// pvfprobe911 精确列出 scene.etc 里的 [video] 影片块（结构：[scene] int 空串 [video] ref）。
package main

import (
	"encoding/binary"
	"flag"
	"fmt"

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

func u32(b []byte) uint32 { return binary.LittleEndian.Uint32(b) }

const (
	refScene = uint32(0x025138C6) // "[scene]"
	refVideo = uint32(0x02513B04) // "[video]"
	refEmpty = uint32(0x00000B04) // 空串
)

func main() {
	input := flag.String("pvf", "", "input PVF")
	flag.Parse()
	archive, err := platformpvf.Open(*input)
	if err != nil {
		panic(err)
	}
	scene, _ := archive.ReadRaw("etc/storydigest/scene.etc")
	toks := len(scene) / 5
	fmt.Printf("scene.etc %d 字节 %d 令牌\n", len(scene), toks)

	fmt.Println("\n=== 精确 [video] 影片块 ===")
	n := 0
	for i := 0; i+3 < toks; i++ {
		if scene[i*5] != 3 || u32(scene[i*5+1:i*5+5]) != refScene {
			continue
		}
		if scene[(i+1)*5] != 0 {
			continue
		}
		if scene[(i+2)*5] != 6 || u32(scene[(i+2)*5+1:(i+2)*5+5]) != refEmpty {
			continue
		}
		if scene[(i+3)*5] != 3 || u32(scene[(i+3)*5+1:(i+3)*5+5]) != refVideo {
			continue
		}
		num := u32(scene[(i+1)*5+1 : (i+1)*5+5])
		// 影片池引用在 [video] 之后
		ref := u32(scene[(i+4)*5+1 : (i+4)*5+5])
		typ := scene[(i+4)*5]
		fmt.Printf("  块@token#%-4d 段号=%-5d [video]后: type=%d ref=0x%08X\n", i, num, typ, ref)
		n++
	}
	fmt.Printf("共 %d 个 [video] 影片块\n", n)

	fmt.Println("\n=== 文件尾 8 个令牌 ===")
	for i := toks - 8; i < toks; i++ {
		b := scene[i*5 : i*5+5]
		fmt.Printf("  #%-4d type=%d ref=0x%08X\n", i, b[0], u32(b[1:5]))
	}
}