feat: add wechat pay

backend/database/migrations/20250109095933_create_post.sql

@@ -11,7 +11,7 @@ CREATE TABLE
         tenant_id INT8 NOT NULL,
         user_id INT8 NOT NULL,
 
-        hash_id VARCHAR(128) NOT NULL,
+        hash VARCHAR(128) NOT NULL UNIQUE,
         title VARCHAR(128) NOT NULL,
         description VARCHAR(256) NOT NULL,
         poster VARCHAR(128) NOT NULL,
@@ -25,6 +25,31 @@ CREATE TABLE
         meta jsonb default '{}'::jsonb,
         assets jsonb default '{}'::jsonb
     );
+-- create indexes
+CREATE INDEX posts_tenant_id_index ON posts (tenant_id);
+CREATE INDEX posts_user_id_index ON posts (user_id);
+CREATE INDEX posts_title_index ON posts (title);
+
+
+-- create user bought posts
+CREATE TABLE
+    user_bought_posts (
+        id SERIAL8 PRIMARY KEY,
+        created_at timestamp NOT NULL default now(),
+        updated_at timestamp NOT NULL default now(),
+
+        tenant_id INT8 NOT NULL,
+        user_id INT8 NOT NULL,
+        post_id INT8 NOT NULL,
+        price INT8 NOT NULL default 0,
+        discount INT2 NOT NULL default 100,
+        meta jsonb default '{}'::jsonb
+    );
+-- create indexes
+CREATE INDEX user_bought_posts_tenant_id_index ON user_bought_posts (tenant_id);
+CREATE INDEX user_bought_posts_user_id_index ON user_bought_posts (user_id);
+CREATE INDEX user_bought_posts_post_id_index ON user_bought_posts (post_id);
+
 -- +goose StatementEnd
 
 -- +goose Down