Add users and role/permission migrations

migrations/00001_users.sql

@@ -0,0 +1,15 @@
+-- +goose Up
+CREATE TABLE users (
+    id            uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+    email         text NOT NULL,
+    given_name    text NOT NULL,
+    family_name   text NOT NULL,
+    password_hash text NOT NULL,
+    created_at    timestamptz NOT NULL DEFAULT now(),
+    updated_at    timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE UNIQUE INDEX users_email_key ON users (lower(email));
+
+-- +goose Down
+DROP TABLE users;

migrations/00002_roles_permissions.sql

@@ -0,0 +1,39 @@
+-- +goose Up
+CREATE TABLE roles (
+    id         integer PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+    name       text NOT NULL UNIQUE,
+    created_at timestamptz NOT NULL DEFAULT now(),
+    updated_at timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE TABLE permissions (
+    id          integer PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+    name        text NOT NULL UNIQUE,
+    description text NOT NULL DEFAULT '',
+    created_at  timestamptz NOT NULL DEFAULT now(),
+    updated_at  timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE TABLE role_permissions (
+    role_id       integer NOT NULL REFERENCES roles (id) ON DELETE CASCADE,
+    permission_id integer NOT NULL REFERENCES permissions (id) ON DELETE CASCADE,
+    created_at    timestamptz NOT NULL DEFAULT now(),
+    PRIMARY KEY (role_id, permission_id)
+);
+
+CREATE INDEX role_permissions_permission_id_idx ON role_permissions (permission_id);
+
+CREATE TABLE user_roles (
+    user_id    uuid NOT NULL REFERENCES users (id) ON DELETE CASCADE,
+    role_id    integer NOT NULL REFERENCES roles (id) ON DELETE CASCADE,
+    created_at timestamptz NOT NULL DEFAULT now(),
+    PRIMARY KEY (user_id, role_id)
+);
+
+CREATE INDEX user_roles_role_id_idx ON user_roles (role_id);
+
+-- +goose Down
+DROP TABLE user_roles;
+DROP TABLE role_permissions;
+DROP TABLE permissions;
+DROP TABLE roles;