-- 权限 2.0 完整闭环：审批策略、执行状态、结构化审计与历史租户归属

-- 该迁移可独立执行：兼容仅执行过 000_full_init.sql、或未执行 008 的旧数据库。
CREATE TABLE IF NOT EXISTS tenant_members (
    tenant_id TEXT NOT NULL,
    user_id TEXT NOT NULL,
    role TEXT NOT NULL DEFAULT 'member',
    status TEXT NOT NULL DEFAULT 'active',
    invited_by TEXT,
    joined_at TEXT,
    expires_at TEXT,
    PRIMARY KEY (tenant_id, user_id)
);
CREATE INDEX IF NOT EXISTS idx_tenant_members_user ON tenant_members(user_id, status);
CREATE INDEX IF NOT EXISTS idx_tenant_members_tenant ON tenant_members(tenant_id, status);
INSERT INTO tenant_members (tenant_id, user_id, role, status, joined_at)
SELECT COALESCE(u.tenant_id, 'default'), u.id,
       CASE WHEN u.role='admin' OR COALESCE(u.protected, 0)=1 THEN 'owner' ELSE 'member' END,
       'active', COALESCE(u.create_time, NOW()::text)
FROM users u
ON CONFLICT (tenant_id, user_id) DO NOTHING;

CREATE TABLE IF NOT EXISTS resource_access_requests (
    id TEXT PRIMARY KEY,
    tenant_id TEXT NOT NULL DEFAULT 'default',
    resource_type TEXT NOT NULL,
    resource_id TEXT NOT NULL,
    applicant_id TEXT NOT NULL,
    principal_type TEXT NOT NULL DEFAULT 'user',
    principal_id TEXT NOT NULL,
    requested_permissions TEXT NOT NULL DEFAULT '[]',
    reason TEXT,
    approval_id TEXT,
    status TEXT NOT NULL DEFAULT 'pending',
    expires_at TEXT,
    created_at TEXT NOT NULL DEFAULT to_char(now(), 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"'),
    decided_at TEXT,
    decided_by TEXT
);
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS action TEXT;
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS requested_permissions TEXT NOT NULL DEFAULT '[]';
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS reason TEXT;
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS tenant_id TEXT;
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS expires_at TEXT;
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS decided_by TEXT;
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS decided_at TEXT;
ALTER TABLE approval_steps ADD COLUMN IF NOT EXISTS approver_type TEXT NOT NULL DEFAULT 'user';
ALTER TABLE acls ADD COLUMN IF NOT EXISTS tenant_id TEXT;
ALTER TABLE acls ADD COLUMN IF NOT EXISTS granted_by TEXT;
ALTER TABLE acls ADD COLUMN IF NOT EXISTS source_request_id TEXT;
ALTER TABLE acls ADD COLUMN IF NOT EXISTS expires_at TEXT;
ALTER TABLE acls ADD COLUMN IF NOT EXISTS revoked_at TEXT;
ALTER TABLE datasets ADD COLUMN IF NOT EXISTS tenant_id TEXT;
ALTER TABLE models ADD COLUMN IF NOT EXISTS tenant_id TEXT;
ALTER TABLE trained_models ADD COLUMN IF NOT EXISTS tenant_id TEXT;
ALTER TABLE eval_tasks ADD COLUMN IF NOT EXISTS tenant_id TEXT;

ALTER TABLE approval_templates ADD COLUMN IF NOT EXISTS tenant_id TEXT;
ALTER TABLE approval_templates ADD COLUMN IF NOT EXISTS action TEXT;
ALTER TABLE approval_templates ADD COLUMN IF NOT EXISTS resource_type TEXT;
ALTER TABLE approval_templates ADD COLUMN IF NOT EXISTS scope TEXT NOT NULL DEFAULT 'tenant';
ALTER TABLE approval_templates ADD COLUMN IF NOT EXISTS status TEXT NOT NULL DEFAULT 'active';
ALTER TABLE approval_templates ADD COLUMN IF NOT EXISTS created_by TEXT;
ALTER TABLE approval_templates ADD COLUMN IF NOT EXISTS updated_at TEXT;
CREATE INDEX IF NOT EXISTS idx_approval_templates_match
    ON approval_templates(tenant_id, action, resource_type, status);

ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS execution_status TEXT NOT NULL DEFAULT 'pending';
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS execution_error TEXT;
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS executed_at TEXT;
ALTER TABLE approval_instances ADD COLUMN IF NOT EXISTS executed_by TEXT;
CREATE INDEX IF NOT EXISTS idx_approval_instances_execution
    ON approval_instances(status, execution_status, action, resource_type, resource_id);

ALTER TABLE resource_access_requests ADD COLUMN IF NOT EXISTS cancelled_at TEXT;
ALTER TABLE resource_access_requests ADD COLUMN IF NOT EXISTS cancelled_by TEXT;
CREATE INDEX IF NOT EXISTS idx_resource_access_requests_expiry
    ON resource_access_requests(status, expires_at);

ALTER TABLE projects ADD COLUMN IF NOT EXISTS deleted_at TEXT;
ALTER TABLE projects ADD COLUMN IF NOT EXISTS deleted_by TEXT;
CREATE INDEX IF NOT EXISTS idx_projects_active_tenant ON projects(tenant_id, status, deleted_at);

ALTER TABLE tenants ADD COLUMN IF NOT EXISTS deleted_at TEXT;
ALTER TABLE tenants ADD COLUMN IF NOT EXISTS deleted_by TEXT;
CREATE INDEX IF NOT EXISTS idx_tenants_active ON tenants(status, deleted_at);

ALTER TABLE data_convert_tasks ADD COLUMN IF NOT EXISTS created_by TEXT;
ALTER TABLE data_convert_tasks ADD COLUMN IF NOT EXISTS tenant_id TEXT NOT NULL DEFAULT 'default';
CREATE INDEX IF NOT EXISTS idx_data_convert_tasks_tenant ON data_convert_tasks(tenant_id, deleted_at);

ALTER TABLE audit_logs ADD COLUMN IF NOT EXISTS result TEXT NOT NULL DEFAULT 'success';
ALTER TABLE audit_logs ADD COLUMN IF NOT EXISTS reason TEXT;
ALTER TABLE audit_logs ADD COLUMN IF NOT EXISTS request_id TEXT;
ALTER TABLE audit_logs ADD COLUMN IF NOT EXISTS session_id TEXT;
ALTER TABLE audit_logs ADD COLUMN IF NOT EXISTS metadata TEXT;
CREATE INDEX IF NOT EXISTS idx_audit_request ON audit_logs(request_id);
CREATE INDEX IF NOT EXISTS idx_audit_result ON audit_logs(result, time);

-- 历史资源按创建者租户补齐归属。无法识别的资源保留 default，后续由管理员复核。
UPDATE datasets d
SET tenant_id = COALESCE(u.tenant_id, 'default')
FROM users u
WHERE d.created_by = u.id AND (d.tenant_id IS NULL OR d.tenant_id = '');
UPDATE models m
SET tenant_id = COALESCE(u.tenant_id, 'default')
FROM users u
WHERE m.created_by = u.id AND (m.tenant_id IS NULL OR m.tenant_id = '');
UPDATE trained_models m
SET tenant_id = COALESCE(u.tenant_id, 'default')
FROM users u
WHERE m.created_by = u.id AND (m.tenant_id IS NULL OR m.tenant_id = '');
UPDATE eval_tasks e
SET tenant_id = COALESCE(u.tenant_id, 'default')
FROM users u
WHERE e.created_by = u.id AND (e.tenant_id IS NULL OR e.tenant_id = '');