package change

import (
	"context"
	"os"
	"path/filepath"
	"testing"

	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/library/batchimport"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/model"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/model/entity"

	"github.com/xuri/excelize/v2"
)

func TestExcelTemplateHeaders(t *testing.T) {
	got := ExcelTemplateHeaders()
	want := []string{"ICCID", "MSISDN", "IMSI", "newPackageCode", "durationMonths", "giftDurationMonths", "effectiveMode", "offlineContractCompleted"}
	if len(got) != len(want) {
		t.Fatalf("headers len = %d, want %d", len(got), len(want))
	}
	for i := range want {
		if got[i] != want[i] {
			t.Fatalf("header[%d] = %q, want %q", i, got[i], want[i])
		}
	}
}

func TestParseExcelFileRows(t *testing.T) {
	path := buildTestExcelFile(t, [][]string{
		ExcelTemplateHeaders(),
		{"8986001", "", "", "PKG_NEW", "12", "", "immediate", "true"},
	})

	rows, opts, err := ParseExcelFileRows(context.Background(), path)
	if err != nil {
		t.Fatalf("ParseExcelFileRows error = %v", err)
	}
	if len(rows) != 1 {
		t.Fatalf("rows len = %d, want 1", len(rows))
	}
	if rows[0].GiftDurationMonths != 0 {
		t.Fatalf("giftDurationMonths = %d, want 0", rows[0].GiftDurationMonths)
	}
	if opts == nil || opts.GiftDurationMonths != 0 || !opts.OfflineContractCompleted {
		t.Fatalf("opts = %#v", opts)
	}
}

func TestParseExcelFileRowsRequireTrueOfflineContractCompleted(t *testing.T) {
	path := buildTestExcelFile(t, [][]string{
		ExcelTemplateHeaders(),
		{"8986001", "", "", "PKG_NEW", "12", "", "immediate", "false"},
	})

	rows, _, err := ParseExcelFileRows(context.Background(), path)
	if err != nil {
		t.Fatalf("ParseExcelFileRows error = %v", err)
	}
	if len(rows) != 1 {
		t.Fatalf("rows len = %d, want 1", len(rows))
	}
	if rows[0].Reason == "" {
		t.Fatal("expected row error when offlineContractCompleted is false")
	}
}

func TestValidateChangeRowSourceBatchOptional(t *testing.T) {
	operator := batchimport.OperatorContext{DeptId: 100}
	row := &Row{Iccid: "8986001"}
	card := &entity.TSimCardInfo{
		Iccid:              "8986001",
		Msisdn:             "13800008000",
		Imsi:               "460001234567890",
		DeptId:             100,
		CurrentPackageCode: "PKG_OLD",
		PackageStatus:      1,
	}
	bind := &entity.TSimCardBindPkg{
		Iccid:       "8986001",
		Msisdn:      "13800008000",
		PackageCode: "PKG_OLD",
		BatchNo:     "BATCH-OTHER",
	}

	if reason := validateChangeRow("", operator, row, card, bind); reason != "" {
		t.Fatalf("validateChangeRow without sourceBatchNo = %q, want empty", reason)
	}
	if reason := validateChangeRow("BATCH-REQ", operator, row, card, bind); reason == "" {
		t.Fatal("expected sourceBatchNo mismatch error")
	}
}

func TestValidateChangeRowIdentityMatch(t *testing.T) {
	operator := batchimport.OperatorContext{DeptId: 100}
	card := &entity.TSimCardInfo{
		Iccid:              "8986001",
		Msisdn:             "13800008000",
		Imsi:               "460001234567890",
		DeptId:             100,
		CurrentPackageCode: "PKG_OLD",
		PackageStatus:      1,
	}
	bind := &entity.TSimCardBindPkg{
		Iccid:       "8986001",
		Msisdn:      "13800008000",
		PackageCode: "PKG_OLD",
	}

	if reason := validateChangeRow("", operator, &Row{Iccid: "8986001", Msisdn: "bad"}, card, bind); reason == "" {
		t.Fatal("expected MSISDN mismatch error")
	}
	if reason := validateChangeRow("", operator, &Row{Iccid: "8986001", Imsi: "bad"}, card, bind); reason == "" {
		t.Fatal("expected IMSI mismatch error")
	}
}

func TestBuildBatchInfoOmitsEmptySourceBatchNo(t *testing.T) {
	p := NewProcessor()
	info := p.BuildBatchInfo(context.Background(), batchimport.SubmitRequest{
		BizParams: &model.TSimCardChangeBatchSubmitParam{
			NewPackageCode:           "PKG_NEW",
			DurationMonths:           12,
			GiftDurationMonths:       0,
			EffectiveMode:            "immediate",
			OfflineContractCompleted: true,
		},
		ExecutionResult: &CompleteOutput{
			SourceBatchNo:            "",
			SourceMode:               0,
			NewPackageCode:           "PKG_NEW",
			NewPackageName:           "New Package",
			OldPackageCode:           "PKG_OLD",
			OldPackageName:           "Old Package",
			DurationMonths:           12,
			GiftDurationMonths:       0,
			EffectiveMode:            "immediate",
			OfflineContractCompleted: true,
		},
	}, nil, nil, nil, 0)

	if info == nil {
		t.Fatal("info is nil")
	}
	data := info.Map()
	if _, ok := data["sourceBatchNo"]; ok {
		t.Fatalf("sourceBatchNo should be omitted when empty: %#v", data)
	}
	if _, ok := data["remark"]; ok {
		t.Fatalf("remark should not exist: %#v", data)
	}
	if _, ok := data["buyerNote"]; ok {
		t.Fatalf("buyerNote should not exist: %#v", data)
	}
	if _, ok := data["adminNote"]; ok {
		t.Fatalf("adminNote should not exist: %#v", data)
	}
}

func buildTestExcelFile(t *testing.T, rows [][]string) string {
	t.Helper()

	dir := t.TempDir()
	path := filepath.Join(dir, "change.xlsx")
	f := excelize.NewFile()
	for i, row := range rows {
		cell, err := excelize.CoordinatesToCellName(1, i+1)
		if err != nil {
			t.Fatalf("CoordinatesToCellName error = %v", err)
		}
		if err = f.SetSheetRow("Sheet1", cell, &row); err != nil {
			t.Fatalf("SetSheetRow error = %v", err)
		}
	}
	if err := f.SaveAs(path); err != nil {
		t.Fatalf("SaveAs error = %v", err)
	}
	_ = f.Close()
	if _, err := os.Stat(path); err != nil {
		t.Fatalf("Stat error = %v", err)
	}
	return path
}