From d9f290cda665d82d133e148fee83c57dc83982f8 Mon Sep 17 00:00:00 2001
From: rooyca <rooyca@gmail.com>
Date: Tue, 23 Apr 2024 14:23:47 -0500
Subject: [PATCH] update: use frontmatter variables on codeblock (#9)

---
 README.md           | 12 +++++++++---
 frontmatterUtils.ts | 20 ++++++++++++++++++++
 main.ts             | 28 ++++++++++++++++++++++++++--
 manifest.json       |  2 +-
 package.json        |  2 +-
 5 files changed, 57 insertions(+), 7 deletions(-)
 create mode 100644 frontmatterUtils.ts

diff --git a/README.md b/README.md
index 954809b..0911e27 100644
--- a/README.md
+++ b/README.md
@@ -33,10 +33,10 @@ To use the plugin, create a code block with the language set to `req`. Inside th
 
 | Key| Description| Default|
 | ---| -----------|---------|
-| url | The URL to send the request to|  |
+| url | The URL to send the request to (You can use variables defined in the frontmatter)|  |
 | method | Request method (GET, POST, PUT, DELETE)| GET |
-| body | Data to send with the request. Data should by in JSON format|  |
-| headers | Header(s) for the request. Data should by in JSON format|  |
+| body | Data to send with the request. Data should by in JSON format (You can use variables defined in the frontmatter)|  |
+| headers | Header(s) for the request. Data should by in JSON format (You can use variables defined in the frontmatter)|  |
 | show | Response data to display. You can use a right arrow `->` to access nested objects| ALL |
 | format | Format in which the response should be displayed| {} |
 | response-type | The type of response we are getting (json, txt or md)| json |
@@ -56,6 +56,12 @@ You can show the entire response by only specifying the url:
 url: https://jsonplaceholder.typicode.com/todos/1
 ```
 
+You can use the frontmatter variables in the URL, for instance, if you have a variable `numb` defined in the frontmatter, you can use it like this:
+
+```req
+url: https://jsonplaceholder.typicode.com/todos/{{this.numb}}
+```
+
 You can specify the response type you are getting:
 
 ```req
diff --git a/frontmatterUtils.ts b/frontmatterUtils.ts
new file mode 100644
index 0000000..be14e91
--- /dev/null
+++ b/frontmatterUtils.ts
@@ -0,0 +1,20 @@
+import { parseYaml } from "obsidian";
+
+export const FRONTMATTER_REGEX = /^\n*---[^\n]*\n+(?<fm>.+?)\n+---.*/s;
+
+export type Frontmatter = string | null | undefined;
+
+export function readFrontmatter(md: string) {
+  const result = md.match(FRONTMATTER_REGEX);
+
+  return result?.groups?.fm;
+}
+
+// throws: MetadataError
+export function parseFrontmatter(input: Frontmatter) {
+  if (input === undefined || input === null) { 
+    throw new Error("No hay frontmatter definido.");
+  }
+
+  return parseYaml(input);
+}
\ No newline at end of file
diff --git a/main.ts b/main.ts
index a6c32b3..b53f48f 100644
--- a/main.ts
+++ b/main.ts
@@ -1,5 +1,26 @@
 import { App, Editor, MarkdownView, Modal, Plugin, PluginSettingTab, Setting } from 'obsidian';
+import { readFrontmatter, parseFrontmatter } from './frontmatterUtils';
 
+export function checkFrontmatter(req_prop: string){
+	const regex = /{{this\.([^{}]*)}}/g;
+	const match = req_prop.match(regex);
+
+	if (match) {
+		const var_name = match[0].replace(/{{this\.|}}/g, "");
+		const activeView = this.app.workspace.getActiveViewOfType(MarkdownView);
+		const markdownContent = activeView.editor.getValue();
+
+		try {
+			const frontmatterData = parseFrontmatter(readFrontmatter(markdownContent));
+			req_prop = req_prop.replace(regex, frontmatterData[var_name] || "");
+			return req_prop;
+		} catch (e) {
+			console.error(e.message);
+			return;
+			}
+		} 
+		return req_prop;
+}
 
 interface LoadAPIRSettings {
 	URL: string;
@@ -119,7 +140,8 @@ export default class MainAPIR extends Plugin {
 						        break;
 
 						    case lowercaseLine.includes("url: "):
-						        URL = line.replace(/url: /i, "");
+										URL = line.replace(/url: /i, "");
+										URL = checkFrontmatter(URL);
 						        break;
 
 						    case lowercaseLine.includes("response-type"):
@@ -136,11 +158,13 @@ export default class MainAPIR extends Plugin {
 						        break;
 
 						    case lowercaseLine.includes("headers: "):
-						        headers = JSON.parse(line.replace(/headers: /i, ""));
+						        headers = line.replace(/headers: /i, "");
+						        headers = JSON.parse(checkFrontmatter(headers));
 						        break;
 
 						    case lowercaseLine.includes("body: "):
 						        body = line.replace(/body: /i, "");
+						        body = checkFrontmatter(body);
 						        break;
 
 						    case lowercaseLine.includes("format: "):
diff --git a/manifest.json b/manifest.json
index de33873..1c33b02 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
 	"id": "api-request",
 	"name": "APIRequest",
-	"version": "1.1.2",
+	"version": "1.1.3",
 	"minAppVersion": "0.15.0",
 	"description": "Request and retrieve data from APIs. The responses are delivered in a JSON format for easy integration with your notes.",
 	"author": "rooyca",
diff --git a/package.json b/package.json
index 541b870..933c8d3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "api-request",
-	"version": "1.1.2",
+	"version": "1.1.3",
 	"description": "Request and retrieve data from APIs. The responses are delivered in a JSON format for easy integration with your notes.",
 	"main": "main.js",
 	"scripts": {