package model

import (
	"time"
)

// Now returns the current Unix timestamp
func Now() int64 {
	return time.Now().Unix()
}

// TimeFromUnix converts Unix timestamp to time.Time
func TimeFromUnix(unix int64) time.Time {
	return time.Unix(unix, 0)
}

type Organization struct {
	ID        string
	Name      string
	Slug      string
	OrgType   string // bank, pe_vc, company
	CreatedAt time.Time
}

type Profile struct {
	ID             string
	Email          string
	FullName       string
	AvatarURL      string
	OrganizationID string
	Role           string // owner, admin, member, viewer
	PasswordHash   string
	CreatedAt      time.Time
	LastLogin      *time.Time
	BuyerGroup     string
	ViewAsBuyer    bool // Not persisted, set per-request from cookie
}

type Deal struct {
	ID                string
	OrganizationID    string
	Name              string
	Description       string
	TargetCompany     string
	Stage             string // pipeline, loi, initial_review, due_diligence, final_negotiation, closed, dead
	DealSize          float64
	Currency          string
	IOIDate           string
	LOIDate           string
	ExclusivityEnd    string
	ExpectedCloseDate string
	CloseProbability  int
	Industry          string
	BuyerCanComment   bool
	SellerCanComment  bool
	IsArchived        bool
	CreatedBy         string
	CreatedAt         time.Time
	UpdatedAt         time.Time
	// Computed
	FileCount int
}

type Folder struct {
	ID             string
	DealID         string
	ParentID       string
	Name           string
	Description    string
	SortOrder      int
	CreatedBy      string
	CreatedAt      time.Time
}

type File struct {
	ID          string
	DealID      string
	FolderID    string
	Name        string
	FileSize    int64
	MimeType    string
	Status      string // uploaded, processing, reviewed, flagged, archived
	StoragePath string
	UploadedBy  string
	CreatedAt   time.Time
}

type DiligenceRequest struct {
	ID            string
	DealID        string
	ItemNumber    string
	Section       string
	Description   string
	Priority      string // high, medium, low
	AtlasStatus   string // fulfilled, partial, missing, not_applicable
	AtlasNote     string
	Confidence    int
	BuyerComment  string
	SellerComment string
	BuyerGroup    string
	LinkedFileIDs       string
	IsBuyerSpecific     bool
	VisibleToBuyerGroup string
	CreatedBy           string
	CreatedAt     time.Time
	UpdatedAt     time.Time
}

type Contact struct {
	ID             string
	OrganizationID string
	FullName       string
	Email          string
	Phone          string
	Company        string
	Title          string
	ContactType    string // buyer, internal, advisor
	Tags           string
	Notes          string
	LastActivityAt *time.Time
	CreatedAt      time.Time
	// Computed
	DealNames []string
}

type DealActivity struct {
	ID           string
	OrganizationID string
	DealID       string
	UserID       string
	ActivityType string
	ResourceType string
	ResourceName string
	ResourceID   string
	Details          string
	BuyerGroup       string
	TimeSpentSeconds int
	CreatedAt        time.Time
	// Computed
	UserName string
	DealName string
}

type Session struct {
	Token     string
	UserID    string
	ExpiresAt time.Time
	CreatedAt time.Time
}

type FileComment struct {
	ID        string
	FileID    string
	DealID    string
	UserID    string
	Content   string
	CreatedAt time.Time
	UserName  string // computed
}

type Invite struct {
	Token     string
	OrgID     string
	Email     string
	Role      string
	InvitedBy string
	ExpiresAt time.Time
	UsedAt    *time.Time
	CreatedAt time.Time
}

// StageName returns human-readable stage name
func StageName(stage string) string {
	switch stage {
	case "prospect":
		return "Prospect"
	case "internal":
		return "Internal"
	case "initial_marketing":
		return "Initial Marketing"
	case "ioi":
		return "IOI"
	case "loi":
		return "LOI"
	case "closed":
		return "Closed"
	// Legacy stages (backward compat)
	case "pipeline":
		return "Prospect"
	case "initial_review":
		return "Initial Marketing"
	case "due_diligence":
		return "IOI"
	case "final_negotiation":
		return "LOI"
	case "dead":
		return "Dead"
	default:
		return stage
	}
}