package renew

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

	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/consts"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/library/batchinput/text"
	"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) {
	t.Parallel()

	expected := []string{
		"ICCID",
		"MSISDN",
		"IMSI",
		"续费年限",
		"是否走线下",
	}
	if !reflect.DeepEqual(ExcelTemplateHeaders(), expected) {
		t.Fatalf("unexpected headers: %#v", ExcelTemplateHeaders())
	}
}

func TestRenewDurationValueToMonths(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name  string
		unit  string
		value int
		want  int
	}{
		{name: "one month", unit: consts.RenewDurationUnitMonth, value: 1, want: 1},
		{name: "one year", unit: consts.RenewDurationUnitYear, value: 1, want: 12},
		{name: "unknown unit defaults to year", unit: "unknown", value: 2, want: 24},
	}

	for _, test := range tests {
		test := test
		t.Run(test.name, func(t *testing.T) {
			t.Parallel()
			if got := consts.DurationValueToMonths(test.unit, test.value); got != test.want {
				t.Fatalf("DurationValueToMonths(%q, %d) = %d, want %d", test.unit, test.value, got, test.want)
			}
		})
	}
}

func TestRenewDisplayDurationAndAmount(t *testing.T) {
	t.Parallel()

	yearSnapshot := &model.TSimCardRenewPriceSnapshot{
		RenewDurationUnit: consts.RenewDurationUnitYear,
		RenewUnitPrice:    10,
	}
	yearParam := &model.TSimCardRenewBatchSubmitParam{DurationYears: 1}
	if got := renewDisplayDurationValue(yearParam); got != 1 {
		t.Fatalf("renewDisplayDurationValue(year) = %d, want 1", got)
	}
	if got := renewActualDurationMonths(yearSnapshot, renewDisplayDurationValue(yearParam)); got != 12 {
		t.Fatalf("renewActualDurationMonths(year) = %d, want 12", got)
	}
	yearAmount, err := resolveRenewAmount(yearSnapshot, yearParam, 2)
	if err != nil {
		t.Fatalf("resolveRenewAmount(year) failed: %v", err)
	}
	if yearAmount != 20 {
		t.Fatalf("resolveRenewAmount(year) = %.2f, want 20.00", yearAmount)
	}

	monthSnapshot := &model.TSimCardRenewPriceSnapshot{
		RenewDurationUnit: consts.RenewDurationUnitMonth,
		RenewUnitPrice:    10,
	}
	monthParam := &model.TSimCardRenewBatchSubmitParam{DurationMonths: 1}
	if got := renewActualDurationMonths(monthSnapshot, renewDisplayDurationValue(monthParam)); got != 12 {
		t.Fatalf("renewActualDurationMonths(month snapshot) = %d, want 12", got)
	}
	actualMonthParam := &model.TSimCardRenewBatchSubmitParam{DurationMonths: 12}
	if got := renewDisplayDurationValue(actualMonthParam); got != 1 {
		t.Fatalf("renewDisplayDurationValue(actual months legacy) = %d, want 1", got)
	}
	monthAmount, err := resolveRenewAmount(monthSnapshot, monthParam, 2)
	if err != nil {
		t.Fatalf("resolveRenewAmount(month) failed: %v", err)
	}
	if monthAmount != 20 {
		t.Fatalf("resolveRenewAmount(month) = %.2f, want 20.00", monthAmount)
	}
}

func TestApplyExecutionOptionsKeepsDisplayDurationValue(t *testing.T) {
	t.Parallel()

	in := &model.TSimCardRenewBatchSubmitParam{}
	applyExecutionOptions(in, &executionOptions{
		DurationYears:  2,
		DurationMonths: 2,
		PaymentMode:    renewPaymentModeBalance,
	})
	if in.DurationYears != 2 || in.DurationMonths != 2 {
		t.Fatalf("duration should keep display value: %#v", in)
	}
	if got := renewDisplayDurationValue(in); got != 2 {
		t.Fatalf("renewDisplayDurationValue = %d, want 2", got)
	}
}

func TestRenewDeptAncestorsContain(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name      string
		ancestors string
		deptID    int64
		want      bool
	}{
		{name: "contains direct ancestor", ancestors: "0,100,200", deptID: 100, want: true},
		{name: "contains with spaces", ancestors: "0, 100 ,200", deptID: 100, want: true},
		{name: "does not match partial id", ancestors: "0,1001,200", deptID: 100, want: false},
		{name: "empty ancestors", ancestors: "", deptID: 100, want: false},
		{name: "invalid dept", ancestors: "0,100,200", deptID: 0, want: false},
	}
	for _, test := range tests {
		test := test
		t.Run(test.name, func(t *testing.T) {
			t.Parallel()
			if got := renewDeptAncestorsContain(test.ancestors, test.deptID); got != test.want {
				t.Fatalf("renewDeptAncestorsContain(%q, %d) = %v, want %v", test.ancestors, test.deptID, got, test.want)
			}
		})
	}
}

func TestParseExcelFileRowsAndOptions(t *testing.T) {
	t.Parallel()

	filePath := filepath.Join(t.TempDir(), "renew.xlsx")
	f := excelize.NewFile()
	headers := ExcelTemplateHeaders()
	if err := f.SetSheetRow("Sheet1", "A1", &headers); err != nil {
		t.Fatalf("set headers failed: %v", err)
	}
	row := []any{
		"8986000000000000001",
		"13800008000",
		"460001234567890",
		"1",
		"是",
	}
	if err := f.SetSheetRow("Sheet1", "A2", &row); err != nil {
		t.Fatalf("set row failed: %v", err)
	}
	if err := f.SaveAs(filePath); err != nil {
		t.Fatalf("save excel failed: %v", err)
	}
	_ = f.Close()

	rows, options, err := ParseExcelFileRows(context.Background(), filePath)
	if err != nil {
		t.Fatalf("parse excel failed: %v", err)
	}
	if len(rows) != 1 {
		t.Fatalf("unexpected row count: %d", len(rows))
	}
	if rows[0].Reason != "" {
		t.Fatalf("unexpected row reason: %s", rows[0].Reason)
	}
	if rows[0].Msisdn != "13800008000" {
		t.Fatalf("unexpected msisdn: %s", rows[0].Msisdn)
	}
	if rows[0].Imsi != "460001234567890" {
		t.Fatalf("unexpected imsi: %s", rows[0].Imsi)
	}
	if options == nil {
		t.Fatal("options should not be nil")
	}
	if options.DurationYears != 1 {
		t.Fatalf("unexpected durationYears: %d", options.DurationYears)
	}
	if options.PaymentMode != "offline" {
		t.Fatalf("unexpected paymentMode: %s", options.PaymentMode)
	}

	submitParam := options.ToBatchSubmitParam()
	if submitParam.DurationYears != 1 || submitParam.DurationMonths != 12 {
		t.Fatalf("unexpected submit duration fields: %#v", submitParam)
	}
	if submitParam.PaymentMode != "offline" {
		t.Fatalf("unexpected submit paymentMode: %#v", submitParam)
	}
	if !submitParam.OfflineContractCompleted {
		t.Fatalf("excel submit should mark offline contract as confirmed: %#v", submitParam)
	}
	if submitParam.SourceBatchNo != "" || submitParam.BuyerNote != "" || submitParam.AdminNote != "" || submitParam.Remark != "" {
		t.Fatalf("excel submit param should not carry removed fields: %#v", submitParam)
	}

	confirmParam := options.ToBatchConfirmParam("RB20260706001")
	if confirmParam.BatchNo != "RB20260706001" {
		t.Fatalf("unexpected batchNo: %s", confirmParam.BatchNo)
	}
	if confirmParam.DurationYears != 1 || confirmParam.DurationMonths != 12 {
		t.Fatalf("unexpected confirm duration fields: %#v", confirmParam)
	}
	if confirmParam.PaymentMode != "offline" {
		t.Fatalf("unexpected confirm paymentMode: %#v", confirmParam)
	}
}

func TestParseExcelFileRowsRejectsMultipleSheetsWithData(t *testing.T) {
	t.Parallel()

	filePath := filepath.Join(t.TempDir(), "renew-multi.xlsx")
	f := excelize.NewFile()
	headers := ExcelTemplateHeaders()
	if err := f.SetSheetRow("Sheet1", "A1", &headers); err != nil {
		t.Fatalf("set headers failed: %v", err)
	}
	row := []any{
		"8986000000000000001",
		"13800008000",
		"460001234567890",
		"1",
		"是",
	}
	if err := f.SetSheetRow("Sheet1", "A2", &row); err != nil {
		t.Fatalf("set row failed: %v", err)
	}
	_, err := f.NewSheet("Sheet2")
	if err != nil {
		t.Fatalf("new sheet failed: %v", err)
	}
	if err := f.SetSheetRow("Sheet2", "A1", &headers); err != nil {
		t.Fatalf("set sheet2 headers failed: %v", err)
	}
	if err := f.SetSheetRow("Sheet2", "A2", &row); err != nil {
		t.Fatalf("set sheet2 row failed: %v", err)
	}
	if err := f.SaveAs(filePath); err != nil {
		t.Fatalf("save excel failed: %v", err)
	}
	_ = f.Close()

	if _, _, err := ParseExcelFileRows(context.Background(), filePath); err == nil {
		t.Fatal("expected multiple-sheet excel to be rejected")
	}
}

func TestPrepareExcelProcessorUsesPrepareBatchType(t *testing.T) {
	t.Parallel()

	processor := NewPrepareExcelProcessor()
	cfg := processor.Config()
	if cfg.BatchType != consts.BatchTypePrepare {
		t.Fatalf("prepare excel batch type = %d, want %d", cfg.BatchType, consts.BatchTypePrepare)
	}
	if cfg.BatchNoPrefix != consts.BatchNoPrefixRenew {
		t.Fatalf("prepare excel batch prefix = %q, want %q", cfg.BatchNoPrefix, consts.BatchNoPrefixRenew)
	}
}

func TestParseRenewInputLineSupportsSingleAndTripleFields(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name       string
		line       text.FieldLine
		wantCode   string
		wantIccid  string
		wantMsisdn string
		wantImsi   string
		wantReason string
	}{
		{
			name:      "single value",
			line:      text.FieldLine{RowNo: 2, Fields: []string{"89860401786597927028"}},
			wantCode:  "89860401786597927028",
			wantIccid: "89860401786597927028",
		},
		{
			name:       "triple values",
			line:       text.FieldLine{RowNo: 3, Fields: []string{"89860401786597927028", "14100007028", "460046597927028"}},
			wantCode:   "89860401786597927028",
			wantIccid:  "89860401786597927028",
			wantMsisdn: "14100007028",
			wantImsi:   "460046597927028",
		},
		{
			name:       "invalid format",
			line:       text.FieldLine{RowNo: 4, Fields: []string{"a", "b"}},
			wantReason: "格式错误",
		},
	}

	for _, test := range tests {
		test := test
		t.Run(test.name, func(t *testing.T) {
			t.Parallel()
			row := parseRenewInputLine(test.line)
			if row.InputCode != test.wantCode {
				t.Fatalf("input code = %q, want %q", row.InputCode, test.wantCode)
			}
			if row.Iccid != test.wantIccid {
				t.Fatalf("iccid = %q, want %q", row.Iccid, test.wantIccid)
			}
			if row.Msisdn != test.wantMsisdn {
				t.Fatalf("msisdn = %q, want %q", row.Msisdn, test.wantMsisdn)
			}
			if row.Imsi != test.wantImsi {
				t.Fatalf("imsi = %q, want %q", row.Imsi, test.wantImsi)
			}
			if test.wantReason != "" && row.Reason == "" {
				t.Fatal("expected row reason")
			}
		})
	}
}

func TestRenewIdentityResolverResolvesAnyCardIdentity(t *testing.T) {
	t.Parallel()

	resolver := newRenewIdentityResolverFromCards([]*entity.TSimCardInfo{
		{
			Id:     1,
			Iccid:  "89860401786597927028",
			Msisdn: "14100007028",
			Imsi:   "460046597927028",
		},
		{
			Id:     2,
			Iccid:  "89860401786597927029",
			Msisdn: "14100007029",
			Imsi:   "460046597927029",
		},
	})

	row := &Row{RowNo: 2, InputCode: "14100007028", Msisdn: "14100007028"}
	resolver.resolveRow(row)
	if row.Reason != "" {
		t.Fatalf("unexpected reason: %s", row.Reason)
	}
	if row.Iccid != "89860401786597927028" || row.Msisdn != "14100007028" || row.Imsi != "460046597927028" {
		t.Fatalf("unexpected resolved row: %#v", row)
	}

	row = &Row{RowNo: 3, InputCode: "460046597927029", Imsi: "460046597927029"}
	resolver.resolveRow(row)
	if row.Reason != "" {
		t.Fatalf("unexpected reason for imsi row: %s", row.Reason)
	}
	if row.Iccid != "89860401786597927029" || row.Msisdn != "14100007029" || row.Imsi != "460046597927029" {
		t.Fatalf("unexpected imsi resolved row: %#v", row)
	}
}

func TestRenewIdentityResolverRejectsAmbiguousOrMismatchedIdentity(t *testing.T) {
	t.Parallel()

	resolver := newRenewIdentityResolverFromCards([]*entity.TSimCardInfo{
		{Id: 1, Iccid: "89860401786597927028", Msisdn: "14100007028", Imsi: "460046597927028"},
		{Id: 2, Iccid: "89860401786597927029", Msisdn: "89860401786597927028", Imsi: "460046597927029"},
	})

	ambiguous := &Row{RowNo: 2, InputCode: "89860401786597927028", Iccid: "89860401786597927028"}
	resolver.resolveRow(ambiguous)
	if ambiguous.Reason == "" {
		t.Fatal("expected ambiguous reason")
	}

	mismatched := &Row{RowNo: 3, InputCode: "89860401786597927028", Iccid: "89860401786597927028", Msisdn: "00000000000"}
	resolver.resolveRow(mismatched)
	if mismatched.Reason == "" {
		t.Fatal("expected mismatch reason")
	}
}