From b33f13ccaf4ec14a94ee0ee467dda04cf4981d00 Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Mon, 01 Jan 2024 22:20:34 +0000
Subject: [PATCH] fix: dont show last page if folder

---
 quartz/build.ts |  252 ++++++++++++++++++++++++++++---------------------
 1 files changed, 144 insertions(+), 108 deletions(-)

diff --git a/quartz/build.ts b/quartz/build.ts
index e5bfcaa..24f0498 100644
--- a/quartz/build.ts
+++ b/quartz/build.ts
@@ -1,30 +1,30 @@
-import "source-map-support/register.js"
+import sourceMapSupport from "source-map-support"
+sourceMapSupport.install(options)
 import path from "path"
-import { PerfTimer } from "./perf"
+import { PerfTimer } from "./util/perf"
 import { rimraf } from "rimraf"
-import { globby, isGitIgnored } from "globby"
+import { isGitIgnored } from "globby"
 import chalk from "chalk"
-import http from "http"
-import serveHandler from "serve-handler"
 import { parseMarkdown } from "./processors/parse"
 import { filterContent } from "./processors/filter"
 import { emitContent } from "./processors/emit"
 import cfg from "../quartz.config"
-import { FilePath } from "./path"
+import { FilePath, joinSegments, slugifyFilePath } from "./util/path"
 import chokidar from "chokidar"
 import { ProcessedContent } from "./plugins/vfile"
-import WebSocket, { WebSocketServer } from "ws"
+import { Argv, BuildCtx } from "./util/ctx"
+import { glob, toPosixPath } from "./util/glob"
+import { trace } from "./util/trace"
+import { options } from "./util/sourcemap"
+import { Mutex } from "async-mutex"
 
-interface Argv {
-  directory: string
-  verbose: boolean
-  output: string
-  serve: boolean
-  port: number
-}
+async function buildQuartz(argv: Argv, mut: Mutex, clientRefresh: () => void) {
+  const ctx: BuildCtx = {
+    argv,
+    cfg,
+    allSlugs: [],
+  }
 
-async function buildQuartz(argv: Argv, version: string) {
-  console.log(chalk.bgGreen.black(`\n Quartz v${version} \n`))
   const perf = new PerfTimer()
   const output = argv.output
 
@@ -38,113 +38,149 @@
     console.log(`  Emitters: ${pluginNames("emitters").join(", ")}`)
   }
 
-  // clean
+  const release = await mut.acquire()
   perf.addEvent("clean")
   await rimraf(output)
   console.log(`Cleaned output directory \`${output}\` in ${perf.timeSince("clean")}`)
 
-  // glob
   perf.addEvent("glob")
-  const fps = await globby("**/*.md", {
-    cwd: argv.directory,
-    ignore: cfg.configuration.ignorePatterns,
-    gitignore: true,
-  })
+  const allFiles = await glob("**/*.*", argv.directory, cfg.configuration.ignorePatterns)
+  const fps = allFiles.filter((fp) => fp.endsWith(".md")).sort()
   console.log(
     `Found ${fps.length} input files from \`${argv.directory}\` in ${perf.timeSince("glob")}`,
   )
 
-  const filePaths = fps.map((fp) => `${argv.directory}${path.sep}${fp}` as FilePath)
-  const parsedFiles = await parseMarkdown(
-    cfg.plugins.transformers,
-    argv.directory,
-    filePaths,
-    argv.verbose,
-  )
-  const filteredContent = filterContent(cfg.plugins.filters, parsedFiles, argv.verbose)
-  await emitContent(argv.directory, output, cfg, filteredContent, argv.serve, argv.verbose)
+  const filePaths = fps.map((fp) => joinSegments(argv.directory, fp) as FilePath)
+  ctx.allSlugs = allFiles.map((fp) => slugifyFilePath(fp as FilePath))
+
+  const parsedFiles = await parseMarkdown(ctx, filePaths)
+  const filteredContent = filterContent(ctx, parsedFiles)
+  await emitContent(ctx, filteredContent)
   console.log(chalk.green(`Done processing ${fps.length} files in ${perf.timeSince()}`))
+  release()
 
   if (argv.serve) {
-    const wss = new WebSocketServer({ port: 3001 })
-    const connections: WebSocket[] = []
-    wss.on("connection", (ws) => connections.push(ws))
-
-    const ignored = await isGitIgnored()
-    const contentMap = new Map<FilePath, ProcessedContent>()
-    for (const content of parsedFiles) {
-      const [_tree, vfile] = content
-      contentMap.set(vfile.data.filePath!, content)
-    }
-
-    async function rebuild(fp: string, action: "add" | "change" | "unlink") {
-      perf.addEvent("rebuild")
-      if (!ignored(fp)) {
-        console.log(chalk.yellow(`Detected change in ${fp}, rebuilding...`))
-        const fullPath = `${argv.directory}${path.sep}${fp}` as FilePath
-
-        try {
-          if (action === "add" || action === "change") {
-            const [parsedContent] = await parseMarkdown(
-              cfg.plugins.transformers,
-              argv.directory,
-              [fullPath],
-              argv.verbose,
-            )
-            contentMap.set(fullPath, parsedContent)
-          } else if (action === "unlink") {
-            contentMap.delete(fullPath)
-          }
-
-          await rimraf(output)
-          const parsedFiles = [...contentMap.values()]
-          const filteredContent = filterContent(cfg.plugins.filters, parsedFiles, argv.verbose)
-          await emitContent(argv.directory, output, cfg, filteredContent, argv.serve, argv.verbose)
-          console.log(chalk.green(`Done rebuilding in ${perf.timeSince("rebuild")}`))
-        } catch {
-          console.log(chalk.yellow(`Rebuild failed. Waiting on a change to fix the error...`))
-        }
-
-        connections.forEach((conn) => conn.send("rebuild"))
-      }
-    }
-
-    const watcher = chokidar.watch(".", {
-      persistent: true,
-      cwd: argv.directory,
-      ignoreInitial: true,
-    })
-
-    watcher
-      .on("add", (fp) => rebuild(fp, "add"))
-      .on("change", (fp) => rebuild(fp, "change"))
-      .on("unlink", (fp) => rebuild(fp, "unlink"))
-
-    const server = http.createServer(async (req, res) => {
-      await serveHandler(req, res, {
-        public: output,
-        directoryListing: false,
-      })
-      const status = res.statusCode
-      const statusString =
-        status >= 200 && status < 300
-          ? chalk.green(`[${status}]`)
-          : status >= 300 && status < 400
-          ? chalk.yellow(`[${status}]`)
-          : chalk.red(`[${status}]`)
-      console.log(statusString + chalk.grey(` ${req.url}`))
-    })
-    server.listen(argv.port)
-    console.log(chalk.cyan(`Started a Quartz server listening at http://localhost:${argv.port}`))
-    console.log("hint: exit with ctrl+c")
+    return startServing(ctx, mut, parsedFiles, clientRefresh)
   }
 }
 
-export default async (argv: Argv, version: string) => {
+// setup watcher for rebuilds
+async function startServing(
+  ctx: BuildCtx,
+  mut: Mutex,
+  initialContent: ProcessedContent[],
+  clientRefresh: () => void,
+) {
+  const { argv } = ctx
+
+  const ignored = await isGitIgnored()
+  const contentMap = new Map<FilePath, ProcessedContent>()
+  for (const content of initialContent) {
+    const [_tree, vfile] = content
+    contentMap.set(vfile.data.filePath!, content)
+  }
+
+  const initialSlugs = ctx.allSlugs
+  let lastBuildMs = 0
+  const toRebuild: Set<FilePath> = new Set()
+  const toRemove: Set<FilePath> = new Set()
+  const trackedAssets: Set<FilePath> = new Set()
+  async function rebuild(fp: string, action: "add" | "change" | "delete") {
+    // don't do anything for gitignored files
+    if (ignored(fp)) {
+      return
+    }
+
+    // dont bother rebuilding for non-content files, just track and refresh
+    fp = toPosixPath(fp)
+    const filePath = joinSegments(argv.directory, fp) as FilePath
+    if (path.extname(fp) !== ".md") {
+      if (action === "add" || action === "change") {
+        trackedAssets.add(filePath)
+      } else if (action === "delete") {
+        trackedAssets.delete(filePath)
+      }
+      clientRefresh()
+      return
+    }
+
+    if (action === "add" || action === "change") {
+      toRebuild.add(filePath)
+    } else if (action === "delete") {
+      toRemove.add(filePath)
+    }
+
+    // debounce rebuilds every 250ms
+
+    const buildStart = new Date().getTime()
+    lastBuildMs = buildStart
+    const release = await mut.acquire()
+    if (lastBuildMs > buildStart) {
+      release()
+      return
+    }
+
+    const perf = new PerfTimer()
+    console.log(chalk.yellow("Detected change, rebuilding..."))
+    try {
+      const filesToRebuild = [...toRebuild].filter((fp) => !toRemove.has(fp))
+
+      const trackedSlugs = [...new Set([...contentMap.keys(), ...toRebuild, ...trackedAssets])]
+        .filter((fp) => !toRemove.has(fp))
+        .map((fp) => slugifyFilePath(path.posix.relative(argv.directory, fp) as FilePath))
+
+      ctx.allSlugs = [...new Set([...initialSlugs, ...trackedSlugs])]
+      const parsedContent = await parseMarkdown(ctx, filesToRebuild)
+      for (const content of parsedContent) {
+        const [_tree, vfile] = content
+        contentMap.set(vfile.data.filePath!, content)
+      }
+
+      for (const fp of toRemove) {
+        contentMap.delete(fp)
+      }
+
+      const parsedFiles = [...contentMap.values()]
+      const filteredContent = filterContent(ctx, parsedFiles)
+
+      // TODO: we can probably traverse the link graph to figure out what's safe to delete here
+      // instead of just deleting everything
+      await rimraf(argv.output)
+      await emitContent(ctx, filteredContent)
+      console.log(chalk.green(`Done rebuilding in ${perf.timeSince()}`))
+    } catch (err) {
+      console.log(chalk.yellow(`Rebuild failed. Waiting on a change to fix the error...`))
+      if (argv.verbose) {
+        console.log(chalk.red(err))
+      }
+    }
+
+    release()
+    clientRefresh()
+    toRebuild.clear()
+    toRemove.clear()
+  }
+
+  const watcher = chokidar.watch(".", {
+    persistent: true,
+    cwd: argv.directory,
+    ignoreInitial: true,
+  })
+
+  watcher
+    .on("add", (fp) => rebuild(fp, "add"))
+    .on("change", (fp) => rebuild(fp, "change"))
+    .on("unlink", (fp) => rebuild(fp, "delete"))
+
+  return async () => {
+    await watcher.close()
+  }
+}
+
+export default async (argv: Argv, mut: Mutex, clientRefresh: () => void) => {
   try {
-    await buildQuartz(argv, version)
-  } catch {
-    console.log(chalk.red("\nExiting Quartz due to a fatal error"))
-    process.exit(1)
+    return await buildQuartz(argv, mut, clientRefresh)
+  } catch (err) {
+    trace("\nExiting Quartz due to a fatal error", err as Error)
   }
 }

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