package teamsalarysettlement

import (
	"encoding/json"
	"fmt"
	"strconv"
	"strings"
)

// settlementUserID 只用于批量结算 HTTP 入参，兼容前端新合约的字符串 ID 和旧页面残留的数字 ID。
// 解析后仍以 int64 进入候选过滤和钱包结算，保证结算引擎内部只有一种精确 ID 表示。
type settlementUserID int64

func (v *settlementUserID) UnmarshalJSON(data []byte) error {
	raw := strings.TrimSpace(string(data))
	if raw == "" || raw == "null" {
		*v = 0
		return nil
	}
	if strings.HasPrefix(raw, `"`) {
		var text string
		if err := json.Unmarshal(data, &text); err != nil {
			return err
		}
		raw = strings.TrimSpace(text)
		if raw == "" {
			*v = 0
			return nil
		}
	}
	parsed, err := strconv.ParseInt(raw, 10, 64)
	if err != nil {
		return fmt.Errorf("invalid settlement user id %q", raw)
	}
	*v = settlementUserID(parsed)
	return nil
}

func settlementUserIDValues(items []settlementUserID) []int64 {
	out := make([]int64, 0, len(items))
	for _, item := range items {
		out = append(out, int64(item))
	}
	return out
}

type userDTO struct {
	UserID        string `json:"user_id"`
	DisplayUserID string `json:"display_user_id"`
	Username      string `json:"username"`
	Avatar        string `json:"avatar"`
}

type pendingDTO struct {
	PolicyType                string  `json:"policy_type"`
	UserID                    string  `json:"user_id"`
	User                      userDTO `json:"user"`
	CycleKey                  string  `json:"cycle_key"`
	RegionID                  int64   `json:"region_id"`
	RegionName                string  `json:"region_name"`
	PolicyID                  uint64  `json:"policy_id"`
	PolicyName                string  `json:"policy_name"`
	LevelNo                   int32   `json:"level_no"`
	IncomeUSDMinor            int64   `json:"income_usd_minor"`
	IncomeUSD                 string  `json:"income_usd"`
	SalaryUSDMinorTarget      int64   `json:"salary_usd_minor_target"`
	SalaryUSDTarget           string  `json:"salary_usd_target"`
	SalaryUSDMinorDelta       int64   `json:"salary_usd_minor_delta"`
	SalaryUSDDelta            string  `json:"salary_usd_delta"`
	SettledLevelNo            int32   `json:"settled_level_no"`
	SettledSalaryUSDMinor     int64   `json:"settled_salary_usd_minor"`
	SettledSalaryUSD          string  `json:"settled_salary_usd"`
	LastSettledIncomeUSDMinor int64   `json:"last_settled_income_usd_minor"`
	LastSettledIncomeUSD      string  `json:"last_settled_income_usd"`
	MonthClosedAtMS           int64   `json:"month_closed_at_ms"`
}

type recordDTO struct {
	SettlementID        string  `json:"settlement_id"`
	CommandID           string  `json:"command_id"`
	TransactionID       string  `json:"transaction_id"`
	PolicyType          string  `json:"policy_type"`
	TriggerMode         string  `json:"trigger_mode"`
	UserID              string  `json:"user_id"`
	User                userDTO `json:"user"`
	CycleKey            string  `json:"cycle_key"`
	RegionID            int64   `json:"region_id"`
	PolicyID            uint64  `json:"policy_id"`
	LevelNo             int32   `json:"level_no"`
	IncomeUSDMinor      int64   `json:"income_usd_minor"`
	IncomeUSD           string  `json:"income_usd"`
	SalaryUSDMinorDelta int64   `json:"salary_usd_minor_delta"`
	SalaryUSDDelta      string  `json:"salary_usd_delta"`
	Status              string  `json:"status"`
	Reason              string  `json:"reason"`
	CreatedAtMS         int64   `json:"created_at_ms"`
}

type pendingQuery struct {
	Page        int
	PageSize    int
	PolicyType  string
	TriggerMode string
	CycleKey    string
	RegionID    int64
	CountryID   int64
	CountryCode string
	UserID      int64
}

type recordQuery struct {
	Page        int
	PageSize    int
	PolicyType  string
	TriggerMode string
	CycleKey    string
	Status      string
	RegionID    int64
	CountryID   int64
	CountryCode string
	UserID      int64
	PolicyID    uint64
	StartAtMS   int64
	EndAtMS     int64
}

type settleRequest struct {
	PolicyType  string             `json:"policy_type"`
	TriggerMode string             `json:"trigger_mode"`
	CycleKey    string             `json:"cycle_key"`
	RegionID    int64              `json:"region_id"`
	CountryID   int64              `json:"country_id"`
	CountryCode string             `json:"country_code"`
	UserIDs     []settlementUserID `json:"user_ids"`
}

type settleResultDTO struct {
	PolicyType     string      `json:"policy_type"`
	CycleKey       string      `json:"cycle_key"`
	RequestedCount int         `json:"requested_count"`
	ProcessedCount int         `json:"processed_count"`
	SuccessCount   int         `json:"success_count"`
	SkippedCount   int         `json:"skipped_count"`
	FailureCount   int         `json:"failure_count"`
	Records        []recordDTO `json:"records"`
}