implemented User Schema & created seed Function for DB

src/db/schema.ts

@@ -1,2 +1,64 @@
-// @ts-ignore: Remove, when creating Schemas
-import { int, sqliteTable, text } from "drizzle-orm/sqlite-core"
+import { relations } from "drizzle-orm"
+import { int, sqliteTable, text, primaryKey } from "drizzle-orm/sqlite-core"
+
+export const usersTable = sqliteTable("users", {
+    id: int("id").primaryKey({ autoIncrement: true }),
+    name: text("name").notNull(),
+    password: text("hash_password").notNull(),
+    email: text("email").notNull().unique()
+})
+
+export const rolesTable = sqliteTable("roles", {
+    id: int("id").primaryKey({ autoIncrement: true }),
+    name: text("name").notNull()
+})
+
+export const permissionsTable = sqliteTable("permissions", {
+    id: int("id").primaryKey({ autoIncrement: true }),
+    name: text("name").notNull()
+})
+
+export const usersRolesTable = sqliteTable('users_roles', {
+    userId: int("user_id").notNull().references(() => usersTable.id),
+    roleId: int("role_id").notNull().references(() => rolesTable.id)
+}, (t) => [ primaryKey({ columns: [ t.userId, t.roleId ] }) ])
+
+export const rolesPermissionsTable = sqliteTable('roles_permissions', {
+    roleId: int("role_id").notNull().references(() => rolesTable.id),
+    permissionId: int("permission_id").notNull().references(() => permissionsTable.id)
+}, (t) => [primaryKey({columns: [t.roleId, t.permissionId]})])
+
+export const usersRelations = relations(usersTable, ({ many }) => ({
+    usersToRoles: many(usersRolesTable),
+}))
+
+export const rolesRelations = relations(rolesTable, ({ many }) => ({
+    usersToRoles: many(usersRolesTable),
+    rolesToPermissions: many(rolesPermissionsTable)
+}))
+
+export const permissionsRelations = relations(permissionsTable, ({ many }) => ({
+    rolesToPermissions: many(rolesPermissionsTable)
+}))
+
+export const usersToRolesRelations = relations(usersRolesTable, ({ one }) => ({
+    user: one(usersTable, {
+        fields: [usersRolesTable.userId],
+        references: [usersTable.id]
+    }),
+    role: one(rolesTable, {
+        fields: [usersRolesTable.roleId],
+        references: [rolesTable.id]
+    })
+}))
+
+export const rolesToPermissionsRelations = relations(rolesPermissionsTable, ({one}) => ({
+    role: one(rolesTable, {
+        fields: [rolesPermissionsTable.roleId],
+        references: [rolesTable.id]
+    }),
+    permission: one(permissionsTable, {
+        fields: [rolesPermissionsTable.permissionId],
+        references: [permissionsTable.id]
+    })
+}))