#!/bin/bash
# verify_api_compat.sh — 验证 API 拆分前后路由清单完全一致
#
# 用法：
#   bash tests/scripts/verify_api_compat.sh
#
# 前置：
#   - 当前在开发目录（sanguo_moziplus_v2/）
#   - git working tree 有拆分改动
#   - main 分支是拆分前的基准
#
# 输出：
#   ✅ 路由完全一致（exit 0）
#   ❌ 路由有差异（exit 1，打印 diff）

set -euo pipefail

BEFORE_FILE="/tmp/routes_before_$$.txt"
AFTER_FILE="/tmp/routes_after_$$.txt"

echo "=== 提取拆分前路由清单（main 分支）==="

# stash 当前改动（如果有 untracked 新文件，--include-untracked）
STASHED=0
if ! git diff --quiet || ! git diff --cached --quiet; then
    git stash --include-untracked
    STASHED=1
fi

python3 -c "
from src.main import app
for route in app.routes:
    if hasattr(route, 'methods') and hasattr(route, 'path'):
        for m in sorted(route.methods):
            if m in ('GET','POST','PATCH','DELETE','PUT'):
                print(f'{m} {route.path}')
" | sort > "$BEFORE_FILE"

echo "Routes before: $(wc -l < "$BEFORE_FILE")"

# 恢复改动
if [ "$STASHED" = "1" ]; then
    git stash pop
fi

echo "=== 提取拆分后路由清单（当前 working tree）==="

python3 -c "
from src.main import app
for route in app.routes:
    if hasattr(route, 'methods') and hasattr(route, 'path'):
        for m in sorted(route.methods):
            if m in ('GET','POST','PATCH','DELETE','PUT'):
                print(f'{m} {route.path}')
" | sort > "$AFTER_FILE"

echo "Routes after: $(wc -l < "$AFTER_FILE")"

echo ""
echo "=== Diff ==="

if diff "$BEFORE_FILE" "$AFTER_FILE"; then
    echo "✅ 路由完全一致"
    rm -f "$BEFORE_FILE" "$AFTER_FILE"
    exit 0
else
    echo "❌ 路由有差异"
    rm -f "$BEFORE_FILE" "$AFTER_FILE"
    exit 1
fi