145 lines
3.9 KiB
TypeScript
145 lines
3.9 KiB
TypeScript
import {
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DOCX_MIME_TYPE,
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type DocxCapability,
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type DocxExportRequestInput
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} from "@md-to-pdf/core";
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import { parseContentDispositionFileName } from "./pdf-export";
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export interface DocxExportResult {
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blob: Blob;
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fileName: string;
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warningCount: number;
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echartsErrorCount: number;
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mermaidErrorCount: number;
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}
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export interface DesktopDocxExportResult {
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saved: boolean;
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fileName: string;
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warningCount: number;
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echartsErrorCount: number;
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mermaidErrorCount: number;
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}
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function parseNumericHeader(value: string | null) {
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if (value === null) {
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return 0;
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}
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const parsed = Number.parseInt(value, 10);
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return Number.isInteger(parsed) && parsed >= 0 ? parsed : 0;
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}
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async function readErrorMessage(response: Response) {
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try {
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const payload = (await response.json()) as {
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message?: unknown;
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};
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if (typeof payload.message === "string") {
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return payload.message;
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}
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} catch {
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// 非 JSON 错误响应使用通用提示。
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}
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return "DOCX 导出失败";
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}
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export async function getDocxCapability(
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fetcher: typeof fetch = fetch
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): Promise<DocxCapability> {
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const bridge = window.mdToPdfDesktop;
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if (bridge) {
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return bridge.getDocxCapability();
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}
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const response = await fetcher("/api/docx/capability");
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if (!response.ok) {
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throw new Error("无法检测 DOCX 导出能力");
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}
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return (await response.json()) as DocxCapability;
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}
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export async function requestDocxExport(
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request: DocxExportRequestInput,
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fetcher: typeof fetch = fetch
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): Promise<DocxExportResult> {
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const response = await fetcher("/api/docx", {
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method: "POST",
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headers: {
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"content-type": "application/json"
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},
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body: JSON.stringify(request)
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});
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if (!response.ok) {
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throw new Error(await readErrorMessage(response));
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}
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const contentType =
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response.headers.get("content-type")?.split(";")[0]?.trim();
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if (contentType !== DOCX_MIME_TYPE) {
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throw new Error("DOCX 服务返回了无效文件类型");
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}
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return {
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blob: await response.blob(),
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fileName: parseContentDispositionFileName(
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response.headers.get("content-disposition"),
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"document.docx"
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),
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warningCount: parseNumericHeader(
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response.headers.get("x-docx-warning-count")
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),
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echartsErrorCount: parseNumericHeader(
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response.headers.get("x-echarts-error-count")
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),
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mermaidErrorCount: parseNumericHeader(
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response.headers.get("x-mermaid-error-count")
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)
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};
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}
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export async function requestDesktopDocxExport(
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request: DocxExportRequestInput
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): Promise<DesktopDocxExportResult> {
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const bridge = window.mdToPdfDesktop;
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if (!bridge) {
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throw new Error("桌面 DOCX 引擎不可用");
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}
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const outcome = await bridge.exportDocx(request);
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if (!outcome.ok) {
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throw new Error(outcome.message);
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}
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return {
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saved: outcome.saved,
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fileName: outcome.fileName,
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warningCount: outcome.diagnostics.warnings.length,
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echartsErrorCount: outcome.diagnostics.echartsErrors.length,
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mermaidErrorCount: outcome.diagnostics.mermaidErrors.length
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};
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}
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export function downloadDocx(result: DocxExportResult) {
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const url = URL.createObjectURL(result.blob);
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const anchor = document.createElement("a");
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anchor.href = url;
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anchor.download = result.fileName;
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anchor.click();
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window.setTimeout(() => URL.revokeObjectURL(url), 0);
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}
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export function createDocxDiagnosticsMessage(result: {
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warningCount: number;
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echartsErrorCount: number;
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mermaidErrorCount: number;
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}) {
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const messages = [];
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if (result.warningCount > 0) {
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messages.push(`${result.warningCount} 条提示`);
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}
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if (result.echartsErrorCount > 0) {
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messages.push(`${result.echartsErrorCount} 个 ECharts 图表失败`);
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}
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if (result.mermaidErrorCount > 0) {
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messages.push(`${result.mermaidErrorCount} 个 Mermaid 图表失败`);
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}
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return messages.length > 0
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? messages.join("，")
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: "纸张、样式和可编辑结构已写入文档";
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}
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