package growth

import "time"

const (
	CatalogVersion   = "1405.1"
	AnalyticsVersion = "1.0.0"

	MinBaselineObservations = 4
	MinBaselineSessions     = 100
	MaterialChangeBPS       = 2_000
	MinSimilarityBPS        = 6_000
)

type Confidence string

const (
	ConfidenceHigh             Confidence = "HIGH"
	ConfidenceMedium           Confidence = "MEDIUM"
	ConfidenceInsufficientData Confidence = "INSUFFICIENT_DATA"
)

type SuppressionReason string

const (
	SuppressionInsufficientObservations     SuppressionReason = "INSUFFICIENT_BASELINE_OBSERVATIONS"
	SuppressionInsufficientBaselineSessions SuppressionReason = "INSUFFICIENT_BASELINE_SESSIONS"
	SuppressionInsufficientHistory          SuppressionReason = "INSUFFICIENT_HISTORY"
	SuppressionInsufficientCohort           SuppressionReason = "INSUFFICIENT_COHORT"
	SuppressionTerminalScope                SuppressionReason = "TERMINAL_SCOPE_UNSUPPORTED"
)

type DailyPoint struct {
	Date             time.Time `json:"date"`
	SessionCount     int64     `json:"sessionCount"`
	PaidSessionCount int64     `json:"paidSessionCount"`
	PaidAmountRial   int64     `json:"paidAmountRial"`
	EventIDs         []string  `json:"eventIds,omitempty"`
}

type EventKind string

const (
	EventOfficial   EventKind = "OFFICIAL"
	EventCommercial EventKind = "COMMERCIAL"
)

type Event struct {
	ID         string    `json:"id"`
	TitleFA    string    `json:"titleFa"`
	StartDate  time.Time `json:"startDate"`
	EndDate    time.Time `json:"endDate"`
	Family     string    `json:"family"`
	Tags       []string  `json:"tags"`
	Source     string    `json:"source"`
	Categories []string  `json:"categories"`
	Kind       EventKind `json:"kind"`
}

type EventEffect struct {
	EvidenceID           string            `json:"evidenceId"`
	EventID              string            `json:"eventId"`
	Eligible             bool              `json:"eligible"`
	SuppressionReason    SuppressionReason `json:"suppressionReason,omitempty"`
	ObservationCount     int               `json:"observationCount"`
	BaselineSessionCount int64             `json:"baselineSessionCount"`
	BaselinePaidSessions int64             `json:"baselinePaidSessions"`
	BaselineAmountRial   int64             `json:"baselineAmountRial"`
	ActualSessionCount   int64             `json:"actualSessionCount"`
	ActualPaidSessions   int64             `json:"actualPaidSessions"`
	ActualAmountRial     int64             `json:"actualAmountRial"`
	SessionUpliftBPS     int64             `json:"sessionUpliftBps"`
	PaidSessionUpliftBPS int64             `json:"paidSessionUpliftBps"`
	AmountUpliftBPS      int64             `json:"amountUpliftBps"`
	MaterialWin          bool              `json:"materialWin"`
	MaterialDecline      bool              `json:"materialDecline"`
}

type EventMatch struct {
	Event      Event  `json:"event"`
	ScoreBPS   int64  `json:"scoreBps"`
	MatchBasis string `json:"matchBasis"`
}

type Range struct {
	P10 int64 `json:"p10"`
	P50 int64 `json:"p50"`
	P90 int64 `json:"p90"`
}

type ForecastPoint struct {
	Date               time.Time `json:"date"`
	BaselineSessions   int64     `json:"baselineSessions"`
	BaselineAmountRial int64     `json:"baselineAmountRial"`
	PaidSessions       Range     `json:"paidSessions"`
	PaidAmountRial     Range     `json:"paidAmountRial"`
	EventIDs           []string  `json:"eventIds,omitempty"`
}

type BacktestResult struct {
	Origins             int   `json:"origins"`
	SessionMAPEBPS      int64 `json:"sessionMapeBps"`
	AmountMAPEBPS       int64 `json:"amountMapeBps"`
	IntervalCoverageBPS int64 `json:"intervalCoverageBps"`
}

type Forecast struct {
	StartDate         time.Time         `json:"startDate"`
	HorizonDays       int               `json:"horizonDays"`
	Confidence        Confidence        `json:"confidence"`
	SuppressionReason SuppressionReason `json:"suppressionReason,omitempty"`
	Points            []ForecastPoint   `json:"points"`
	Backtest          BacktestResult    `json:"backtest"`
}

type Opportunity struct {
	EvidenceID           string    `json:"evidenceId"`
	EventID              string    `json:"eventId"`
	EventTitleFA         string    `json:"eventTitleFa"`
	Date                 time.Time `json:"date"`
	SimilarityBPS        int64     `json:"similarityBps"`
	ExpectedSessions     Range     `json:"expectedSessions"`
	ExpectedAmountRial   Range     `json:"expectedAmountRial"`
	HistoricalEvidenceID string    `json:"historicalEvidenceId"`
}

type Risk struct {
	EvidenceID         string    `json:"evidenceId"`
	Date               time.Time `json:"date"`
	SessionDeclineBPS  int64     `json:"sessionDeclineBps"`
	AmountDeclineBPS   int64     `json:"amountDeclineBps"`
	ExpectedSessions   Range     `json:"expectedSessions"`
	ExpectedAmountRial Range     `json:"expectedAmountRial"`
}

type EvidenceBundle struct {
	Opportunities []Opportunity `json:"opportunities"`
	Risks         []Risk        `json:"risks"`
}

type CampaignBrief struct {
	HeadlineFA    string   `json:"headlineFa"`
	GuidanceFA    string   `json:"guidanceFa"`
	OfferFA       string   `json:"offerFa"`
	PreparationFA string   `json:"preparationFa"`
	LimitationFA  string   `json:"limitationFa"`
	EvidenceIDs   []string `json:"evidenceIds"`
}