1 files changed, 132 insertions, 0 deletions
diff --git a/tiddlers/plugin-files-api-route.tid b/tiddlers/plugin-files-api-route.tid
new file mode 100644
index 0000000..6236926
--- /dev/null
+++ b/tiddlers/plugin-files-api-route.tid
@@ -0,0 +1,132 @@
+title: $:/plugins/local/files-api/get-files.js
+type: application/javascript
+module-type: route
+
+/*\
+title: $:/plugins/local/files-api/get-files.js
+type: application/javascript
+module-type: route
+
+GET /api/files
+\*/
+"use strict";
+
+var fs = require("fs"),
+	path = require("path");
+
+exports.methods = ["GET"];
+exports.path = /^\/api\/files\/?$/;
+
+exports.info = {
+	priority: 100
+};
+
+function encodeFilePath(filename) {
+	return filename
+		.split(path.sep)
+		.map(encodeURIComponent)
+		.join("/");
+}
+
+async function scanDirectory(rootDirectory,directory,prefix) {
+	var entries,
+		files = [];
+
+	try {
+		entries = await fs.promises.readdir(directory,{
+			withFileTypes: true
+		});
+	} catch(error) {
+		if(error.code === "ENOENT") {
+			return [];
+		}
+		throw error;
+	}
+
+	for(var index = 0; index < entries.length; index++) {
+		var entry = entries[index];
+
+		// 不公开隐藏文件。
+		if(entry.name.charAt(0) === ".") {
+			continue;
+		}
+
+		var absolutePath = path.join(directory,entry.name);
+
+		// 忽略符号链接，避免扫描到 files/ 目录之外。
+		if(entry.isDirectory()) {
+			var childFiles = await scanDirectory(
+				rootDirectory,
+				absolutePath,
+				path.join(prefix,entry.name)
+			);
+			files.push.apply(files,childFiles);
+			continue;
+		}
+
+		if(!entry.isFile()) {
+			continue;
+		}
+
+		var relativePath = path.join(prefix,entry.name),
+			extension = path.extname(entry.name).toLowerCase(),
+			extensionInfo = $tw.config.fileExtensionInfo[extension],
+			stats;
+
+		try {
+			stats = await fs.promises.stat(absolutePath);
+		} catch(error) {
+			// 文件可能在扫描过程中被删除。
+			continue;
+		}
+
+		files.push({
+			name: entry.name,
+			path: relativePath.split(path.sep).join("/"),
+			url: (prefix === "" ? "" : "") +
+				encodeFilePath(relativePath),
+			type: extensionInfo ?
+				extensionInfo.type :
+				"application/octet-stream",
+			size: stats.size,
+			modified: stats.mtime.toISOString()
+		});
+	}
+
+	return files;
+}
+
+exports.handler = function(request,response,state) {
+	var rootDirectory = path.resolve(state.boot.wikiPath,"files"),
+		pathPrefix = state.pathPrefix || "";
+
+	scanDirectory(rootDirectory,rootDirectory,"")
+		.then(function(files) {
+			files.sort(function(left,right) {
+				return left.path.localeCompare(right.path);
+			});
+
+			files.forEach(function(file) {
+				file.url = pathPrefix + "/files/" + file.url;
+			});
+
+			state.sendResponse(
+				200,
+				{"Content-Type": "application/json; charset=utf-8"},
+				JSON.stringify(files),
+				"utf8"
+			);
+		})
+		.catch(function(error) {
+			console.error("Unable to list files directory:",error);
+
+			state.sendResponse(
+				500,
+				{"Content-Type": "application/json; charset=utf-8"},
+				JSON.stringify({
+					error: "Unable to list files directory"
+				}),
+				"utf8"
+			);
+		});
+};