package service

import (
	"path/filepath"
	"strings"
	"testing"

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

func TestNormalizeInnerCodeSpecKey(t *testing.T) {
	tests := map[string]string{
		"A-027 黑色,M碼 建議45-55公斤": "黑色,M",
		"杏色（预售）, 2xl【备注】":       "杏色,2XL",
		"白 色,均码":                "白色,均码",
		"无逗号 规格":                "无逗号规格",
		"":                      "",
	}
	for input, want := range tests {
		if got := NormalizeInnerCodeSpecKey(input); got != want {
			t.Errorf("NormalizeInnerCodeSpecKey(%q)=%q，期望 %q", input, got, want)
		}
	}
}

func TestParseInnerCodeWorkbook_表头前置行与重复业务组(t *testing.T) {
	book := excelize.NewFile()
	defaultSheet := book.GetSheetList()[0]
	if err := book.SetSheetName(defaultSheet, innerCodeSheetName); err != nil {
		t.Fatal(err)
	}
	rows := [][]string{
		{"线下档口标签"},
		{"标签打印序号", "内部档口入库码", "Shopee订单编号", "清洗后规格", "档口名称", "档口货号", "店铺名称"},
		{"1", "DK001", "ORDER-1", "A-027 黑色,M碼 建議45-55公斤", "A档", "027", "shop-a"},
		{"2", "DK001", "ORDER-1", "A-027 黑色,M碼 建議45-55公斤", "A档", "027", "shop-a"},
		{"3", "DK002", "ORDER-2", "杏色,XL", "B档", "102", "shop-b"},
	}
	setInnerCodeWorkbookRows(t, book, rows)

	result, imported, err := parseInnerCodeWorkbook(book, "2026-08-15", "user-1")
	if err != nil {
		t.Fatal(err)
	}
	if result.TotalRows != 3 || result.DuplicateRows != 1 || len(imported) != 2 {
		t.Fatalf("统计不正确: result=%+v rows=%d", result, len(imported))
	}
	first := imported[0]
	if first.SpecKey != "黑色,M" || first.Stall != "A档#027" || first.SourceDuplicateCount != 2 {
		t.Fatalf("首行业务字段不正确: %+v", first)
	}
	if first.SourceRow != 3 || first.PrintSequence != 1 || first.ShopName != "shop-a" {
		t.Fatalf("首行来源字段不正确: %+v", first)
	}
}

func TestParseInnerCodeWorkbook_同日入库码指向不同业务键时报错(t *testing.T) {
	book := excelize.NewFile()
	defaultSheet := book.GetSheetList()[0]
	if err := book.SetSheetName(defaultSheet, innerCodeSheetName); err != nil {
		t.Fatal(err)
	}
	setInnerCodeWorkbookRows(t, book, [][]string{
		{"内部档口入库码", "Shopee订单编号", "清洗后规格", "档口及货号"},
		{"DK001", "ORDER-1", "黑色,M", "A#1"},
		{"DK001", "ORDER-2", "白色,L", "B#2"},
	})
	_, _, err := parseInnerCodeWorkbook(book, "2026-08-15", "user-1")
	if err == nil || !strings.Contains(err.Error(), "对应多组") {
		t.Fatalf("期望同日入库码冲突错误，实际 %v", err)
	}
}

func TestParseInnerCodeWorkbook_业务键相同但入库码不同时报错(t *testing.T) {
	book := excelize.NewFile()
	defaultSheet := book.GetSheetList()[0]
	if err := book.SetSheetName(defaultSheet, innerCodeSheetName); err != nil {
		t.Fatal(err)
	}
	setInnerCodeWorkbookRows(t, book, [][]string{
		{"内部档口入库码", "Shopee订单编号", "清洗后规格", "档口及货号"},
		{"DK001", "ORDER-1", "黑色,M", "A#1"},
		{"DK002", "ORDER-1", "黑色,M", "A#1"},
	})
	_, _, err := parseInnerCodeWorkbook(book, "2026-08-15", "user-1")
	if err == nil || !strings.Contains(err.Error(), "业务键相同") {
		t.Fatalf("期望业务键冲突错误，实际 %v", err)
	}
}

func TestValidateInnerCodeUpload(t *testing.T) {
	if err := ValidateInnerCodeUpload("labels.xlsx", 100, []byte{'P', 'K', 3, 4}); err != nil {
		t.Fatal(err)
	}
	for _, tc := range []struct {
		name string
		size int64
		head []byte
	}{
		{"labels.xls", 100, []byte{'P', 'K', 3, 4}},
		{"labels.xlsx", 0, []byte{'P', 'K', 3, 4}},
		{"labels.xlsx", MaxInnerCodeUploadBytes + 1, []byte{'P', 'K', 3, 4}},
		{"labels.xlsx", 100, []byte("text")},
	} {
		if err := ValidateInnerCodeUpload(tc.name, tc.size, tc.head); err == nil {
			t.Errorf("%+v 应被拒绝", tc)
		}
	}
}

func TestParseInnerCodeWorkbook_脱敏文件可重开(t *testing.T) {
	path := filepath.Join(t.TempDir(), "inner-code.xlsx")
	book := excelize.NewFile()
	defaultSheet := book.GetSheetList()[0]
	if err := book.SetSheetName(defaultSheet, innerCodeSheetName); err != nil {
		t.Fatal(err)
	}
	setInnerCodeWorkbookRows(t, book, [][]string{
		{"内部档口入库码", "Shopee订单编号", "原始产品规格（源Excel D列，原样直拷）", "档口及货号"},
		{"DK-TEST-1", "ORDER-TEST-1", "蓝色,L", "T#001"},
	})
	if err := book.SaveAs(path); err != nil {
		t.Fatal(err)
	}
	book.Close()
	reopened, err := excelize.OpenFile(path)
	if err != nil {
		t.Fatal(err)
	}
	defer reopened.Close()
	_, imported, err := parseInnerCodeWorkbook(reopened, "2026-08-15", "user-1")
	if err != nil || len(imported) != 1 || imported[0].SpecKey != "蓝色,L" {
		t.Fatalf("重开解析失败 rows=%+v err=%v", imported, err)
	}
}

func setInnerCodeWorkbookRows(t *testing.T, book *excelize.File, rows [][]string) {
	t.Helper()
	for rowIndex, row := range rows {
		for columnIndex, value := range row {
			cell, err := excelize.CoordinatesToCellName(columnIndex+1, rowIndex+1)
			if err != nil {
				t.Fatal(err)
			}
			if err := book.SetCellValue(innerCodeSheetName, cell, value); err != nil {
				t.Fatal(err)
			}
		}
	}
}