaperEntry(options: {
    id?: string;
    type?: string;
    mode?: string;
}) {
    const id = options.id || PAPER_SHEET_WORKSHEET_ID;
    const entry = WORKSHEET_BY_ID.get(id);
    if (!entry) throw new Error('当前作业纸暂不可用，请更新小程序');
    const legacyType = options.type || options.mode;
    const paperType =
        entry.renderConfig.paperType ||
        (legacyType && isValidPaperType(legacyType)
            ? legacyType
            : DEFAULT_PAPER_TYPE);
    return { entry, paperType };
}

export function getWorksheetIdForPaperType(paperType: PaperType): string {
    return PAPER_SHEET_WORKSHEET_DEFINITIONS.find(
        (entry) => entry.renderConfig.paperType === paperType,
    )!.id;
}

export interface PaperColorOption {
    id: string;
    name: string;
    /** 主线条颜色 */
    value: string;
}

/** 颜色选项：浅红、浅绿、黑色 */
export const PAPER_COLOR_OPTIONS: PaperColorOption[] = [
    { id: 'red', name: '浅红', value: '#E48A8A' },
    { id: 'green', name: '浅绿', value: '#7FB069' },
    { id: 'black', name: '黑色', value: '#333333' },
];

export const DEFAULT_PAPER_TYPE: PaperType = 'tian';
export const DEFAULT_PAPER_COLOR = PAPER_COLOR_OPTIONS[0].value;

export function getPaperTypeName(id: string): string {
    return PAPER_TYPE_OPTIONS.find((p) => p.id === id)?.name || '作业纸';
}

export function isValidPaperType(id: string): id is PaperType {
    return PAPER_TYPE_OPTIONS.some((p) => p.id === id);
}

export function getModeInfo(id: string) {
    const m = WORKSHEET_BY_ID.get(id);
    return m ? { title: m.title, desc: m.subtitle } : undefined;
}

export function isValidMode(id: string): boolean {
    return WORKSHEET_BY_ID.has(id);
}

export function getPublishMetaByMode(id: string): DebugPublishMeta | null {
    const m = WORKSHEET_BY_ID.get(id);
    if (!m) return null;
    return {
        id: m.id,
        title: m.title,
        subtitle: m.subtitle,
        category: 'papers',
        subcategory: 'paper-sheet',
        path: `/papersPages/paperSheet/paperSheet?id=${m.id}`,
        ageMin: m.ageMin,
        ageMax: m.ageMax,
        grade: inferGradeFromAge(m.ageMin, m.ageMax),
        difficulty: m.difficulty,
        previewImg: '',
        tags: [...m.tags],
        isNew: true,
        isHot: false,
        sortOrder: m.sortOrder,
        status: 'draft',
    };
}