新增paint页面，暂时放弃api来fetch数据构建页面，预计可能还有大量问题，暂时打算先整理所有的文件

blueprint/index_views.py

@@ -4,6 +4,15 @@ import os
 
 index_bp = Blueprint('/', __name__)
 
+db_path = "/var/open-ww3-project-ww3-tw/databases/sqlite/owp.db"
+
+def get_paint_db_conn():
+    conn = sqlite3.connect(db_path)
+    conn.row_factory = sqlite3.Row
+    return conn
+
+
+
 @index_bp.route('/')
 def repage():
     return redirect(url_for('blog.home'))
@@ -14,4 +23,23 @@ def mirrors():
 
 @index_bp.route('/greet/<name>/')
 def greet(name):
-    return f'Hello, {name}!'
+    return f'Hello, {name}!'
+
+@index_bp.route('/paint/')
+def paint_home():
+    conn = get_paint_db_conn()
+    select_sql =  "SELECT * FROM paint;"
+    data = conn.execute(select_sql).fetchall()
+    conn.close()
+
+    # 展示图片
+    img_url = "https://open-ww3-project.ww3.tw/blog/folders/paint/new/"
+
+    # 查询tags和class
+    db_cursor = sqlite3.connect(db_path).cursor()
+    tags_sql = "SELECT DISTINCT tags FROM paint;"
+    class_sql = "SELECT DISTINCT class FROM paint;"
+
+    for class_data in db_cursor.execute(class_sql).fetchall():
+        for tags_data in db_cursor.execute(tags_sql).fetchall():
+            return render_template('paint/home.html', data = data, tags_data = tags_data[0], class_data = class_data[0], img_url = img_url)