#!/bin/bash
# ============================================================================
# test_build_devkit.sh — build_devkit.sh 的回归测试（不重编）
#
# 耗时：热缓存约 15 秒；若需冷启动基线重建（首次运行/源码未缓存）约 1–2 分钟。
#
# 覆盖：
#   r1 P1 回归点 —— stamp 命中（跳过编译）时，--with-sources 必须真正产出 src/
#   r2 P2-1     —— licenses/README 被删后 --with-sources 必须恢复，
#                  --verify-only 必须拒绝缺许可证的交付
#   MANIFEST 内容漂移检测、src/ 缺文件与内容漂移自愈
#
# 前置：MEOW_DEVKIT_WORK 里已有一次构建（脚本会先跑一次增量构建，命中则秒回；
#       缓存缺失时会联网下载/编译，第一次运行约 1 分钟）。
#
# 用法：bash scripts/build/test_build_devkit.sh [-v]
#   退出码 0 = 全过；非 0 = 用例失败数。
# ============================================================================
set -u

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
SCRIPT="$ROOT/scripts/build/build_devkit.sh"
export MEOW_DEVKIT_WORK="${MEOW_DEVKIT_WORK:-$HOME/.cache/meow-devkit}"
OUT="$ROOT/fw_apps/devkit"
TMP="$MEOW_DEVKIT_WORK/test-tmp"

VERBOSE=0
[ "${1:-}" = "-v" ] && VERBOSE=1

PASS=0
FAILN=0
pass() { PASS=$((PASS + 1)); printf 'PASS  %s\n' "$*"; }
fail() { FAILN=$((FAILN + 1)); printf 'FAIL  %s\n' "$*"; }
run()  {   # run <说明> <命令...>
    local desc="$1"; shift
    local log="$TMP/last.log"
    if "$@" >"$log" 2>&1; then
        [ "$VERBOSE" = 1 ] && sed 's/^/      | /' "$log"
        return 0
    fi
    printf '      命令失败: %s\n' "$*"
    sed 's/^/      | /' "$log" | tail -20
    return 1
}

mkdir -p "$TMP"
# 无论成败都恢复现场，别把测试的破坏留在产物目录里
restore() {
    [ -f "$TMP/MANIFEST.txt.bak" ] && cp "$TMP/MANIFEST.txt.bak" "$OUT/MANIFEST.txt"
    rm -rf "$TMP"
}
trap restore EXIT

echo "== 0) 确保基线构建（幂等；已构建则秒回）"
run "基线构建" bash "$SCRIPT" || { echo "!!! 基线构建失败，后续用例无意义"; exit 1; }
pass "基线构建"

echo "== 1) P1 回归：stamp 命中 + --with-sources 必须产出 src/"
rm -rf "$OUT/src"
run "普通重跑（应命中 stamp 且不建 src/）" bash "$SCRIPT" || fail "T1a 普通重跑"
[ ! -d "$OUT/src" ] && pass "T1a 普通重跑不创建 src/（符合预期）" || fail "T1a 普通重跑意外创建了 src/"
run "--with-sources（stamp 命中路径）" bash "$SCRIPT" --with-sources || fail "T1b --with-sources 退出码非 0"
for f in ncurses-6.5.tar.gz procps-ng-4.0.4.tar.xz lsof-4.99.4.tar.xz build_devkit.sh DEVKIT.md; do
    [ -s "$OUT/src/$f" ] && pass "T1b src/$f 存在且非空" || fail "T1b 缺 src/$f（P1 未修好）"
done

echo "== 2) 缺文件自愈：删掉构建脚本后再 --with-sources"
rm -f "$OUT/src/build_devkit.sh"
run "--with-sources 补齐" bash "$SCRIPT" --with-sources || fail "T2 --with-sources 退出码非 0"
[ -s "$OUT/src/build_devkit.sh" ] && pass "T2 src/build_devkit.sh 被补回" || fail "T2 未补回 src/build_devkit.sh"

echo "== 3) 内容漂移自愈：把 src 里的源码包改坏"
printf 'tamper\n' >> "$OUT/src/ncurses-6.5.tar.gz"
run "--with-sources 重铺" bash "$SCRIPT" --with-sources || fail "T3 --with-sources 退出码非 0"
if cmp -s "$OUT/src/ncurses-6.5.tar.gz" "$MEOW_DEVKIT_WORK/src/ncurses-6.5.tar.gz"; then
    pass "T3 被改坏的源码包已恢复成钉住版本"
else
    fail "T3 源码包未恢复"
fi

echo "== 4) --verify-only：正常通过"
run "--verify-only" bash "$SCRIPT" --verify-only && pass "T4a --verify-only 通过" || fail "T4a --verify-only 失败"

echo "== 5) --verify-only：能查出 MANIFEST 内容漂移"
cp "$OUT/MANIFEST.txt" "$TMP/MANIFEST.txt.bak"
awk 'BEGIN{done=0} { if (!done && $1=="vmstat") { $NF="0000000000000000000000000000000000000000000000000000000000000000"; done=1 } print }' \
    "$TMP/MANIFEST.txt.bak" > "$OUT/MANIFEST.txt"
if run "--verify-only（MANIFEST 被篡改）" bash "$SCRIPT" --verify-only; then
    fail "T5 --verify-only 未发现 MANIFEST sha 被篡改"
else
    pass "T5 --verify-only 正确拒绝被篡改的 MANIFEST"
fi
cp "$TMP/MANIFEST.txt.bak" "$OUT/MANIFEST.txt"
run "--verify-only（恢复后）" bash "$SCRIPT" --verify-only && pass "T5b 恢复后重新通过" || fail "T5b 恢复后仍失败"

echo "== 6) 交付完整性：删 licenses/ 后 --with-sources 必须恢复"
LICENSES="procps-ng-4.0.4-COPYING procps-ng-4.0.4-COPYING.LIB ncurses-6.5-COPYING lsof-4.99.4-COPYING musl-COPYRIGHT"
rm -rf "$OUT/licenses"
run "--with-sources 补 licenses" bash "$SCRIPT" --with-sources || fail "T6 --with-sources 退出码非 0"
for f in $LICENSES; do
    [ -s "$OUT/licenses/$f" ] && pass "T6 licenses/$f 已恢复" || fail "T6 缺 licenses/$f"
done

echo "== 7) --verify-only 必须拒绝缺 licenses 的交付"
rm -rf "$OUT/licenses"
if run "--verify-only（缺 licenses）" bash "$SCRIPT" --verify-only; then
    fail "T7 --verify-only 未发现 licenses/ 缺失"
else
    pass "T7 --verify-only 正确拒绝缺 licenses 的交付"
fi
run "--with-sources 恢复" bash "$SCRIPT" --with-sources || fail "T7 --with-sources 恢复失败"
run "--verify-only（恢复后）" bash "$SCRIPT" --verify-only && pass "T7b 恢复后通过" || fail "T7b 恢复后仍失败"

echo "== 8) 交付完整性：删 README.txt 后 --with-sources 必须恢复"
rm -f "$OUT/README.txt"
run "--with-sources 补 README" bash "$SCRIPT" --with-sources || fail "T8 --with-sources 退出码非 0"
[ -s "$OUT/README.txt" ] && pass "T8 README.txt 已恢复" || fail "T8 README.txt 未恢复"

echo
printf '== 结果: %d 通过, %d 失败\n' "$PASS" "$FAILN"
[ "$FAILN" = 0 ]