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| 1 | +/** |
| 2 | + * Bilibili summary — fetches the official AI-generated video summary (the "AI总结" |
| 3 | + * shown on the video page) via /x/web-interface/view/conclusion/get. |
| 4 | + */ |
| 5 | +import { cli, Strategy } from '@jackwener/opencli/registry'; |
| 6 | +import { ArgumentError, AuthRequiredError, CommandExecutionError, EmptyResultError } from '@jackwener/opencli/errors'; |
| 7 | +import { apiGet, resolveBvid } from './utils.js'; |
| 8 | + |
| 9 | +const BILIBILI_HOST_RE = /(^|\.)bilibili\.com$/i; |
| 10 | +const B23_HOST_RE = /(^|\.)b23\.tv$/i; |
| 11 | +const BVID_RE = /^BV[A-Za-z0-9]+$/; |
| 12 | + |
| 13 | +function formatTime(seconds) { |
| 14 | + const s = Math.max(0, Math.floor(Number(seconds) || 0)); |
| 15 | + const h = Math.floor(s / 3600); |
| 16 | + const m = Math.floor((s % 3600) / 60); |
| 17 | + const sec = s % 60; |
| 18 | + const pad = (n) => String(n).padStart(2, '0'); |
| 19 | + return h > 0 ? `${h}:${pad(m)}:${pad(sec)}` : `${pad(m)}:${pad(sec)}`; |
| 20 | +} |
| 21 | + |
| 22 | +async function readBvid(raw) { |
| 23 | + const input = String(raw ?? '').trim(); |
| 24 | + if (!input) { |
| 25 | + throw new ArgumentError('bilibili summary bvid cannot be empty', 'Pass a BV ID, Bilibili video URL, or b23.tv short link.'); |
| 26 | + } |
| 27 | + if (BVID_RE.test(input)) { |
| 28 | + return input; |
| 29 | + } |
| 30 | + let parsed = null; |
| 31 | + try { |
| 32 | + parsed = new URL(input); |
| 33 | + } catch { |
| 34 | + // Bare b23.tv short codes are accepted by the shared resolver. |
| 35 | + } |
| 36 | + if (parsed) { |
| 37 | + if (parsed.protocol !== 'https:' && parsed.protocol !== 'http:') { |
| 38 | + throw new ArgumentError('Bilibili summary URL must use http or https'); |
| 39 | + } |
| 40 | + if (BILIBILI_HOST_RE.test(parsed.hostname)) { |
| 41 | + const match = parsed.pathname.match(/\/(?:video|bangumi\/play)\/(BV[A-Za-z0-9]+)/i); |
| 42 | + if (!match) { |
| 43 | + throw new ArgumentError('Bilibili summary URL must contain a BV video id'); |
| 44 | + } |
| 45 | + return match[1]; |
| 46 | + } |
| 47 | + if (!B23_HOST_RE.test(parsed.hostname)) { |
| 48 | + throw new ArgumentError('Bilibili summary URL must be a bilibili.com or b23.tv URL'); |
| 49 | + } |
| 50 | + } |
| 51 | + try { |
| 52 | + return await resolveBvid(input); |
| 53 | + } catch (error) { |
| 54 | + throw new ArgumentError(`Cannot resolve Bilibili BV ID from input: ${input}`, error instanceof Error ? error.message : String(error)); |
| 55 | + } |
| 56 | +} |
| 57 | + |
| 58 | +function requireOkPayload(payload, label) { |
| 59 | + if (!payload || typeof payload !== 'object' || Array.isArray(payload)) { |
| 60 | + throw new CommandExecutionError(`Bilibili ${label} API returned a malformed payload`); |
| 61 | + } |
| 62 | + if (payload.code !== 0) { |
| 63 | + const message = payload.message ?? 'unknown error'; |
| 64 | + if (payload.code === -101 || payload.code === -403 || /登录|权限|forbidden|permission|login/i.test(String(message))) { |
| 65 | + throw new AuthRequiredError('bilibili.com', `Bilibili ${label} API requires login or permission: ${message} (${payload.code})`); |
| 66 | + } |
| 67 | + throw new CommandExecutionError(`Bilibili ${label} API failed: ${message} (${payload.code})`); |
| 68 | + } |
| 69 | + return payload.data; |
| 70 | +} |
| 71 | + |
| 72 | +function readModelResult(data, bvid) { |
| 73 | + if (!data || typeof data !== 'object' || Array.isArray(data)) { |
| 74 | + throw new CommandExecutionError('Bilibili conclusion API returned malformed data'); |
| 75 | + } |
| 76 | + if (data.code !== 0) { |
| 77 | + throw new EmptyResultError('bilibili summary', `Bilibili has not generated an AI summary for ${bvid}.`); |
| 78 | + } |
| 79 | + let modelResult = data.model_result; |
| 80 | + if (typeof modelResult === 'string') { |
| 81 | + try { |
| 82 | + modelResult = JSON.parse(modelResult); |
| 83 | + } catch { |
| 84 | + throw new CommandExecutionError('Bilibili conclusion API returned malformed model_result JSON'); |
| 85 | + } |
| 86 | + } |
| 87 | + if (!modelResult || typeof modelResult !== 'object' || Array.isArray(modelResult)) { |
| 88 | + throw new CommandExecutionError('Bilibili conclusion API returned malformed model_result'); |
| 89 | + } |
| 90 | + const summary = String(modelResult.summary ?? '').trim(); |
| 91 | + if (!summary) { |
| 92 | + throw new EmptyResultError('bilibili summary', `Bilibili has not generated an AI summary for ${bvid}.`); |
| 93 | + } |
| 94 | + const outline = modelResult.outline ?? []; |
| 95 | + if (!Array.isArray(outline)) { |
| 96 | + throw new CommandExecutionError('Bilibili conclusion API returned malformed outline'); |
| 97 | + } |
| 98 | + return { summary, outline }; |
| 99 | +} |
| 100 | + |
| 101 | +function rowsFromModel(model) { |
| 102 | + const rows = [{ time: '', content: model.summary }]; |
| 103 | + for (const section of model.outline) { |
| 104 | + if (!section || typeof section !== 'object' || Array.isArray(section)) { |
| 105 | + throw new CommandExecutionError('Bilibili conclusion API returned malformed outline section'); |
| 106 | + } |
| 107 | + const sectionTitle = String(section.title ?? '').trim(); |
| 108 | + const sectionTime = formatTime(section.timestamp); |
| 109 | + if (sectionTitle) { |
| 110 | + rows.push({ time: sectionTime, content: `# ${sectionTitle}` }); |
| 111 | + } |
| 112 | + const points = section.part_outline ?? []; |
| 113 | + if (!Array.isArray(points)) { |
| 114 | + throw new CommandExecutionError('Bilibili conclusion API returned malformed part outline'); |
| 115 | + } |
| 116 | + for (const point of points) { |
| 117 | + if (!point || typeof point !== 'object' || Array.isArray(point)) { |
| 118 | + throw new CommandExecutionError('Bilibili conclusion API returned malformed outline point'); |
| 119 | + } |
| 120 | + const content = String(point.content ?? '').trim(); |
| 121 | + if (content) { |
| 122 | + rows.push({ time: formatTime(point.timestamp), content }); |
| 123 | + } |
| 124 | + } |
| 125 | + } |
| 126 | + return rows; |
| 127 | +} |
| 128 | + |
| 129 | +var command = cli({ |
| 130 | + site: 'bilibili', |
| 131 | + name: 'summary', |
| 132 | + access: 'read', |
| 133 | + description: '获取 B站视频的官方 AI 总结（视频页「AI总结」同款，含分段大纲与时间戳）', |
| 134 | + domain: 'www.bilibili.com', |
| 135 | + strategy: Strategy.COOKIE, |
| 136 | + args: [ |
| 137 | + { name: 'bvid', required: true, positional: true, help: 'Video BV ID / URL / b23.tv short link' }, |
| 138 | + ], |
| 139 | + columns: ['time', 'content'], |
| 140 | + func: async (page, kwargs) => { |
| 141 | + if (!page) { |
| 142 | + throw new CommandExecutionError('Browser session required for bilibili summary'); |
| 143 | + } |
| 144 | + const bvid = await readBvid(kwargs.bvid); |
| 145 | + const view = await apiGet(page, '/x/web-interface/view', { params: { bvid } }); |
| 146 | + const viewData = requireOkPayload(view, 'view'); |
| 147 | + const cid = viewData?.cid; |
| 148 | + const upMid = viewData?.owner?.mid; |
| 149 | + if (!cid || !upMid) { |
| 150 | + throw new CommandExecutionError(`Bilibili view API did not return cid/up_mid for ${bvid}`); |
| 151 | + } |
| 152 | + const conclusion = await apiGet(page, '/x/web-interface/view/conclusion/get', { |
| 153 | + params: { bvid, cid, up_mid: upMid }, |
| 154 | + signed: true, |
| 155 | + }); |
| 156 | + const conclusionData = requireOkPayload(conclusion, 'conclusion'); |
| 157 | + return rowsFromModel(readModelResult(conclusionData, bvid)); |
| 158 | + }, |
| 159 | +}); |
| 160 | + |
| 161 | +export const __test__ = { |
| 162 | + command, |
| 163 | + formatTime, |
| 164 | + readBvid, |
| 165 | + readModelResult, |
| 166 | + rowsFromModel, |
| 167 | +}; |
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