From 1c51e97354b62b69c00903b9148c122607bd45cd Mon Sep 17 00:00:00 2001
From: Nathan Woodburn <github@nathan.woodburn.au>
Date: Fri, 21 Nov 2025 13:11:44 +1100
Subject: [PATCH] feat: Add database for namehash caching

---
 .gitignore           |  1 +
 server.py            | 76 +++++++++++++++++++++++++++++++++++++++++++-
 templates/index.html | 26 +++++++++------
 3 files changed, 92 insertions(+), 11 deletions(-)

diff --git a/.gitignore b/.gitignore
index 7d847cc..6fc113c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ __pycache__/
 .env
 .vs/
 .venv/
+fireexplorer.db
diff --git a/server.py b/server.py
index 4d35848..d94a1a0 100644
--- a/server.py
+++ b/server.py
@@ -5,9 +5,12 @@ from flask import (
     send_from_directory,
     send_file,
     jsonify,
+    g,
+    request,
 )
 import os
 import requests
+import sqlite3
 from datetime import datetime
 import dotenv
 from tools import hip2, wallet_txt
@@ -15,6 +18,39 @@ from tools import hip2, wallet_txt
 dotenv.load_dotenv()
 
 app = Flask(__name__)
+DATABASE = "fireexplorer.db"
+
+
+def get_db():
+    db = getattr(g, "_database", None)
+    if db is None:
+        db = g._database = sqlite3.connect(DATABASE)
+        db.row_factory = sqlite3.Row
+    return db
+
+
+@app.teardown_appcontext
+def close_connection(exception):
+    db = getattr(g, "_database", None)
+    if db is not None:
+        db.close()
+
+
+def init_db():
+    with app.app_context():
+        db = get_db()
+        db.execute(
+            """
+            CREATE TABLE IF NOT EXISTS names (
+                namehash TEXT PRIMARY KEY,
+                name TEXT NOT NULL
+            )
+        """
+        )
+        db.commit()
+
+
+init_db()
 
 
 def find(name, path):
@@ -133,6 +169,32 @@ def catch_all(path: str):
     return render_template("404.html"), 404
 
 
+# endregion
+
+
+# region API routes
+@app.route("/api/v1/namehash/<namehash>")
+def namehash_api(namehash):
+    db = get_db()
+    cur = db.execute("SELECT * FROM names WHERE namehash = ?", (namehash,))
+    row = cur.fetchone()
+    if row is None:
+        # Get namehash from hsd.hns.au
+        req = requests.get(f"https://hsd.hns.au/api/v1/namehash/{namehash}")
+        if req.status_code == 200:
+            name = req.json().get("result")
+            if not name:
+                return jsonify({"name": "Error", "namehash": namehash})
+            # Insert into database
+            db.execute(
+                "INSERT OR REPLACE INTO names (namehash, name) VALUES (?, ?)",
+                (namehash, name),
+            )
+            db.commit()
+            return jsonify({"name": name, "namehash": namehash})
+    return jsonify(dict(row))
+
+
 @app.route("/api/v1/status")
 def api_status():
     return jsonify(
@@ -176,6 +238,18 @@ def hip02(domain: str):
     )
 
 
+@app.route("/api/v1/covenant", methods=["POST"])
+def covenant_api():
+    data = request.get_json()
+
+    return jsonify(
+        {
+            "success": True,
+            "data": data,
+        }
+    )
+
+
 # endregion
 
 
@@ -188,4 +262,4 @@ def not_found(e):
 
 # endregion
 if __name__ == "__main__":
-    app.run(debug=True, port=5000, host="0.0.0.0")
+    app.run(debug=True, port=5000, host="127.0.0.1")
diff --git a/templates/index.html b/templates/index.html
index 042a506..9dbe6eb 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -1178,17 +1178,23 @@
             }
             
             showLoading('name-result');
-            const data = await apiCall(`namehash/${nameHash}`);
             
-            // Check if result is valid and redirect to name page
-            const resultElement = document.getElementById('name-result');
-            if (data.error) {
-                resultElement.innerHTML = `<div class="error">Error: ${data.error.message ? data.error.message : "Failed to lookup hash"}</div>`;
-            } else if (data.result && typeof data.result === 'string') {
-                // Valid name found, redirect to name page
-                window.location.href = `/name/${data.result}`;
-            } else {
-                resultElement.innerHTML = `<div class="error">No name found for this hash</div>`;
+            try {
+                const response = await fetch(`/api/v1/namehash/${nameHash}`);
+                const data = await response.json();
+                
+                const resultElement = document.getElementById('name-result');
+                if (data.error) {
+                    resultElement.innerHTML = `<div class="error">Error: ${data.error}</div>`;
+                } else if (data.name) {
+                    // Valid name found, redirect to name page
+                    window.location.href = `/name/${data.name}`;
+                } else {
+                    resultElement.innerHTML = `<div class="error">No name found for this hash</div>`;
+                }
+            } catch (e) {
+                const resultElement = document.getElementById('name-result');
+                resultElement.innerHTML = `<div class="error">Error: ${e.message}</div>`;
             }
         }