package models

// API Permissions: bitmask of scopes granted to a given API key.
// Distinct from OrganizationPermission (which gates UI users) and
// AdminPermission (which gates platform admins). uint64 leaves room
// for ~50 more scopes before we have to widen the column.
const (
	// Read permissions
	APIPermReadEmails    uint64 = 1 << iota // Read email accounts
	APIPermReadCampaigns                    // Read campaigns + sequences
	APIPermReadContacts                     // Read contacts, notes, activities
	APIPermReadUnibox                       // Read unified inbox
	APIPermReadAnalytics                    // Read analytics + statistics

	// Write permissions
	APIPermWriteEmails    // Modify email accounts
	APIPermWriteCampaigns // Create/modify campaigns + sequences
	APIPermWriteContacts  // Create/modify contacts, notes, activities
	APIPermWriteUnibox    // Mark as seen, reply, etc.

	// Bulk operations (separate so a key can read+write without bulk power)
	APIPermBulkContacts  // Bulk contact import/export/delete
	APIPermBulkCampaigns // Bulk campaign operations

	// Realtime + integrations
	APIPermRealtimeSubscribe // Subscribe to realtime events
	APIPermWebhooks          // Manage webhook endpoints (reserved)

	// Self-service
	APIPermAPIKeys // Create / list / revoke API keys via the API

	// Campaign lifecycle (separated from WriteCampaigns since starting
	// a campaign actually sends mail and is materially different from
	// editing its draft).
	APIPermSendCampaigns

	// Templates + CRM are first-class scopes — they're useful to expose
	// without granting full campaign write.
	APIPermReadTemplates
	APIPermWriteTemplates
	APIPermReadCRM
	APIPermWriteCRM

	// Audit trail
	APIPermReadAuditLogs
)

// AllAPIPermissionsMask is the OR of every defined permission bit.
// Used to reject CreateAPIKey requests that include unknown bits, so
// a future bit can't be granted accidentally by a stale client.
const AllAPIPermissionsMask uint64 = APIPermReadEmails | APIPermReadCampaigns |
	APIPermReadContacts | APIPermReadUnibox | APIPermReadAnalytics |
	APIPermWriteEmails | APIPermWriteCampaigns | APIPermWriteContacts |
	APIPermWriteUnibox |
	APIPermBulkContacts | APIPermBulkCampaigns |
	APIPermRealtimeSubscribe | APIPermWebhooks |
	APIPermAPIKeys |
	APIPermSendCampaigns |
	APIPermReadTemplates | APIPermWriteTemplates |
	APIPermReadCRM | APIPermWriteCRM |
	APIPermReadAuditLogs

// Preset permission sets surfaced via GET /api-keys/permissions so a
// caller can grant a sane default without picking bits by hand.
var (
	APIPermReadOnly uint64 = APIPermReadEmails | APIPermReadCampaigns |
		APIPermReadContacts | APIPermReadUnibox | APIPermReadAnalytics |
		APIPermReadTemplates | APIPermReadCRM | APIPermReadAuditLogs

	APIPermFullAccess uint64 = APIPermReadOnly |
		APIPermWriteEmails | APIPermWriteCampaigns | APIPermWriteContacts |
		APIPermWriteUnibox |
		APIPermBulkContacts | APIPermBulkCampaigns |
		APIPermSendCampaigns |
		APIPermWriteTemplates | APIPermWriteCRM |
		APIPermRealtimeSubscribe | APIPermWebhooks | APIPermAPIKeys
)

type APIPermission struct {
	Name        string `json:"name"`
	Value       uint64 `json:"value"`
	Description string `json:"description"`
	Category    string `json:"category"` // read, write, bulk, special
}

var AllAPIPermissions = []APIPermission{
	{"READ_EMAILS", APIPermReadEmails, "View email accounts and settings", "read"},
	{"READ_CAMPAIGNS", APIPermReadCampaigns, "View campaigns and sequences", "read"},
	{"READ_CONTACTS", APIPermReadContacts, "View contact lists, notes, and activities", "read"},
	{"READ_UNIBOX", APIPermReadUnibox, "Access unified inbox", "read"},
	{"READ_ANALYTICS", APIPermReadAnalytics, "View analytics and statistics", "read"},
	{"READ_TEMPLATES", APIPermReadTemplates, "View reply templates", "read"},
	{"READ_CRM", APIPermReadCRM, "View pipelines, deals, and CRM tasks", "read"},
	{"READ_AUDIT_LOGS", APIPermReadAuditLogs, "View organization audit logs", "read"},
	{"WRITE_EMAILS", APIPermWriteEmails, "Modify email account settings", "write"},
	{"WRITE_CAMPAIGNS", APIPermWriteCampaigns, "Create and modify campaigns and sequences", "write"},
	{"WRITE_CONTACTS", APIPermWriteContacts, "Create and modify contacts, notes, and activities", "write"},
	{"WRITE_UNIBOX", APIPermWriteUnibox, "Mark emails as read/unread and send replies", "write"},
	{"WRITE_TEMPLATES", APIPermWriteTemplates, "Create and modify reply templates", "write"},
	{"WRITE_CRM", APIPermWriteCRM, "Create and modify pipelines, deals, and CRM tasks", "write"},
	{"SEND_CAMPAIGNS", APIPermSendCampaigns, "Start and stop campaigns (sends real mail)", "write"},
	{"BULK_CONTACTS", APIPermBulkContacts, "Bulk import/export/delete contacts", "bulk"},
	{"BULK_CAMPAIGNS", APIPermBulkCampaigns, "Bulk campaign operations", "bulk"},
	{"REALTIME_SUBSCRIBE", APIPermRealtimeSubscribe, "Subscribe to realtime events", "special"},
	{"WEBHOOKS", APIPermWebhooks, "Manage webhook endpoints", "special"},
	{"API_KEYS", APIPermAPIKeys, "Create and manage API keys", "special"},
}

// HasAPIPermission reports whether the bitmask grants every bit in `required`.
func HasAPIPermission(permissions uint64, required uint64) bool {
	return permissions&required == required
}

// HasAnyAPIPermission reports whether the bitmask grants at least one bit in `required`.
func HasAnyAPIPermission(permissions uint64, required uint64) bool {
	return permissions&required != 0
}