package main

import (
	"archive/zip"
	"database/sql"
	"flag"
	"fmt"
	"os"
	"path/filepath"

	_ "modernc.org/sqlite"

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

func main() {
	base := flag.String("base", "", "examples base directory")
	flag.Parse()
	if *base == "" {
		fmt.Fprintln(os.Stderr, "missing --base")
		os.Exit(2)
	}

	if err := writeExcelToWord(filepath.Join(*base, "excel-to-word")); err != nil {
		fmt.Fprintf(os.Stderr, "write excel-to-word fixtures: %v\n", err)
		os.Exit(1)
	}
	if err := writeSQLiteToExcel(filepath.Join(*base, "sqlite-to-excel")); err != nil {
		fmt.Fprintf(os.Stderr, "write sqlite-to-excel fixtures: %v\n", err)
		os.Exit(1)
	}
}

func writeExcelToWord(dir string) error {
	if err := os.MkdirAll(dir, 0o755); err != nil {
		return err
	}
	if err := writeWorkbook(filepath.Join(dir, "data.xlsx"), "Daily", [][]string{
		{"name", "date", "done", "plan"},
		{"张三", "2026-06-18", "完成接口数据核对", "继续处理异常数据"},
		{"李四", "2026-06-18", "完成日报提交", "补充系统截图"},
	}); err != nil {
		return err
	}
	return writeDocx(filepath.Join(dir, "template.docx"), `<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main"><w:body><w:p><w:r><w:t>员工：{{na</w:t></w:r><w:r><w:t>me}}</w:t></w:r></w:p><w:p><w:r><w:t>日期：{{date}}</w:t></w:r></w:p><w:p><w:r><w:t>完成：{{done}}</w:t></w:r></w:p><w:p><w:r><w:t>计划：{{plan}}</w:t></w:r></w:p></w:body></w:document>`)
}

func writeSQLiteToExcel(dir string) error {
	if err := os.MkdirAll(dir, 0o755); err != nil {
		return err
	}
	if err := writeSQLite(filepath.Join(dir, "data.db")); err != nil {
		return err
	}
	return writeWorkbook(filepath.Join(dir, "template.xlsx"), "Summary", [][]string{
		{"部门", "{{department}}"},
		{"日期", "{{report_date}}"},
		{"总数", "{{total_count}}"},
		{"异常数", "{{abnormal_count}}"},
	})
}

func writeWorkbook(path, sheet string, rows [][]string) error {
	f := excelize.NewFile()
	defer f.Close()

	defaultSheet := f.GetSheetName(0)
	if defaultSheet != sheet {
		if err := f.SetSheetName(defaultSheet, sheet); err != nil {
			return err
		}
	}
	for r, row := range rows {
		for c, value := range row {
			cell, err := excelize.CoordinatesToCellName(c+1, r+1)
			if err != nil {
				return err
			}
			if err := f.SetCellValue(sheet, cell, value); err != nil {
				return err
			}
		}
	}
	return f.SaveAs(path)
}

func writeDocx(path, body string) error {
	file, err := os.Create(path)
	if err != nil {
		return err
	}
	defer file.Close()

	zw := zip.NewWriter(file)
	if err := writeZipEntry(zw, "[Content_Types].xml", `<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types"/>`); err != nil {
		return err
	}
	if err := writeZipEntry(zw, "word/document.xml", body); err != nil {
		return err
	}
	return zw.Close()
}

func writeZipEntry(zw *zip.Writer, name, body string) error {
	w, err := zw.Create(name)
	if err != nil {
		return err
	}
	_, err = w.Write([]byte(body))
	return err
}

func writeSQLite(path string) error {
	if err := os.Remove(path); err != nil && !os.IsNotExist(err) {
		return err
	}

	db, err := sql.Open("sqlite", path)
	if err != nil {
		return err
	}
	defer db.Close()

	_, err = db.Exec(`
		create table department_summary (
			department text,
			report_date text,
			total_count integer,
			abnormal_count integer
		);
		insert into department_summary values
			('营销部', '2026-06-18', 128, 3),
			('客服部', '2026-06-18', 76, 0),
			('客服部', '2026-06-17', 68, 1);
	`)
	return err
}