core: support ContentNode[] format

packages/hydrooj/src/lib/content.ts

@@ -0,0 +1,74 @@
+import { ContentNode } from '../interface';
+
+export interface ProblemSource {
+    description?: string,
+    input?: string,
+    output?: string,
+    samples?: [string, string][],
+    hint?: string,
+    source?: string,
+}
+
+export function buildContent(source: ProblemSource | ContentNode[], type: 'markdown' | 'html' = 'markdown', translate?: Function) {
+    const _ = translate || ((s: string) => s);
+    if (source instanceof Array) {
+        return type === 'html'
+            ? source.map((node) => [
+                node.type !== 'Plain' ? `<h2>${node.sectionTitle}</h2>` : '',
+                node.type === 'Sample'
+                    ? `<h2>${_('Sample Input')}<h2><pre>${node.payload[0]}</pre><h2>${_('Sample Output')}</h2><pre>${node.payload[1]}</pre>`
+                    : '',
+                node.text,
+            ].join('\n')).join('\n')
+            : source.map((node) => [
+                node.type !== 'Plain' ? `## ${node.sectionTitle}` : '',
+                ...node.type === 'Sample'
+                    ? [
+                        `## ${_('Sample Input')}`,
+                        '```',
+                        node.payload[0],
+                        '```',
+                        `## ${_('Sample Output')}`,
+                        '```',
+                        node.payload[1],
+                        '```',
+                    ]
+                    : [],
+                node.text,
+            ].join('\n')).join('\n');
+    }
+    return type === 'html'
+        ? [
+            ...source.description ? [`<h2>${_('Description')}</h2>`, source.description] : [],
+            ...source.input ? [`<h2>${_('Input Format')}</h2>`, source.input] : [],
+            ...source.output ? [`<h2>'${_('Output Format')}</h2>`, source.output] : [],
+            ...(source.samples).map((sample, i) => [
+                `<h2>${_('Sample Input')} ${i + 1}</h2><pre>`,
+                sample[0],
+                `</pre><h2>${_('Sample Output')} ${i + 1}</h2><pre>`,
+                sample[1],
+                '</pre>',
+            ].join('\n')),
+            ...source.hint ? [`<h2>${_('Hint')}</h2>`, source.hint] : [],
+            ...source.source ? [`<h2>${_('Source')}</h2>`, source.source] : [],
+        ].join('\n')
+        : [
+            ...source.description ? [`## ${_('Description')}`, source.description] : [],
+            ...source.input ? [`## ${_('Input Format')}`, source.input] : [],
+            ...source.output ? [`## '${_('Output Format')}`, source.output] : [],
+            ...(source.samples).map((sample, i) => [
+                `## ${_('Sample Input')} ${i + 1}`,
+                '```',
+                sample[0],
+                '```',
+                `## ${_('Sample Output')} ${i + 1}`,
+                '```',
+                sample[1],
+                '```',
+            ].join('\n')),
+            ...source.hint ? [`## ${_('Hint')}`, source.hint] : [],
+            ...source.source ? [`## ${_('Source')}`, source.source] : [],
+        ].join('\n');
+}
+
+global.Hydro.lib.buildContent = buildContent;