Introduce backend for reports

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

priv/repo/migrations/20190712125833_create_reports.exs

@@ -0,0 +1,33 @@
+defmodule Mobilizon.Repo.Migrations.CreateReports do
+  use Ecto.Migration
+  alias Mobilizon.Reports.ReportStateEnum
+
+  def up do
+    ReportStateEnum.create_type()
+
+    create table(:reports) do
+      add(:content, :string)
+      add(:status, ReportStateEnum.type(), default: "open", null: false)
+      add(:uri, :string, null: false)
+
+      add(:reported_id, references(:actors, on_delete: :delete_all), null: false)
+      add(:reporter_id, references(:actors, on_delete: :delete_all), null: false)
+      add(:manager_id, references(:actors, on_delete: :delete_all), null: true)
+      add(:event_id, references(:events, on_delete: :delete_all), null: true)
+
+      timestamps()
+    end
+
+    create table(:reports_comments, primary_key: false) do
+      add(:report_id, references(:reports, on_delete: :delete_all), null: false)
+      add(:comment_id, references(:comments, on_delete: :delete_all), null: false)
+    end
+  end
+
+  def down do
+    drop(table(:reports_comments))
+    drop(table(:reports))
+
+    ReportStateEnum.drop_type()
+  end
+end

priv/repo/migrations/20190712132438_create_report_notes.exs

@@ -0,0 +1,13 @@
+defmodule Mobilizon.Repo.Migrations.CreateReportNotes do
+  use Ecto.Migration
+
+  def change do
+    create table(:report_notes) do
+      add(:content, :string, null: false)
+      add(:moderator_id, references(:actors, on_delete: :delete_all), null: false)
+      add(:report_id, references(:reports, on_delete: :delete_all), null: false)
+
+      timestamps()
+    end
+  end
+end

priv/repo/migrations/20190718122556_create_admin_action_logs.exs

@@ -0,0 +1,15 @@
+defmodule Mobilizon.Repo.Migrations.CreateAdminActionLogs do
+  use Ecto.Migration
+
+  def change do
+    create table(:admin_action_logs) do
+      add(:action, :string, null: false)
+      add(:target_type, :string, null: false)
+      add(:target_id, :int, null: false)
+      add(:changes, :map)
+      add(:actor_id, references(:actors, on_delete: :nilify_all), null: false)
+
+      timestamps()
+    end
+  end
+end