package moderation

import (
	"context"
	"errors"
	"time"

	"github.com/tinode/chat/server/store/types"
)

const (
	SceneUserNickname      = "user_nickname"
	SceneUserSignature     = "user_signature"
	SceneGroupName         = "group_name"
	SceneGroupNickname     = "group_nickname"
	ScenePrivateMessage    = "private_message"
	SceneGroupMessage      = "group_message"
	SceneGroupAnnouncement = "group_announcement"
	SceneFeedPost          = "feed_post"
	SceneFeedComment       = "feed_comment"

	ActionAllow     = "allow"
	ActionBlock     = "block"
	ActionAuditOnly = "audit_only"
)

var (
	ErrRejected    = errors.New("content rejected")
	ErrUnavailable = errors.New("content review unavailable")
)

type Request struct {
	TenantID   types.TenantID
	TenantCode string
	Scene      string
	ActorID    types.Uid
	Topic      string
	Text       string
	TraceID    string
}

type ProviderResult struct {
	ProviderRequestID string
	RiskLevel         string
	RiskLabels        []string
	Summary           string
	Latency           time.Duration
}

type Result struct {
	RequestID         string
	Action            string
	RiskLevel         string
	RiskLabels        []string
	Provider          string
	ProviderRequestID string
	Latency           time.Duration
	BlockMessage      string
	Err               error
}

type Provider interface {
	Review(context.Context, string, string, string) (*ProviderResult, error)
}