#!/usr/bin/env bats
# sync_standards.sh 测试套件

# 测试辅助函数
setup() {
    # 创建临时测试目录
    export TEST_DIR="$(mktemp -d)"
    export PLAYBOOK_ROOT="$(cd "$BATS_TEST_DIRNAME/../.." && pwd)"
    # 初始化测试项目
    cd "$TEST_DIR"
    git init
    git config user.name "Test User"
    git config user.email "test@example.com"

    # 模拟 playbook 快照目录
    mkdir -p docs/standards/playbook
    cp -r "$PLAYBOOK_ROOT"/{.agents,.gitattributes,docs,scripts} docs/standards/playbook/ 2>/dev/null || true

    export SCRIPT_PATH="$TEST_DIR/docs/standards/playbook/scripts/sync_standards.sh"
}

teardown() {
    # 清理测试目录
    if [ -n "$TEST_DIR" ] && [ -d "$TEST_DIR" ]; then
        chmod -R u+rwX "$TEST_DIR" 2>/dev/null || true
        rm -rf "$TEST_DIR"
    fi
}

# ==============================================
# 基础功能测试
# ==============================================

@test "sync_standards.sh 脚本存在且可执行" {
    [ -f "$SCRIPT_PATH" ]
}

@test "sync_standards.sh 无参数时同步 tsl 规则集" {
    cd "$TEST_DIR"
    sh "$SCRIPT_PATH"

    # 验证输出目录
    [ -d ".agents/tsl" ]
    [ -f ".agents/tsl/index.md" ]
}

@test "sync_standards.sh 无参数时自动识别已有语言" {
    cd "$TEST_DIR"
    mkdir -p .agents/cpp
    echo "# placeholder" > .agents/cpp/index.md

    sh "$SCRIPT_PATH"

    [ -d ".agents/cpp" ]
    [ -f ".agents/cpp/index.md" ]
    [ ! -d ".agents/tsl" ]
}

@test "sync_standards.sh tsl - 同步 TSL 规则集" {
    cd "$TEST_DIR"
    sh "$SCRIPT_PATH" tsl

    # 验证必须文件
    [ -d ".agents/tsl" ]
    [ -f ".agents/tsl/index.md" ]
    [ -f ".agents/tsl/auth.md" ]
    [ -f ".agents/tsl/code_quality.md" ]
    [ -f ".agents/tsl/performance.md" ]
    [ -f ".agents/tsl/testing.md" ]
}

@test "sync_standards.sh cpp - 同步 C++ 规则集" {
    cd "$TEST_DIR"
    sh "$SCRIPT_PATH" cpp

    # 验证必须文件
    [ -d ".agents/cpp" ]
    [ -f ".agents/cpp/index.md" ]
    [ -f ".agents/cpp/auth.md" ]
    [ -f ".agents/cpp/code_quality.md" ]
}

@test "sync_standards.sh tsl cpp - 同步多个规则集" {
    cd "$TEST_DIR"
    sh "$SCRIPT_PATH" tsl cpp

    # 验证两个规则集都存在
    [ -d ".agents/tsl" ]
    [ -d ".agents/cpp" ]
    [ -f ".agents/index.md" ]
}

# ==============================================
# .gitattributes 同步测试
# ==============================================

@test ".gitattributes - 默认模式追加缺失规则" {
    cd "$TEST_DIR"
    [ ! -f ".gitattributes" ]

    sh "$SCRIPT_PATH" tsl

    [ -f ".gitattributes" ]
    grep -q "Added from playbook .gitattributes" .gitattributes
    grep -q "\\*.tsl" .gitattributes
}

@test ".gitattributes - 保留现有内容" {
    cd "$TEST_DIR"
    echo "# My custom rules" > .gitattributes
    echo "*.custom binary" >> .gitattributes

    sh "$SCRIPT_PATH" tsl

    grep -q "# My custom rules" .gitattributes
    grep -q "*.custom binary" .gitattributes
}

@test ".gitattributes - 更新已存在的 managed block" {
    cd "$TEST_DIR"
    cat > .gitattributes << 'EOF'
# BEGIN playbook .gitattributes
# Old content
# END playbook .gitattributes
EOF

    export SYNC_GITATTR_MODE=block
    sh "$SCRIPT_PATH" tsl

    # 验证 block 已更新（不再包含 "Old content"）
    ! grep -q "Old content" .gitattributes
}

# ==============================================
# AGENTS.md 自动生成测试
# ==============================================

@test "AGENTS.md - 不存在时自动创建" {
    cd "$TEST_DIR"
    [ ! -f "AGENTS.md" ]

    sh "$SCRIPT_PATH" tsl

    [ -f "AGENTS.md" ]
    grep -q ".agents/" AGENTS.md
}

@test "AGENTS.md - 已存在时不覆盖" {
    cd "$TEST_DIR"
    echo "# My custom AGENTS.md" > AGENTS.md

    sh "$SCRIPT_PATH" tsl

    grep -q "# My custom AGENTS.md" AGENTS.md
}

# ==============================================
# 备份功能测试
# ==============================================

@test "备份 - .gitattributes 更新前创建备份" {
    cd "$TEST_DIR"
    echo "# Original content" > .gitattributes

    sh "$SCRIPT_PATH" tsl

    # 验证备份文件存在
    [ -f ".gitattributes.bak."* ] || [ -f ".gitattributes.bak" ]
}

@test "备份 - .agents/ 更新前创建备份" {
    cd "$TEST_DIR"
    mkdir -p .agents/tsl
    echo "# Old index" > .agents/tsl/index.md

    sh "$SCRIPT_PATH" tsl

    # 验证备份目录存在
    [ -d ".agents/tsl.bak."* ] || [ -d ".agents/tsl.bak" ]
}

# ==============================================
# 多语言项目测试
# ==============================================

@test "多语言 - TSL + C++ + Python 规则集共存" {
    cd "$TEST_DIR"

    # 复制 Python 规则集（如果存在）
    if [ -d "$PLAYBOOK_ROOT/.agents/python" ]; then
        cp -r "$PLAYBOOK_ROOT/.agents/python" docs/standards/playbook/.agents/
    fi

    sh "$SCRIPT_PATH" tsl cpp

    # 验证规则集不互相覆盖
    [ -d ".agents/tsl" ]
    [ -d ".agents/cpp" ]

    # 验证索引文件正确引用
    [ -f ".agents/index.md" ]
}

# ==============================================
# 错误处理测试
# ==============================================

@test "错误处理 - 未找到 playbook 快照时报错" {
    cd "$TEST_DIR"
    rm -rf docs/standards/playbook/.agents

    run sh "$SCRIPT_PATH" tsl

    [ "$status" -ne 0 ]
}

@test "错误处理 - 无效语言参数时报错" {
    cd "$TEST_DIR"

    run sh "$SCRIPT_PATH" invalid_lang

    [ "$status" -ne 0 ]
}

# ==============================================
# 环境变量配置测试
# ==============================================

@test "环境变量 - SYNC_GITATTR_MODE=skip 跳过 .gitattributes" {
    cd "$TEST_DIR"
    export SYNC_GITATTR_MODE=skip

    sh "$SCRIPT_PATH" tsl

    [ ! -f ".gitattributes" ]
}

@test "环境变量 - SYNC_GITATTR_MODE=overwrite 覆盖 .gitattributes" {
    cd "$TEST_DIR"
    echo "# Custom content" > .gitattributes
    export SYNC_GITATTR_MODE=overwrite

    sh "$SCRIPT_PATH" tsl

    # 验证自定义内容被覆盖
    ! grep -q "# Custom content" .gitattributes
}

@test "环境变量 - SYNC_GITATTR_MODE=append 追加缺失规则" {
    cd "$TEST_DIR"
    echo "# Custom rules only" > .gitattributes
    export SYNC_GITATTR_MODE=append

    sh "$SCRIPT_PATH" tsl

    grep -q "Added from playbook .gitattributes" .gitattributes
    grep -q "\\*.tsl" .gitattributes
}

@test "环境变量 - SYNC_GITATTR_MODE=append 无缺失规则不追加" {
    cd "$TEST_DIR"
    cp "$PLAYBOOK_ROOT/.gitattributes" .gitattributes
    export SYNC_GITATTR_MODE=append

    sh "$SCRIPT_PATH" tsl

    ! grep -q "Added from playbook .gitattributes" .gitattributes
}

# ==============================================
# 幂等性测试
# ==============================================

@test "幂等性 - 多次执行结果一致" {
    cd "$TEST_DIR"

    # 第一次同步
    sh "$SCRIPT_PATH" tsl
    CHECKSUM1=$(find .agents/tsl -type f -exec md5sum {} \; | sort | md5sum)

    # 第二次同步
    sh "$SCRIPT_PATH" tsl
    CHECKSUM2=$(find .agents/tsl -type f -exec md5sum {} \; | sort | md5sum)

    [ "$CHECKSUM1" = "$CHECKSUM2" ]
}