class CreateCoreTables < ActiveRecord::Migration[8.1]
  def change
    enable_extension "citext"
    enable_extension "pgcrypto"

    create_table :users do |t|
      t.citext :email, null: false, index: { unique: true }
      t.string :display_name
      t.string :color
      t.datetime :last_seen_at
      t.timestamps
    end

    create_table :sessions do |t|
      t.references :user, null: false, foreign_key: { on_delete: :cascade }
      t.string :user_agent
      t.string :ip_address
      t.datetime :last_active_at
      t.timestamps
    end

    create_table :documents, id: :uuid do |t|
      t.references :owner, null: false, foreign_key: { to_table: :users, on_delete: :cascade }
      t.string :title, null: false
      t.text :content, null: false # the DocumentState JSON, same as inside a .num file
      t.integer :version, null: false, default: 1
      t.references :updated_by, foreign_key: { to_table: :users, on_delete: :nullify }
      t.datetime :content_updated_at, null: false
      # simple edit lock until live collaboration exists (concept, phase 3)
      t.string :lock_holder
      t.string :lock_holder_name
      t.datetime :lock_expires_at
      t.timestamps
    end

    create_table :share_links do |t|
      t.references :document, type: :uuid, null: false, foreign_key: { on_delete: :cascade }
      t.integer :role, null: false
      t.string :token, null: false, index: { unique: true }
      t.references :created_by, null: false, foreign_key: { to_table: :users, on_delete: :cascade }
      t.datetime :revoked_at
      t.timestamps
    end

    create_table :document_memberships do |t|
      t.references :document, type: :uuid, null: false, foreign_key: { on_delete: :cascade }
      t.references :user, null: false, foreign_key: { on_delete: :cascade }
      t.integer :role, null: false
      t.integer :source, null: false
      t.references :share_link, foreign_key: { on_delete: :cascade }
      t.datetime :last_opened_at
      t.timestamps
      t.index [ :document_id, :user_id ], unique: true
    end

    create_table :magic_links do |t|
      t.citext :email, null: false, index: true
      t.string :token_digest, null: false, index: { unique: true }
      t.string :code_digest, null: false
      t.integer :purpose, null: false, default: 0
      t.references :document, type: :uuid, foreign_key: { on_delete: :cascade }
      t.integer :role
      t.references :invited_by, foreign_key: { to_table: :users, on_delete: :cascade }
      t.string :return_to
      t.integer :failed_attempts, null: false, default: 0
      t.datetime :expires_at, null: false
      t.datetime :used_at
      t.timestamps
    end
  end
end