#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
从 V1 运行包目录读取 lib/ 与 cw_lib/ 的 JAR 清单，并与 V2 Maven 反应堆
`cw-elevator-application-reactor/pom.xml` 中显式声明的版本属性做对照。

用法（在仓库根目录）:
  python3 scripts/compare_v1_v2_elevator_dependencies.py

可选环境变量:
  V1_ROOT   默认: cw-elevator-application-V1.0.0.20211103
  REPO_ROOT 默认: 脚本所在目录的上一级（仓库根）
"""
from __future__ import annotations

import os
import re
import sys
from collections import defaultdict
from pathlib import Path


def repo_root() -> Path:
    return Path(__file__).resolve().parents[1]


def list_jars(d: Path) -> list[str]:
    if not d.is_dir():
        return []
    return sorted(p.name for p in d.glob("*.jar"))


def jar_stem_versions(jars: list[str]) -> dict[str, list[str]]:
    """artifactId -> [version-ish suffixes from filename]."""
    by_artifact: dict[str, list[str]] = defaultdict(list)
    for name in jars:
        if not name.endswith(".jar"):
            continue
        base = name[:-4]
        m = re.match(r"^(.+)-(\d[\d.\w-]*)$", base)
        if m:
            by_artifact[m.group(1)].append(m.group(2))
        else:
            by_artifact[base].append("")
    return dict(by_artifact)


def parse_pom_properties(pom: Path) -> dict[str, str]:
    text = pom.read_text(encoding="utf-8", errors="replace")
    m = re.search(r"<properties>(.*?)</properties>", text, re.DOTALL)
    if not m:
        return {}
    block = m.group(1)
    props = {}
    for mm in re.finditer(r"<([a-zA-Z0-9_.-]+)>\s*([^<]+?)\s*</\1>", block):
        k, v = mm.group(1), mm.group(2).strip()
        if k and v and "${" not in v:
            props[k] = v
    return props


def main() -> int:
    root = Path(os.environ.get("REPO_ROOT", repo_root()))
    v1 = root / os.environ.get(
        "V1_ROOT", "cw-elevator-application-V1.0.0.20211103"
    )
    lib = v1 / "lib"
    cw = v1 / "cw_lib"
    pom = root / "maven-cw-elevator-application" / "pom.xml"
    if not pom.is_file():
        print("missing", pom, file=sys.stderr)
        return 2

    jars_lib = list_jars(lib)
    jars_cw = list_jars(cw)
    props = parse_pom_properties(pom)

    print("## V1 目录\n")
    print(f"- lib: {lib} （{len(jars_lib)} 个 JAR）")
    print(f"- cw_lib: {cw} （{len(jars_cw)} 个 JAR）\n")

    print("## V2 反应堆版本属性（节选，与 cw_lib 对齐项）\n")
    keys = [
        "cloudwalk.internal.version",
        "cloudwalk.legacy.public.version",
        "intelligent.cwoscomponent.version",
        "davinci.manager.storage.version",
        "intelligent.lock.version",
        "cwos.sdk.resource.version",
        "cwos.sdk.event.version",
        "spring-cloud.version",
    ]
    for k in keys:
        if k in props:
            print(f"- `{k}` → **{props[k]}**")

    dup = {a: vs for a, vs in jar_stem_versions(jars_lib).items() if len(vs) > 1}
    print("\n## V1 lib 中「同 artifact 前缀、多版本」示例（ Classpath 冲突风险）\n")
    shown = 0
    for art in sorted(dup.keys()):
        vers = sorted(set(dup[art]))
        if len(vers) <= 1:
            continue
        print(f"- `{art}`: {', '.join(vers)}")
        shown += 1
        if shown >= 25:
            print("- …（其余略，可对本脚本输出重定向后全文检索）")
            break

    print("\n## 与 cw_lib 文件名逐字对照（V2 POM 显式坐标）\n")
    mapping = [
        ("cloudwalk-common-event", "cloudwalk.internal.version"),
        ("cloudwalk-common-result", "cloudwalk.legacy.public.version"),
        ("cloudwalk-common-serial", "cloudwalk.legacy.public.version"),
        ("cloudwalk-common-service", "cloudwalk.internal.version"),
        ("cloudwalk-common-web", "cloudwalk.legacy.public.version"),
        ("cloudwalk-intelligent-component-lock", "intelligent.lock.version"),
        ("davinci-manager-storage", "davinci.manager.storage.version"),
        ("intelligent-cwoscomponent-rest", "intelligent.cwoscomponent.version"),
        ("intelligent-cwoscomponent-interface", "intelligent.cwoscomponent.version"),
        ("cwos-java-sdk-resource", "cwos.sdk.resource.version"),
        ("cwos-sdk-event", "cwos.sdk.event.version"),
    ]
    cw_set = set(jars_cw)
    for prefix, prop in mapping:
        ver = props.get(prop, "?")
        expect = f"{prefix}-{ver}.jar"
        hit = expect if expect in cw_set else None
        if not hit:
            # SNAPSHOT / classifier 简判：取 cw_lib 中以 prefix- 开头的文件
            cand = [j for j in jars_cw if j.startswith(prefix + "-")]
            cand_s = cand[0] if len(cand) == 1 else str(cand)
            print(f"- **{prefix}**: V2 属性 `{prop}`=`{ver}` → 期望 `{expect}`；V1 cw_lib 实际: `{cand_s}`")
        else:
            print(f"- **{prefix}**: V1=`{hit}`，V2 属性 `{prop}`=`{ver}` ✓")

    print("\n## 电梯自研模块 JAR 版本\n")
    print(
        "- V1 cw_lib: `cw-elevator-application-*-**1.0-SNAPSHOT**.jar`（四模块）\n"
        "- V2 Maven: `cn.cloudwalk.elevator:*:**2.0-SNAPSHOT**`（反应堆版本，与 1.0 并存为正常升级）"
    )

    print("\n完整清单文件: `docs/architecture/data/v1-elevator-lib-jars.txt` 与 `v1-elevator-cw-lib-jars.txt`。")
    print(
        "\n生成 **V2 全量传递依赖树** 请在可解析私服的环境执行:\n"
        "  cd maven-cw-elevator-application && "
        "mvn -pl cw-elevator-application-starter -am dependency:tree "
        "-DoutputFile=target/v2-starter-dependency-tree.txt"
    )
    return 0


if __name__ == "__main__":
    raise SystemExit(main())