From c5db9d2b69a2b729ab78ae052b83f883b610e055 Mon Sep 17 00:00:00 2001
From: Alex Wilson <a@ax.gy>
Date: Mon, 13 Jun 2022 01:18:48 +0100
Subject: [PATCH] feat(export): Make Gatsby content available via JSON

---
 libraries/gatsby-awt-json-exporter/README.md  |  0
 .../gatsby-awt-json-exporter/gatsby-node.js   | 72 +++++++++++++++++++
 .../gatsby-awt-json-exporter/package.json     | 15 ++++
 services/personal-website/gatsby-config.js    |  3 +
 services/personal-website/package.json        |  1 +
 5 files changed, 91 insertions(+)
 create mode 100644 libraries/gatsby-awt-json-exporter/README.md
 create mode 100644 libraries/gatsby-awt-json-exporter/gatsby-node.js
 create mode 100644 libraries/gatsby-awt-json-exporter/package.json

diff --git a/libraries/gatsby-awt-json-exporter/README.md b/libraries/gatsby-awt-json-exporter/README.md
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/libraries/gatsby-awt-json-exporter/gatsby-node.js b/libraries/gatsby-awt-json-exporter/gatsby-node.js
new file mode 100644
index 0000000000..993a24ce20
--- /dev/null
+++ b/libraries/gatsby-awt-json-exporter/gatsby-node.js
@@ -0,0 +1,72 @@
+const fs = require('fs')
+const path = require('path')
+
+const indexPath = `./public/__content.json`
+const collectionPath = `./public/__content/`
+
+exports.onPostBuild = ({graphql}) => {
+  graphql(`
+    {
+      content: allMarkdownRemark(
+        sort: { order: DESC, fields: [frontmatter___date] },
+      ) {
+        edges {
+          node {
+            snippet: excerpt(pruneLength: 220, format: PLAIN)
+            html
+            fields {
+              id
+              slug
+              _legacy_slug
+            }
+            frontmatter {
+              title
+              tags
+              date
+            }
+          }
+        }
+      }
+    }
+  `).then(result => {
+    if (!fs.existsSync(collectionPath)) fs.mkdirSync(collectionPath)
+
+    const topics = {}
+    const content = result.data.content.edges.map(({ node }) => {
+      const packet = {
+        id: node.fields.id,
+        raw: node
+      }
+
+      if (node.frontmatter.tags) {
+        node.frontmatter.tags.forEach(tag => {
+          if (!(tag in topics)) {
+            topics[tag] = {
+              members: [],
+              total: 0
+            }
+          }
+          topics[tag].members.push(packet.id)
+          topics[tag].total++
+        })
+      }
+
+      return packet
+    })
+
+    const all = {
+      content,
+      topics,
+      meta: {
+        content: content.length,
+        topics: topics.length,
+        updated: (new Date).toISOString()
+      }
+    }
+    fs.writeFileSync(path.resolve(indexPath), JSON.stringify(all))
+
+    content.map(content => {
+      fs.writeFileSync(path.resolve(collectionPath, `${content.id}.json`), JSON.stringify(content))
+    })
+  })
+}
diff --git a/libraries/gatsby-awt-json-exporter/package.json b/libraries/gatsby-awt-json-exporter/package.json
new file mode 100644
index 0000000000..fc5a28db63
--- /dev/null
+++ b/libraries/gatsby-awt-json-exporter/package.json
@@ -0,0 +1,15 @@
+{
+    "name": "@alexwilson/gatsby-awt-json-exporter",
+    "version": "1.0.0",
+    "description": "Export JSON files",
+    "main": "index.js",
+    "author": "Alex Wilson <alex@alexwilson.tech>",
+    "license": "private",
+    "private": "true",
+    "dependencies": {
+    },
+    "peerDependencies": {
+      "gatsby": ">2.0.0-alpha"
+    }
+  }
+  
\ No newline at end of file
diff --git a/services/personal-website/gatsby-config.js b/services/personal-website/gatsby-config.js
index d74e5079cb..e1ab4d6bdb 100644
--- a/services/personal-website/gatsby-config.js
+++ b/services/personal-website/gatsby-config.js
@@ -225,6 +225,9 @@ module.exports = {
           families: ['Overpass:400,600,800']
         }
       }
+    },
+    {
+      resolve: '@alexwilson/gatsby-awt-json-exporter'
     }
   ],
 }
diff --git a/services/personal-website/package.json b/services/personal-website/package.json
index 36f6156bc6..e544c51cb1 100644
--- a/services/personal-website/package.json
+++ b/services/personal-website/package.json
@@ -25,6 +25,7 @@
   "homepage": "https://github.com/alexwilson/personal-website#readme",
   "dependencies": {
     "@alexwilson/gatsby-remark-rewrite-images": "^1.0.0",
+    "@alexwilson/gatsby-awt-json-exporter": "^1.0.0",
     "@alexwilson/legacy-components": "*",
     "@loadable/component": "^5.15.2",
     "date-fns": "^2.11.1",