From: Dessalines <tyhou13@gmx.com>
Date: Thu, 28 Feb 2019 06:02:55 +0000 (-0800)
Subject: Starting to work on Rust Diesel Schema. #5
X-Git-Url: http://these/git/%7BcommunityRss%7D?a=commitdiff_plain;h=92ea945619a512d9c301492f81a8a017e73654f4;p=lemmy.git

Starting to work on Rust Diesel Schema. #5
---

diff --git a/API.md b/API.md
index 1a5af669..47c57ac4 100644
--- a/API.md
+++ b/API.md
@@ -49,7 +49,7 @@
   "@context": "https://www.w3.org/ns/activitystreams",
   "type": "Person",
   "id": "https://rust-reddit-fediverse/api/v1/user/sally_smith",
-  "name": "Sally Smith", // Their chosen alias
+  "name": "sally_smith", // TODO can't find an activitypub vocab for alias.
   "icon"?: {
     "type": "Image",
     "name": "User icon",
diff --git a/README.md b/README.md
index 84a421eb..4802a905 100644
--- a/README.md
+++ b/README.md
@@ -2,20 +2,18 @@
 
 We have a twitter alternative (mastodon), a facebook alternative (friendica), so let's build a reddit alternative in the fediverse.
 
-[Matrix Chatroom](https://riot.im/app/#/room/#rust-reddit-fediverse:matrix.org)
+[Matrix Chat: #rust-reddit-fediverse:matrix.org](https://riot.im/app/#/room/#rust-reddit-fediverse:matrix.org)
 
-## TODOs
-- Create a markdown doc for ActivityPub actions: [API.md](API.md)
+[ActivityPub API.md](API.md)
 
-## Goals
 
+## Goals
 - Come up with a name / codename.
 - Must have communities.
 - Must have threaded comments.
 - Must be federated: liking and following communities across instances.
 
 ## Questions
-
 - How does voting work? Should we go back to the old way of showing up and downvote counts? Or just a score?
 - Decide on tech to be used
   - Backend: Actix, Diesel.
@@ -27,5 +25,5 @@ We have a twitter alternative (mastodon), a facebook alternative (friendica), so
 - Use the [activitypub crate.](https://docs.rs/activitypub/0.1.4/activitypub/)
 - https://docs.rs/activitypub/0.1.4/activitypub/
 - [Activitypub vocab.](https://www.w3.org/TR/activitystreams-vocabulary/)
-
-
+- [Diesel to Postgres data types](https://kotiri.com/2018/01/31/postgresql-diesel-rust-types.html)
+- [helpful diesel examples](http://siciarz.net/24-days-rust-diesel/)
diff --git a/server/.gitignore b/server/.gitignore
new file mode 100644
index 00000000..fedaa2b1
--- /dev/null
+++ b/server/.gitignore
@@ -0,0 +1,2 @@
+/target
+.env
diff --git a/server/Cargo.lock b/server/Cargo.lock
new file mode 100644
index 00000000..93769d2d
--- /dev/null
+++ b/server/Cargo.lock
@@ -0,0 +1,664 @@
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diff --git a/server/Cargo.toml b/server/Cargo.toml
new file mode 100644
index 00000000..ba497f44
--- /dev/null
+++ b/server/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "server"
+version = "0.0.1"
+authors = ["Dessalines <happydooby@gmail.com>"]
+
+[dependencies]
+diesel = { version = "1.4.1", features = ["postgres","chrono"] }
+dotenv = "0.9.0"
+bcrypt = "0.3"
+activitypub = "0.1.4"
+chrono = { version = "0.4", features = ["serde"] }
+failure = "0.1.5"
+serde_json = "*"
diff --git a/server/diesel.toml b/server/diesel.toml
new file mode 100644
index 00000000..92267c82
--- /dev/null
+++ b/server/diesel.toml
@@ -0,0 +1,5 @@
+# For documentation on how to configure this file,
+# see diesel.rs/guides/configuring-diesel-cli
+
+[print_schema]
+file = "src/schema.rs"
diff --git a/server/migrations/.gitkeep b/server/migrations/.gitkeep
new file mode 100644
index 00000000..e69de29b
diff --git a/server/migrations/00000000000000_diesel_initial_setup/down.sql b/server/migrations/00000000000000_diesel_initial_setup/down.sql
new file mode 100644
index 00000000..a9f52609
--- /dev/null
+++ b/server/migrations/00000000000000_diesel_initial_setup/down.sql
@@ -0,0 +1,6 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+DROP FUNCTION IF EXISTS diesel_manage_updated_at(_tbl regclass);
+DROP FUNCTION IF EXISTS diesel_set_updated_at();
diff --git a/server/migrations/00000000000000_diesel_initial_setup/up.sql b/server/migrations/00000000000000_diesel_initial_setup/up.sql
new file mode 100644
index 00000000..d68895b1
--- /dev/null
+++ b/server/migrations/00000000000000_diesel_initial_setup/up.sql
@@ -0,0 +1,36 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+
+
+
+-- Sets up a trigger for the given table to automatically set a column called
+-- `updated_at` whenever the row is modified (unless `updated_at` was included
+-- in the modified columns)
+--
+-- # Example
+--
+-- ```sql
+-- CREATE TABLE users (id SERIAL PRIMARY KEY, updated_at TIMESTAMP NOT NULL DEFAULT NOW());
+--
+-- SELECT diesel_manage_updated_at('users');
+-- ```
+CREATE OR REPLACE FUNCTION diesel_manage_updated_at(_tbl regclass) RETURNS VOID AS $$
+BEGIN
+    EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
+                    FOR EACH ROW EXECUTE PROCEDURE diesel_set_updated_at()', _tbl);
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION diesel_set_updated_at() RETURNS trigger AS $$
+BEGIN
+    IF (
+        NEW IS DISTINCT FROM OLD AND
+        NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
+    ) THEN
+        NEW.updated_at := current_timestamp;
+    END IF;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
diff --git a/server/migrations/2019-02-26-002946_create_user/down.sql b/server/migrations/2019-02-26-002946_create_user/down.sql
new file mode 100644
index 00000000..606be6e1
--- /dev/null
+++ b/server/migrations/2019-02-26-002946_create_user/down.sql
@@ -0,0 +1 @@
+drop table user_
diff --git a/server/migrations/2019-02-26-002946_create_user/up.sql b/server/migrations/2019-02-26-002946_create_user/up.sql
new file mode 100644
index 00000000..4f9984b7
--- /dev/null
+++ b/server/migrations/2019-02-26-002946_create_user/up.sql
@@ -0,0 +1,8 @@
+create table user_ (
+  id serial primary key,
+  name varchar(20) not null,
+  password_encrypted varchar(200) not null,
+  email varchar(200),
+  icon bytea,
+  startTime timestamp not null default now()
+)
diff --git a/server/migrations/2019-02-27-170003_create_community/down.sql b/server/migrations/2019-02-27-170003_create_community/down.sql
new file mode 100644
index 00000000..5e751d43
--- /dev/null
+++ b/server/migrations/2019-02-27-170003_create_community/down.sql
@@ -0,0 +1 @@
+drop table community
diff --git a/server/migrations/2019-02-27-170003_create_community/up.sql b/server/migrations/2019-02-27-170003_create_community/up.sql
new file mode 100644
index 00000000..c5eafc7b
--- /dev/null
+++ b/server/migrations/2019-02-27-170003_create_community/up.sql
@@ -0,0 +1,5 @@
+create table community (
+  id serial primary key,
+  name varchar(20) not null,
+  starttime timestamp not null default now()
+)
diff --git a/server/migrations/2019-02-27-170402_create_community_user/down.sql b/server/migrations/2019-02-27-170402_create_community_user/down.sql
new file mode 100644
index 00000000..a1571c72
--- /dev/null
+++ b/server/migrations/2019-02-27-170402_create_community_user/down.sql
@@ -0,0 +1,2 @@
+drop table community_user;
+-- drop type community_user_type;
diff --git a/server/migrations/2019-02-27-170402_create_community_user/up.sql b/server/migrations/2019-02-27-170402_create_community_user/up.sql
new file mode 100644
index 00000000..f60eea46
--- /dev/null
+++ b/server/migrations/2019-02-27-170402_create_community_user/up.sql
@@ -0,0 +1,10 @@
+-- No support for types yet, so just do 0,1,2
+-- create type community_user_type as enum ('creator', 'moderator', 'user');
+
+create table community_user (
+  id serial primary key,
+  fedi_user_id varchar(100) not null,
+  community_id int references community on update cascade on delete cascade,
+  community_user_type smallint not null default 2,
+  starttime timestamp not null default now()
+)
diff --git a/server/src/actions/mod.rs b/server/src/actions/mod.rs
new file mode 100644
index 00000000..bc675369
--- /dev/null
+++ b/server/src/actions/mod.rs
@@ -0,0 +1,3 @@
+use diesel::*;
+pub mod user;
+
diff --git a/server/src/actions/user.rs b/server/src/actions/user.rs
new file mode 100644
index 00000000..2a017fd2
--- /dev/null
+++ b/server/src/actions/user.rs
@@ -0,0 +1,83 @@
+extern crate diesel;
+use schema::user_;
+use diesel::*;
+use diesel::result::Error;
+use schema::user_::dsl::*;
+use Crud;
+
+#[derive(Queryable, PartialEq, Debug)]
+pub struct User_ {
+  pub id: i32,
+  pub name: String,
+  pub password_encrypted: String,
+  pub email: Option<String>,
+  pub icon: Option<Vec<u8>>,
+  pub start_time: chrono::NaiveDateTime
+}
+
+#[derive(Insertable)]
+#[table_name="user_"]
+pub struct NewUser<'a> {
+    pub name: &'a str,
+    pub password_encrypted: &'a str,
+    pub email: Option<&'a str>,
+}
+
+impl Crud for User_ {
+  fn read(conn: &PgConnection, user_id: i32) -> User_ {
+    user_.find(user_id)
+      .first::<User_>(conn)
+      .expect("Error in query")
+  }
+
+ fn delete(conn: &PgConnection, user_id: i32) -> usize {
+    diesel::delete(user_.find(user_id))
+      .execute(conn)
+      .expect("Error deleting.")
+  }
+
+// fn create<NewUser>(conn: &PgConnection, mut new_user: NewUser) -> Result<User_, Error> {
+}
+
+pub fn create(conn: &PgConnection, mut new_user: NewUser) -> Result<User_, Error> {
+  new_user.password_encrypted = "here";
+    // new_user.password_encrypted;
+    insert_into(user_)
+      .values(new_user)
+      .get_result(conn)
+}
+
+#[cfg(test)]
+mod tests {
+  use establish_connection;
+  use super::*;
+ #[test]
+  fn test_crud() {
+    let conn = establish_connection();
+    
+    let new_user = NewUser {
+      name: "thom".into(),
+      password_encrypted: "nope".into(),
+      email: None
+    };
+
+    let inserted_user = create(&conn, new_user).unwrap();
+
+    let expected_user = User_ {
+      id: inserted_user.id,
+      name: "thom".into(),
+      password_encrypted: "here".into(),
+      email: None,
+      icon: None,
+      start_time: inserted_user.start_time
+    };
+
+    let read_user = User_::read(&conn, inserted_user.id);
+    let num_deleted = User_::delete(&conn, inserted_user.id);
+    
+    assert_eq!(expected_user, read_user);
+    assert_eq!(expected_user, inserted_user);
+    assert_eq!(1, num_deleted);
+
+  }
+}
diff --git a/server/src/activitypub.rs b/server/src/activitypub.rs
new file mode 100644
index 00000000..3e6c46e4
--- /dev/null
+++ b/server/src/activitypub.rs
@@ -0,0 +1,7 @@
+extern crate activitypub;
+extern crate failure;
+extern crate serde_json;
+
+// fn user -> Result<(), Error> {
+
+// }
diff --git a/server/src/lib.rs b/server/src/lib.rs
new file mode 100644
index 00000000..77c8ee5e
--- /dev/null
+++ b/server/src/lib.rs
@@ -0,0 +1,41 @@
+#[macro_use]
+extern crate diesel;
+extern crate dotenv;
+
+use diesel::prelude::*;
+use diesel::pg::PgConnection;
+use dotenv::dotenv;
+use std::env;
+
+pub mod schema;
+pub mod models;
+pub mod activitypub;
+pub mod actions;
+
+pub fn establish_connection() -> PgConnection {
+  dotenv().ok();
+
+  let database_url = env::var("DATABASE_URL")
+    .expect("DATABASE_URL must be set");
+  PgConnection::establish(&database_url)
+    .expect(&format!("Error connecting to {}", database_url))
+}
+
+trait Crud {
+  fn read(conn: &PgConnection, id: i32) -> Self;
+  fn delete(conn: &PgConnection, id: i32) -> usize;
+  // fn create<T: Insertable>(conn: &PgConnection, item: T) -> Result<Self, Error> where Self: Sized;
+}
+
+#[cfg(test)]
+mod tests {
+  #[test]
+  fn it_works() {
+    assert_eq!(2 + 2, 4);
+  }
+
+  #[test]
+  fn db_fetch() {
+
+  }
+}
diff --git a/server/src/models.rs b/server/src/models.rs
new file mode 100644
index 00000000..cb5eaef7
--- /dev/null
+++ b/server/src/models.rs
@@ -0,0 +1,19 @@
+
+enum CommunityUserType {
+  CREATOR = 0,
+  MODERATOR = 1,
+  USER = 2
+}
+
+impl CommunityUserType {
+  fn from_u32(value: u32) -> CommunityUserType {
+    match value {
+      0 => CommunityUserType::CREATOR,
+      1 => CommunityUserType::MODERATOR,
+      2 => CommunityUserType::USER,
+      _ => panic!("Unknown value: {}", value),
+    }
+  }
+}
+
+
diff --git a/server/src/schema.rs b/server/src/schema.rs
new file mode 100644
index 00000000..a9f37009
--- /dev/null
+++ b/server/src/schema.rs
@@ -0,0 +1,36 @@
+table! {
+    community (id) {
+        id -> Int4,
+        name -> Varchar,
+        starttime -> Timestamp,
+    }
+}
+
+table! {
+    community_user (id) {
+        id -> Int4,
+        fedi_user_id -> Varchar,
+        community_id -> Nullable<Int4>,
+        community_user_type -> Int2,
+        starttime -> Timestamp,
+    }
+}
+
+table! {
+    user_ (id) {
+        id -> Int4,
+        name -> Varchar,
+        password_encrypted -> Varchar,
+        email -> Nullable<Varchar>,
+        icon -> Nullable<Bytea>,
+        starttime -> Timestamp,
+    }
+}
+
+joinable!(community_user -> community (community_id));
+
+allow_tables_to_appear_in_same_query!(
+    community,
+    community_user,
+    user_,
+);