From 2c3dc1b69688e47d8ee728b5beaef6bd1811b42a Mon Sep 17 00:00:00 2001
From: Abduvokhid <abduvohid1996@gmail.com>
Date: Fri, 25 Nov 2022 23:16:40 +0500
Subject: [PATCH 1/2] Added SequelizeAdapter

---
 packages/sequelize/README.md       |  6 ++++++
 packages/sequelize/src/ISession.ts |  5 +++++
 packages/sequelize/src/index.ts    | 28 ++++++++++++++++++++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644 packages/sequelize/README.md
 create mode 100644 packages/sequelize/src/ISession.ts
 create mode 100644 packages/sequelize/src/index.ts

diff --git a/packages/sequelize/README.md b/packages/sequelize/README.md
new file mode 100644
index 000000000..d517f24af
--- /dev/null
+++ b/packages/sequelize/README.md
@@ -0,0 +1,6 @@
+### Quick info
+
+1. Recommended to use combination of Sequelize and Sequelize-Typescript packages
+2. Session model needs to implement all properties from ISession interface
+
+Code, docs and examples will be updates ASAP
diff --git a/packages/sequelize/src/ISession.ts b/packages/sequelize/src/ISession.ts
new file mode 100644
index 000000000..93b827a45
--- /dev/null
+++ b/packages/sequelize/src/ISession.ts
@@ -0,0 +1,5 @@
+export interface ISession {
+  id: number;
+  key: string;
+  value: string;
+}
diff --git a/packages/sequelize/src/index.ts b/packages/sequelize/src/index.ts
new file mode 100644
index 000000000..fc6c11d5a
--- /dev/null
+++ b/packages/sequelize/src/index.ts
@@ -0,0 +1,28 @@
+import { StorageAdapter } from 'grammy'
+import { Repository } from 'sequelize-typescript'
+
+export class SequelizeAdapter<T> implements StorageAdapter<T> {
+  private repository: Repository<any>
+
+  constructor (options: { repository: Repository<any> }) {
+    this.repository = options.repository
+  }
+
+  async read (key: string) {
+    const session = await this.repository.findOne({ where: { key: key } })
+    if (session === null || session === undefined) {
+      return undefined
+    }
+    return JSON.parse(session.value) as unknown as T
+  }
+
+  async write (key: string, value: T) {
+    const jsonValue = JSON.stringify(value)
+    await this.repository.upsert({key: key, value: jsonValue})
+  }
+
+  async delete (key: string) {
+    await this.repository.destroy({ where: { key: key } })
+  }
+
+}

From 9150667acfc40fb5e9a79706881c72b1f64b5735 Mon Sep 17 00:00:00 2001
From: Abduvokhid <abduvohid1996@gmail.com>
Date: Fri, 25 Nov 2022 23:25:46 +0500
Subject: [PATCH 2/2] Added SequelizeAdapter

---
 packages/sequelize/README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/sequelize/README.md b/packages/sequelize/README.md
index d517f24af..edc03f059 100644
--- a/packages/sequelize/README.md
+++ b/packages/sequelize/README.md
@@ -2,5 +2,6 @@
 
 1. Recommended to use combination of Sequelize and Sequelize-Typescript packages
 2. Session model needs to implement all properties from ISession interface
+3. Mark "key" property of Session model as unique (it's required for Sequelize "upsert" method to work)
 
 Code, docs and examples will be updates ASAP