Implement client send message endpoint

Fix state res and authorization to handle missing state_keys

priv/repo/migrations/20210830160818_create_initial_tables.exs

@@ -63,7 +63,7 @@ defmodule MatrixServer.Repo.Migrations.CreateInitialTables do
 
     create table(:devices) do
       add :device_id, :string, null: false
-      add :access_token, :string
+      add :access_token, :string, null: false
       add :display_name, :string
 
       add :account_id, references(:accounts, on_delete: :delete_all), null: false
@@ -72,5 +72,11 @@ defmodule MatrixServer.Repo.Migrations.CreateInitialTables do
     create index(:devices, [:device_id, :account_id], unique: true)
     create index(:devices, [:account_id])
     create index(:devices, [:access_token], unique: true)
+
+    create table(:device_transactions, primary_key: false) do
+      add :txn_id, :string, primary_key: true, null: false
+      add :device_id, references(:devices, on_delete: :delete_all), primary_key: true, null: false
+      add :event_id, :string, null: false
+    end
   end
 end

priv/repo/seeds.exs

@@ -1,12 +1,15 @@
-alias MatrixServer.{Repo, Account, Device}
+alias MatrixServer.{Repo, Account}
 
-Repo.insert!(%Account{
-  localpart: "chuck",
-  password_hash: Bcrypt.hash_pwd_salt("sneed")
-})
+account =
+  Repo.insert!(%Account{
+    localpart: "chuck",
+    password_hash: Bcrypt.hash_pwd_salt("sneed")
+  })
 
-Repo.insert(%Device{
+account
+|> Ecto.build_assoc(:devices,
   device_id: "android",
   display_name: "My Android",
-  localpart: "chuck"
-})
+  access_token: "sneed"
+)
+|> Repo.insert!()