// pvftext 在 Script.pvf 的全部文本文件里搜索子串，用于定位客户端提示文字来自哪个文件。
//
// 城市 NPC 的对话、公告、任务文本都以反引号字符串形式存在 PVF 文本里，
// 所以"这句话是谁弹的"可以直接从数据回答。
//
//	go run ./cmd/scratch/pvftext -pvf <path> -find 无法创建公会
package main

import (
	"flag"
	"fmt"
	"os"
	"strings"

	platformpvf "longheng.io/server/internal/platform/pvf"
)

func main() {
	pvfPath := flag.String("pvf", `../runtime/data/dnf/Script.pvf`, "Script.pvf path")
	find := flag.String("find", "", "要搜索的子串（逗号分隔多个）")
	limit := flag.Int("limit", 20, "每个子串最多报告多少条")
	contextLines := flag.Int("context", 0, "额外打印命中行的上下文行数")
	flag.Parse()

	if strings.TrimSpace(*find) == "" {
		fmt.Fprintln(os.Stderr, "usage: pvftext -pvf <path> -find <substring>")
		os.Exit(2)
	}

	var needles []string
	for _, n := range strings.Split(*find, ",") {
		if n = strings.TrimSpace(n); n != "" {
			needles = append(needles, n)
		}
	}

	archive, err := platformpvf.Open(*pvfPath)
	if err != nil {
		fmt.Fprintln(os.Stderr, "open:", err)
		os.Exit(1)
	}
	fmt.Printf("PVF=%s 文件数=%d 搜索=%q\n", *pvfPath, archive.FileCount(), needles)

	counts := map[string]int{}
	for _, f := range archive.Files() {
		// 只扫文本类文件，跳过巨大的二进制资源
		lower := strings.ToLower(f.ArchivePath)
		if !strings.HasSuffix(lower, ".npc") && !strings.HasSuffix(lower, ".qst") &&
			!strings.HasSuffix(lower, ".etc") && !strings.HasSuffix(lower, ".lst") &&
			!strings.HasSuffix(lower, ".twn") && !strings.HasSuffix(lower, ".map") &&
			!strings.HasSuffix(lower, ".stk") && !strings.HasSuffix(lower, ".equ") &&
			!strings.HasSuffix(lower, ".evt") && !strings.HasSuffix(lower, ".shp") && !strings.HasSuffix(lower, ".str") {
			continue
		}
		text, err := archive.FileText(f.Index)
		if err != nil {
			continue
		}
		for _, n := range needles {
			if !strings.Contains(text, n) {
				continue
			}
			counts[n]++
			if counts[n] <= *limit {
				fmt.Printf("\n[%s] %s\n", n, f.ArchivePath)
				lines := strings.Split(strings.ReplaceAll(text, "\r\n", "\n"), "\n")
				for i, line := range lines {
					if !strings.Contains(line, n) {
						continue
					}
					lo := i - *contextLines
					if lo < 0 {
						lo = 0
					}
					hi := i + *contextLines
					if hi >= len(lines) {
						hi = len(lines) - 1
					}
					for j := lo; j <= hi; j++ {
						mark := "  "
						if j == i {
							mark = ">>"
						}
						fmt.Printf("  %s %5d| %s\n", mark, j+1, strings.TrimSpace(lines[j]))
					}
				}
			}
		}
	}
	for _, n := range needles {
		fmt.Printf("\n命中统计 [%s] = %d 个文件\n", n, counts[n])
	}
}