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

type PaperSheetWorksheetRow =
    (typeof PAPER_SHEET_WORKSHEET_DEFINITIONS)[number];

const WORKSHEET_BY_ID = Object.fromEntries(
    PAPER_SHEET_WORKSHEET_DEFINITIONS.map((m) => [m.id, m]),
) as Record<string, PaperSheetWorksheetRow>;

export const PAPER_SHEET_WORKSHEET_ID = PAPER_SHEET_WORKSHEET_DEFINITIONS[0].id;

/** 纸张类型 id */
export type PaperType =
    | 'tian'
    | 'mi'
    | 'square'
    | 'four-line'
    | 'letter'
    | 'horizontal'
    | 'vertical'
    | 'dictation-hanzi'
    | 'dictation-pinyin'
    | 'homework-log';

export interface PaperTypeOption {
    id: PaperType;
    name: string;
    /** 次要说明 */
    desc: string;
}

/** 纸张类型选项（展示顺序与用户需求一致） */
export const PAPER_TYPE_OPTIONS: PaperTypeOption[] = [
    { id: 'tian', name: '田字格', desc: '汉字练习' },
    { id: 'mi', name: '米字格', desc: '书法练习' },
    { id: 'square', name: '方格', desc: '书法练字纸' },
    { id: 'four-line', name: '四线三格', desc: '拼音 / 字母' },
    { id: 'letter', name: '信纸', desc: '横线信笺' },
    { id: 'horizontal', name: '横线', desc: '横线本' },
    { id: 'vertical', name: '竖线', desc: '竖排书写' },
    { id: 'dictation-hanzi', name: '汉字听写', desc: '田字格 + 订正栏' },
    {
        id: 'dictation-pinyin',
        name: '拼音/英语听写',
        desc: '四线三格 + 订正栏',
    },
    { id: 'homework-log', name: '作业登记表', desc: '分科登记' },
];

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[id];
    return m ? { title: m.title, desc: m.subtitle } : undefined;
}

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

export function getPublishMetaByMode(id: string): DebugPublishMeta | null {
    const m = WORKSHEET_BY_ID[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',
    };
}