-- 0019_add_email
-- Add email providers, outbox, and bot email bindings tables.

CREATE TABLE IF NOT EXISTS email_providers (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  name TEXT NOT NULL,
  provider TEXT NOT NULL,
  config JSONB NOT NULL DEFAULT '{}'::jsonb,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  CONSTRAINT email_providers_name_unique UNIQUE (name)
);

CREATE TABLE IF NOT EXISTS bot_email_bindings (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  bot_id UUID NOT NULL REFERENCES bots(id) ON DELETE CASCADE,
  email_provider_id UUID NOT NULL REFERENCES email_providers(id) ON DELETE CASCADE,
  email_address TEXT NOT NULL,
  can_read BOOLEAN NOT NULL DEFAULT TRUE,
  can_write BOOLEAN NOT NULL DEFAULT TRUE,
  can_delete BOOLEAN NOT NULL DEFAULT FALSE,
  config JSONB NOT NULL DEFAULT '{}'::jsonb,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  CONSTRAINT bot_email_bindings_unique UNIQUE (bot_id, email_provider_id)
);

CREATE INDEX IF NOT EXISTS idx_bot_email_bindings_bot_id ON bot_email_bindings(bot_id);
CREATE INDEX IF NOT EXISTS idx_bot_email_bindings_provider_id ON bot_email_bindings(email_provider_id);

CREATE TABLE IF NOT EXISTS email_outbox (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  provider_id UUID NOT NULL REFERENCES email_providers(id) ON DELETE CASCADE,
  bot_id UUID NOT NULL REFERENCES bots(id) ON DELETE CASCADE,
  message_id TEXT NOT NULL DEFAULT '',
  from_address TEXT NOT NULL DEFAULT '',
  to_addresses JSONB NOT NULL DEFAULT '[]'::jsonb,
  subject TEXT NOT NULL DEFAULT '',
  body_text TEXT NOT NULL DEFAULT '',
  body_html TEXT NOT NULL DEFAULT '',
  attachments JSONB NOT NULL DEFAULT '[]'::jsonb,
  status TEXT NOT NULL DEFAULT 'pending' CHECK (status IN ('pending', 'sent', 'failed')),
  error TEXT NOT NULL DEFAULT '',
  sent_at TIMESTAMPTZ,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS idx_email_outbox_provider_id ON email_outbox(provider_id);
CREATE INDEX IF NOT EXISTS idx_email_outbox_bot_id ON email_outbox(bot_id, created_at DESC);