-- Hosted mail domains and mailboxes (Stalwart provisioning)
CREATE TABLE mail_domains (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    name TEXT NOT NULL UNIQUE,
    status TEXT NOT NULL DEFAULT 'pending_verification',
    verification_token TEXT NOT NULL DEFAULT '',
    dkim_selector TEXT NOT NULL DEFAULT '',
    dkim_public_key TEXT NOT NULL DEFAULT '',
    stalwart_domain_id TEXT NOT NULL DEFAULT '',
    is_platform_domain BOOLEAN NOT NULL DEFAULT false,
    mx_verified_at TIMESTAMPTZ,
    txt_verified_at TIMESTAMPTZ,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX idx_mail_domains_status ON mail_domains(status);

CREATE TABLE mailboxes (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    domain_id UUID NOT NULL REFERENCES mail_domains(id) ON DELETE CASCADE,
    local_part TEXT NOT NULL,
    user_id UUID REFERENCES users(id) ON DELETE SET NULL,
    mail_account_id UUID REFERENCES mail_accounts(id) ON DELETE SET NULL,
    stalwart_account_id TEXT NOT NULL DEFAULT '',
    quota_bytes BIGINT NOT NULL DEFAULT 5368709120,
    status TEXT NOT NULL DEFAULT 'active',
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    UNIQUE(domain_id, local_part)
);

CREATE INDEX idx_mailboxes_user ON mailboxes(user_id);
CREATE INDEX idx_mailboxes_mail_account ON mailboxes(mail_account_id);

-- Migration projects (Google Workspace / Microsoft 365 transitions)
CREATE TABLE migration_projects (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    domain_id UUID REFERENCES mail_domains(id) ON DELETE SET NULL,
    name TEXT NOT NULL DEFAULT '',
    source_provider TEXT NOT NULL DEFAULT 'google',
    status TEXT NOT NULL DEFAULT 'draft',
    cutover_at TIMESTAMPTZ,
    delta_mode BOOLEAN NOT NULL DEFAULT false,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX idx_migration_projects_status ON migration_projects(status);

CREATE TABLE migration_invites (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    project_id UUID NOT NULL REFERENCES migration_projects(id) ON DELETE CASCADE,
    email TEXT NOT NULL,
    token TEXT NOT NULL UNIQUE,
    status TEXT NOT NULL DEFAULT 'invited',
    claimed_at TIMESTAMPTZ,
    user_id UUID REFERENCES users(id) ON DELETE SET NULL,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    UNIQUE(project_id, email)
);

CREATE INDEX idx_migration_invites_token ON migration_invites(token);
CREATE INDEX idx_migration_invites_email ON migration_invites(email);

CREATE TABLE migration_jobs (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    project_id UUID NOT NULL REFERENCES migration_projects(id) ON DELETE CASCADE,
    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    service TEXT NOT NULL,
    status TEXT NOT NULL DEFAULT 'pending',
    cursor_json JSONB NOT NULL DEFAULT '{}',
    stats_json JSONB NOT NULL DEFAULT '{}',
    error TEXT NOT NULL DEFAULT '',
    started_at TIMESTAMPTZ,
    completed_at TIMESTAMPTZ,
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    UNIQUE(project_id, user_id, service)
);

CREATE INDEX idx_migration_jobs_status ON migration_jobs(status);

CREATE TABLE migration_credentials (
    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    project_id UUID NOT NULL REFERENCES migration_projects(id) ON DELETE CASCADE,
    provider TEXT NOT NULL,
    encrypted_token BYTEA NOT NULL,
    scopes TEXT[] NOT NULL DEFAULT '{}',
    expires_at TIMESTAMPTZ,
    revoked_at TIMESTAMPTZ,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    UNIQUE(user_id, project_id, provider)
);

CREATE INDEX idx_migration_credentials_user ON migration_credentials(user_id);