package domain

import (
	"errors"
	"time"
)

var (
	ErrNotFound         = errors.New("scout not found")
	ErrForbidden        = errors.New("scout forbidden")
	ErrValidation       = errors.New("scout validation")
	ErrNoCrawlerSession = errors.New("crawler session required when dev_mode enabled")
	ErrTopicRemoved     = errors.New("ScoutTopic CRUD removed")
	ErrHasProducts      = errors.New("brand has products; remove products first")
)

func NowNano() int64 { return time.Now().UTC().UnixNano() }

const (
	PathAPI     = "api"
	PathCrawler = "crawler"

	OutreachNew       = "new"
	OutreachDrafted   = "drafted"
	OutreachPublished = "published"
	OutreachSkipped   = "skipped"
	OutreachQueued    = "queued"

	ModeProduct  = "product"
	ModeTheme    = "theme"
	ModeActivity = "activity"

	ClassificationSeekingHelp           = "seeking_help"
	ClassificationSeekingRecommendation = "seeking_recommendation"
	ClassificationProviderOffer         = "provider_offer"
	ClassificationDiscussion            = "discussion"
	ClassificationAsking                = "asking"
	ClassificationAnnouncement          = "announcement"
	ClassificationNoise                 = "noise"
)

type Brand struct {
	ID             string `bson:"_id" json:"id"`
	OwnerUID       int64  `bson:"owner_uid" json:"owner_uid"`
	DisplayName    string `bson:"display_name" json:"display_name"`
	Brief          string `bson:"brief" json:"brief"`
	TargetAudience string `bson:"target_audience,omitempty" json:"target_audience,omitempty"`
	Goals          string `bson:"goals,omitempty" json:"goals,omitempty"`
	// Learning — growth-loop 資產複利
	LearningSummary       string `bson:"learning_summary,omitempty" json:"learning_summary,omitempty"`
	LearningVersion       int    `bson:"learning_version,omitempty" json:"learning_version,omitempty"`
	LearnedFromPostsCount int    `bson:"learned_from_posts_count,omitempty" json:"learned_from_posts_count,omitempty"`
	LastLearnedAt         int64  `bson:"last_learned_at,omitempty" json:"last_learned_at,omitempty"`
	CreatedAt             int64  `bson:"created_at" json:"created_at"`
	UpdatedAt             int64  `bson:"updated_at" json:"updated_at"`
}

type Product struct {
	ID             string   `bson:"_id" json:"id"`
	OwnerUID       int64    `bson:"owner_uid" json:"owner_uid"`
	BrandID        string   `bson:"brand_id" json:"brand_id"`
	Label          string   `bson:"label" json:"label"`
	ProductContext string   `bson:"product_context" json:"product_context"`
	MatchTags      []string `bson:"match_tags" json:"match_tags"`
	PainPoints     []string `bson:"pain_points" json:"pain_points"`
	PlacementURL   string   `bson:"placement_url,omitempty" json:"placement_url,omitempty"`
	CreatedAt      int64    `bson:"created_at" json:"created_at"`
	UpdatedAt      int64    `bson:"updated_at" json:"updated_at"`
}

type ActiveBrand struct {
	OwnerUID  int64  `bson:"_id" json:"owner_uid"`
	BrandID   string `bson:"brand_id" json:"brand_id"`
	UpdatedAt int64  `bson:"updated_at" json:"updated_at"`
}

type RunBrief struct {
	Intent         string   `json:"intent"`
	Mode           string   `json:"mode"`
	BrandID        string   `json:"brand_id,omitempty"`
	ProductID      string   `json:"product_id,omitempty"`
	ProductLabel   string   `json:"product_label,omitempty"`
	Pains          []string `json:"pains"`
	Tags           []string `json:"tags"`
	Periphery      []string `json:"periphery"`
	ScanTerms      []string `json:"scan_terms"`
	PlacementNote  string   `json:"placement_note,omitempty"`
	ResponseStance string   `json:"response_stance,omitempty"`
	ThemeKey       string   `json:"theme_key,omitempty"`
	ThemeLabel     string   `json:"theme_label,omitempty"`
	ProductContext string   `json:"product_context,omitempty"`
}

type Post struct {
	ID                  string `bson:"_id" json:"id"`
	ExternalID          string `bson:"external_id,omitempty" json:"external_id,omitempty"`
	Permalink           string `bson:"permalink,omitempty" json:"permalink,omitempty"`
	OwnerUID            int64  `bson:"owner_uid" json:"owner_uid"`
	BrandID             string `bson:"brand_id,omitempty" json:"brand_id,omitempty"`
	Author              string `bson:"author" json:"author"`
	Text                string `bson:"text" json:"text"`
	SearchTag           string `bson:"search_tag" json:"search_tag"`
	Opportunity         string `bson:"opportunity" json:"opportunity"`
	OutreachStatus      string `bson:"outreach_status" json:"outreach_status"`
	DraftText           string `bson:"draft_text,omitempty" json:"draft_text,omitempty"`
	OutboxID            string `bson:"outbox_id,omitempty" json:"outbox_id,omitempty"`
	Score               int    `bson:"score" json:"score"`
	Classification      string `bson:"classification,omitempty" json:"classification,omitempty"`
	MatchedProductID    string `bson:"matched_product_id,omitempty" json:"matched_product_id,omitempty"`
	MatchedProductLabel string `bson:"matched_product_label,omitempty" json:"matched_product_label,omitempty"`
	MatchReason         string `bson:"match_reason,omitempty" json:"match_reason,omitempty"`
	ScoutMode           string `bson:"scout_mode,omitempty" json:"scout_mode,omitempty"`
	IntentSnippet       string `bson:"intent_snippet,omitempty" json:"intent_snippet,omitempty"`
	ThemeKey            string `bson:"theme_key,omitempty" json:"theme_key,omitempty"`
	ThemeLabel          string `bson:"theme_label,omitempty" json:"theme_label,omitempty"`
	ScanPath            string `bson:"scan_path,omitempty" json:"scan_path,omitempty"` // api|crawler
	CreatedAt           int64  `bson:"created_at" json:"created_at"`
}

type Homework struct {
	ThemeKey   string   `bson:"_id" json:"theme_key"`
	OwnerUID   int64    `bson:"owner_uid" json:"owner_uid"`
	ThemeLabel string   `bson:"theme_label" json:"theme_label"`
	Purpose    string   `bson:"purpose" json:"purpose"`
	Brief      RunBrief `bson:"brief" json:"brief"`
	CreatedAt  int64    `bson:"created_at" json:"created_at"`
}

type CrawlerSession struct {
	OwnerUID        int64  `bson:"_id" json:"owner_uid"`
	StorageStateEnc string `bson:"storage_state_enc" json:"storage_state_enc"`
	UpdatedAt       int64  `bson:"updated_at" json:"updated_at"`
	ExpiresAt       int64  `bson:"expires_at" json:"expires_at"`
}

type ImportDraft struct {
	Label          string   `json:"label"`
	ProductContext string   `json:"product_context"`
	PainPoints     []string `json:"pain_points"`
	MatchTags      []string `json:"match_tags"`
	PlacementURL   string   `json:"placement_url"`
	SourceNote     string   `json:"source_note"`
}
