package domain

import "time"

type Protocol string

const (
	ProtocolOpenAI    Protocol = "openai"
	ProtocolAnthropic Protocol = "anthropic"
)

type Principal struct {
	KeyID     string
	TenantID  string
	ProjectID string
	Scopes    []string
}

type Provider struct {
	ID       string
	Protocol Protocol
	BaseURL  string
	APIKey   string
}

type Route struct {
	Provider      Provider
	UpstreamModel string
	Priority      int
	Weight        int
}

type Model struct {
	ID                              string
	OwnedBy                         string
	InputPriceMicrosPerMillion      int64
	OutputPriceMicrosPerMillion     int64
	CacheReadPriceMicrosPerMillion  int64
	CacheWritePriceMicrosPerMillion int64
	Routes                          []Route
}

type Usage struct {
	InputTokens              int64 `json:"input_tokens,omitempty"`
	OutputTokens             int64 `json:"output_tokens,omitempty"`
	TotalTokens              int64 `json:"total_tokens,omitempty"`
	CacheCreationInputTokens int64 `json:"cache_creation_input_tokens,omitempty"`
	CacheReadInputTokens     int64 `json:"cache_read_input_tokens,omitempty"`
}

type UsageEvent struct {
	RequestID     string    `json:"request_id"`
	KeyID         string    `json:"key_id"`
	TenantID      string    `json:"tenant_id"`
	ProjectID     string    `json:"project_id"`
	PublicModel   string    `json:"public_model"`
	ProviderID    string    `json:"provider_id,omitempty"`
	UpstreamModel string    `json:"upstream_model,omitempty"`
	Protocol      Protocol  `json:"protocol"`
	Stream        bool      `json:"stream"`
	StatusCode    int       `json:"status_code"`
	Success       bool      `json:"success"`
	ErrorType     string    `json:"error_type,omitempty"`
	Attempts      int       `json:"attempts"`
	StartedAt     time.Time `json:"started_at"`
	DurationMS    int64     `json:"duration_ms"`
	Usage         Usage     `json:"usage"`
}

// LimitPolicy is the immutable runtime view of a project's commercial limits.
// Zero values disable the corresponding limit.
type LimitPolicy struct {
	TenantID           string `json:"tenant_id"`
	ProjectID          string `json:"project_id"`
	RequestsPerMinute  int64  `json:"requests_per_minute"`
	TokensPerMinute    int64  `json:"tokens_per_minute"`
	Concurrent         int64  `json:"concurrent_requests"`
	MonthlySpendMicros int64  `json:"monthly_spend_micros"`
}