package pickup

import (
	"errors"
	"time"

	"gorm.io/datatypes"
)

// 提号状态
const (
	StatusPickingUp = "picking_up"
	StatusCompleted = "completed"
	StatusCancelled = "cancelled"

	AccountSourceInternal                = "internal"
	AccountSourceExternalPlatformManaged = "external_platform_managed"
	ListingSourceExternal                = "external"
	ListingSourceInternal                = "internal"
	SettlementModeOwnerWallet            = "owner_wallet"
	SettlementModePlatformManaged        = "platform_managed"
	OfflineSettlementStatusNone          = "none"
	OfflineSettlementStatusPending       = "pending"
	OfflineSettlementStatusSettled       = "settled"
	FinancialAdjustmentStatusSettled     = "settled"
	FinancialAdjustmentStatusPending     = "pending"
	FinancialAdjustmentStatusRecovery    = "recovery_pending"

	PickupShopStatusActive   = "active"
	PickupShopStatusDisabled = "disabled"
)

var (
	ErrDependencyUnavailable           = errors.New("dependency unavailable")
	ErrListingUnavailable              = errors.New("listing unavailable")
	ErrPickupNotFound                  = errors.New("pickup not found")
	ErrPickupNotPickingUp              = errors.New("pickup not in picking_up status")
	ErrInvalidAmount                   = errors.New("invalid amount")
	ErrInvalidProfit                   = errors.New("invalid profit amount")
	ErrDuplicatePickup                 = errors.New("duplicate pickup in progress")
	ErrOfflineSettlementCannotMark     = errors.New("pickup offline settlement cannot be marked")
	ErrFinancialAdjustmentInvalid      = errors.New("financial adjustment invalid")
	ErrFinancialAdjustmentNotFound     = errors.New("financial adjustment not found")
	ErrFinancialAdjustmentCannotSettle = errors.New("financial adjustment cannot be settled")
	ErrPickupShopNotFound              = errors.New("pickup shop not found")
	ErrPickupShopNameExists            = errors.New("pickup shop name already exists")
	ErrPickupCancelled                 = errors.New("pickup is cancelled")
	ErrInvalidThirdPartyOrderNo        = errors.New("invalid third party order no")
)

type PickupDTO struct {
	ID                        uint64         `json:"id"`
	PickupNo                  string         `json:"pickup_no"`
	ListingID                 uint64         `json:"listing_id"`
	ListingNo                 string         `json:"listing_no"`
	AccountID                 uint64         `json:"account_id"`
	AccountTitle              string         `json:"account_title"`
	ServerRegion              string         `json:"server_region"`
	LoginPlatform             string         `json:"login_platform"`
	OwnerID                   uint64         `json:"owner_id"`
	OwnerPhone                string         `json:"owner_phone"`
	AdminID                   uint64         `json:"admin_id"`
	Operator                  string         `json:"operator"`
	Platform                  string         `json:"platform"`
	ThirdPartyOrderNo         string         `json:"third_party_order_no"`
	ShopName                  string         `json:"shop_name"`
	RawShopName               string         `json:"raw_shop_name"`
	AccountSource             string         `json:"account_source"`
	SourceChannel             string         `json:"source_channel"`
	SettlementMode            string         `json:"settlement_mode"`
	ListingPriceCent          int64          `json:"listing_price_cent"`
	OrderAmountCent           int64          `json:"order_amount_cent"`
	DepositAmountCent         int64          `json:"deposit_amount_cent"`
	OwnerPriceCent            int64          `json:"owner_price_cent"`
	WebsiteProfitCent         int64          `json:"website_profit_cent"`
	ProfitAmountCent          int64          `json:"profit_amount_cent"`
	ProfitAdjustmentCent      int64          `json:"profit_adjustment_cent"`
	EffectiveProfitAmountCent int64          `json:"effective_profit_amount_cent"`
	SellerRatio               float64        `json:"seller_ratio"`
	BuyerRatio                float64        `json:"buyer_ratio"`
	AccountSnapshot           datatypes.JSON `json:"account_snapshot,omitempty"`
	SettleAmountCent          int64          `json:"settle_amount_cent"`
	SettleAdjustmentCent      int64          `json:"settle_adjustment_cent"`
	EffectiveSettleAmountCent int64          `json:"effective_settle_amount_cent"`
	Status                    string         `json:"status"`
	OfflineSettlementStatus   string         `json:"offline_settlement_status"`
	OfflineSettlementRemark   string         `json:"offline_settlement_remark"`
	OfflineSettledBy          *uint64        `json:"offline_settled_by,omitempty"`
	OfflineSettledAt          *time.Time     `json:"offline_settled_at,omitempty"`
	Remark                    string         `json:"remark"`
	CompleteRemark            string         `json:"complete_remark"`
	CreatedAt                 time.Time      `json:"created_at"`
	CompletedAt               *time.Time     `json:"completed_at,omitempty"`
	CancelledAt               *time.Time     `json:"cancelled_at,omitempty"`
}

type FinancialAdjustmentDTO struct {
	ID               uint64     `json:"id"`
	PickupID         uint64     `json:"pickup_id"`
	ProfitDeltaCent  int64      `json:"profit_delta_cent"`
	SettleDeltaCent  int64      `json:"settle_delta_cent"`
	SettlementMode   string     `json:"settlement_mode"`
	Status           string     `json:"status"`
	Reason           string     `json:"reason"`
	CreatedBy        uint64     `json:"created_by"`
	SettledBy        *uint64    `json:"settled_by,omitempty"`
	SettledAt        *time.Time `json:"settled_at,omitempty"`
	SettlementRemark string     `json:"settlement_remark"`
	CreatedAt        time.Time  `json:"created_at"`
}

type CreateRequest struct {
	ListingID         uint64 `json:"listing_id" binding:"required"`
	Operator          string `json:"operator" binding:"max=64"`
	Platform          string `json:"platform"`
	ThirdPartyOrderNo string `json:"third_party_order_no" binding:"max=128"`
	ShopName          string `json:"shop_name" binding:"max=100"`
	OrderAmountCent   int64  `json:"order_amount_cent" binding:"min=0"`
	DepositAmountCent int64  `json:"deposit_amount_cent" binding:"min=0"`
	ProfitAmountCent  int64  `json:"profit_amount_cent"`
	Remark            string `json:"remark"`
}

type CompleteRequest struct {
	SettleAmountCent int64  `json:"settle_amount_cent" binding:"required,min=1"`
	ProfitAmountCent *int64 `json:"profit_amount_cent"`
	CompleteRemark   string `json:"complete_remark"`
}

type OfflineSettlementRequest struct {
	Remark string `json:"remark" binding:"max=255"`
}

type UpdateProfitRequest struct {
	ProfitAmountCent int64  `json:"profit_amount_cent" binding:"min=0"`
	Reason           string `json:"reason"`
}

type UpdateThirdPartyOrderNoRequest struct {
	ThirdPartyOrderNo string `json:"third_party_order_no" binding:"required,max=128"`
}

// FinancialAdjustmentRequest 按目标金额创建完成后的差额流水，至少提供一个金额。
type FinancialAdjustmentRequest struct {
	ProfitAmountCent *int64 `json:"profit_amount_cent"`
	SettleAmountCent *int64 `json:"settle_amount_cent"`
	Reason           string `json:"reason" binding:"required,max=255"`
}

type FinancialAdjustmentSettlementRequest struct {
	Remark string `json:"remark" binding:"max=255"`
}

type CancelRequest struct {
	Reason string `json:"reason" binding:"required"`
}

type AdminPickupQuery struct {
	Page                    int
	PageSize                int
	Keyword                 string
	Status                  string
	ShopName                string
	AccountSource           string
	OfflineSettlementStatus string
	Operator                string
	ThirdPartyOrderNo       string
	StartTime               *time.Time
	EndTime                 *time.Time
}

type PickupShopDTO struct {
	ID        uint64    `json:"id"`
	Name      string    `json:"name"`
	Platform  string    `json:"platform"`
	Status    string    `json:"status"`
	SortOrder int       `json:"sort_order"`
	Remark    string    `json:"remark"`
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`
}

type CreatePickupShopRequest struct {
	Name      string `json:"name" binding:"required,max=100"`
	Platform  string `json:"platform" binding:"max=32"`
	Status    string `json:"status" binding:"omitempty,oneof=active disabled"`
	SortOrder int    `json:"sort_order"`
	Remark    string `json:"remark" binding:"max=255"`
}

type UpdatePickupShopRequest struct {
	Name      string `json:"name" binding:"required,max=100"`
	Platform  string `json:"platform" binding:"max=32"`
	Status    string `json:"status" binding:"required,oneof=active disabled"`
	SortOrder int    `json:"sort_order"`
	Remark    string `json:"remark" binding:"max=255"`
}

type PickupShopQuery struct {
	Keyword  string
	Platform string
	Status   string
}

type PickupShopHistoricalItemDTO struct {
	SourceName     string `json:"source_name"`
	Count          int64  `json:"count"`
	MappingStatus  string `json:"mapping_status"` // standard, mapped, unmapped
	TargetShopID   uint64 `json:"target_shop_id,omitempty"`
	TargetShopName string `json:"target_shop_name,omitempty"`
	Remark         string `json:"remark,omitempty"`
}

type PickupShopHistoricalStatsDTO struct {
	Items         []PickupShopHistoricalItemDTO `json:"items"`
	TotalPickups  int64                         `json:"total_pickups"`
	TotalShops    int                           `json:"total_shops"`
	StandardCount int                           `json:"standard_count"`
	MappedCount   int                           `json:"mapped_count"`
	UnmappedCount int                           `json:"unmapped_count"`
}

type MapHistoricalShopsRequest struct {
	FromShopNames       []string `json:"from_shop_names" binding:"required,min=1"`
	TargetShopName      string   `json:"target_shop_name" binding:"required,max=100"`
	CreateTargetMissing bool     `json:"create_target_missing"`
	TargetPlatform      string   `json:"target_platform" binding:"max=32"`
	Remark              string   `json:"remark" binding:"max=255"`
}

type MapHistoricalShopsResultDTO struct {
	UpdatedPickupsCount int64  `json:"updated_pickups_count"`
	TargetShopName      string `json:"target_shop_name"`
	TargetShopID        uint64 `json:"target_shop_id"`
	CreatedStandardShop bool   `json:"created_standard_shop"`
}

type SellerPickupQuery struct {
	Page     int
	PageSize int
	Status   string
}

type AvailableListingDTO struct {
	ID                      uint64  `json:"id"`
	ListingNo               string  `json:"listing_no"`
	AccountID               uint64  `json:"account_id"`
	AccountTitle            string  `json:"account_title"`
	ServerRegion            string  `json:"server_region"`
	LoginPlatform           string  `json:"login_platform"`
	OwnerID                 uint64  `json:"owner_id"`
	OwnerPhone              string  `json:"owner_phone"`
	ListingPriceCent        int64   `json:"listing_price_cent"`
	OwnerPriceCent          int64   `json:"owner_price_cent"`
	OwnerPurePriceCent      int64   `json:"owner_pure_price_cent"`
	OwnerExtraItemPriceCent int64   `json:"owner_extra_item_price_cent"`
	OwnerTotalPriceCent     int64   `json:"owner_total_price_cent"`
	WebsiteProfitCent       int64   `json:"website_profit_cent"`
	SellerRatio             float64 `json:"seller_ratio"`
	BuyerRatio              float64 `json:"buyer_ratio"`
	AccountSource           string  `json:"account_source"`
	IsExternalUpload        bool    `json:"is_external_upload"`
	SourceChannel           string  `json:"source_channel"`
	HandoffMode             string  `json:"handoff_mode"`
	SettlementMode          string  `json:"settlement_mode"`
}

type AvailableListingQuery struct {
	Page       int
	PageSize   int
	Keyword    string
	SourceType string
}

type PaginatedResult struct {
	Items    []PickupDTO `json:"items"`
	Total    int64       `json:"total"`
	Page     int         `json:"page"`
	PageSize int         `json:"page_size"`
}

type AvailableListingsResult struct {
	Items    []AvailableListingDTO `json:"items"`
	Total    int64                 `json:"total"`
	Page     int                   `json:"page"`
	PageSize int                   `json:"page_size"`
}