#!/bin/bash
# =============================================================================
# MOMO Pro System - CI/CD 完整驗證腳本
# 用途: 驗證完整的 CI/CD 流程和一鍵部署自動化
# =============================================================================

set -e

# 顏色定義
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
NC='\033[0m'
BOLD='\033[1m'

# 配置
K3S_HOST="${K3S_HOST:-192.168.0.110}"
K3S_USER="${K3S_USER:-wooo}"
PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"

# 統計
TOTAL_TESTS=0
PASSED_TESTS=0
FAILED_TESTS=0

log_section() {
    echo ""
    echo -e "${CYAN}═══════════════════════════════════════════════════════════════${NC}"
    echo -e "${CYAN}  $1${NC}"
    echo -e "${CYAN}═══════════════════════════════════════════════════════════════${NC}"
}

log_test() {
    echo -e "${BLUE}[TEST]${NC} $1"
    TOTAL_TESTS=$((TOTAL_TESTS + 1))
}

log_pass() {
    echo -e "${GREEN}  ✅ PASS${NC}: $1"
    PASSED_TESTS=$((PASSED_TESTS + 1))
}

log_fail() {
    echo -e "${RED}  ❌ FAIL${NC}: $1"
    FAILED_TESTS=$((FAILED_TESTS + 1))
}

log_skip() {
    echo -e "${YELLOW}  ⏭️ SKIP${NC}: $1"
}

# =============================================================================
# 1. 本地環境檢查
# =============================================================================
verify_local_environment() {
    log_section "1. 本地環境檢查"

    # Docker
    log_test "Docker 是否安裝"
    if command -v docker &> /dev/null; then
        log_pass "Docker 已安裝 ($(docker --version | head -1))"
    else
        log_fail "Docker 未安裝"
    fi

    # Git
    log_test "Git 是否安裝"
    if command -v git &> /dev/null; then
        log_pass "Git 已安裝 ($(git --version))"
    else
        log_fail "Git 未安裝"
    fi

    # SSH
    log_test "SSH 是否可用"
    if command -v ssh &> /dev/null; then
        log_pass "SSH 可用"
    else
        log_fail "SSH 不可用"
    fi

    # 專案目錄
    log_test "專案目錄結構"
    local required_files=("app.py" "Dockerfile" "requirements.txt" "config.py")
    local missing_files=()
    for file in "${required_files[@]}"; do
        if [[ ! -f "$PROJECT_ROOT/$file" ]]; then
            missing_files+=("$file")
        fi
    done
    if [[ ${#missing_files[@]} -eq 0 ]]; then
        log_pass "所有必要檔案存在"
    else
        log_fail "缺少檔案: ${missing_files[*]}"
    fi
}

# =============================================================================
# 2. SSH 連線測試
# =============================================================================
verify_ssh_connection() {
    log_section "2. SSH 連線測試"

    log_test "SSH 連線到 K3s 主機 (${K3S_HOST})"
    if ssh -o ConnectTimeout=10 -o BatchMode=yes "${K3S_USER}@${K3S_HOST}" "echo 'SSH OK'" &>/dev/null; then
        log_pass "SSH 連線成功"
    else
        log_fail "SSH 連線失敗"
        return 1
    fi

    log_test "K3s 主機 Docker 狀態"
    if ssh "${K3S_USER}@${K3S_HOST}" "docker info" &>/dev/null; then
        log_pass "Docker 運行正常"
    else
        log_fail "Docker 未運行或無法訪問"
    fi

    log_test "K3s 叢集狀態"
    if ssh "${K3S_USER}@${K3S_HOST}" "sudo kubectl get nodes" &>/dev/null; then
        log_pass "K3s 叢集正常"
    else
        log_fail "K3s 叢集無法訪問"
    fi
}

# =============================================================================
# 3. K8s 服務狀態
# =============================================================================
verify_k8s_services() {
    log_section "3. K8s 服務狀態"

    log_test "momo namespace 存在"
    if ssh "${K3S_USER}@${K3S_HOST}" "sudo kubectl get namespace momo" &>/dev/null; then
        log_pass "momo namespace 存在"
    else
        log_fail "momo namespace 不存在"
        return 1
    fi

    log_test "momo-app Pod 狀態"
    local app_status=$(ssh "${K3S_USER}@${K3S_HOST}" "sudo kubectl get pod -n momo -l app=momo-app -o jsonpath='{.items[0].status.phase}'" 2>/dev/null)
    if [[ "$app_status" == "Running" ]]; then
        log_pass "momo-app 運行中"
    else
        log_fail "momo-app 狀態異常: $app_status"
    fi

    log_test "momo-postgres Pod 狀態"
    local pg_status=$(ssh "${K3S_USER}@${K3S_HOST}" "sudo kubectl get pod -n momo momo-postgres-0 -o jsonpath='{.status.phase}'" 2>/dev/null)
    if [[ "$pg_status" == "Running" ]]; then
        log_pass "momo-postgres 運行中"
    else
        log_fail "momo-postgres 狀態異常: $pg_status"
    fi

    log_test "momo-scheduler Pod 狀態"
    local sched_status=$(ssh "${K3S_USER}@${K3S_HOST}" "sudo kubectl get pod -n momo -l app=momo-scheduler -o jsonpath='{.items[0].status.phase}'" 2>/dev/null)
    if [[ "$sched_status" == "Running" ]]; then
        log_pass "momo-scheduler 運行中"
    else
        log_fail "momo-scheduler 狀態異常: $sched_status"
    fi
}

# =============================================================================
# 4. 應用健康檢查
# =============================================================================
verify_app_health() {
    log_section "4. 應用健康檢查"

    log_test "HTTPS 端點可訪問 (mo.wooo.work)"
    local health_response=$(curl -s -m 10 https://mo.wooo.work/health 2>/dev/null)
    if echo "$health_response" | grep -q "healthy"; then
        log_pass "應用健康 ($health_response)"
    else
        log_fail "應用健康檢查失敗"
    fi

    log_test "資料庫連線"
    local db_test=$(ssh "${K3S_USER}@${K3S_HOST}" "sudo kubectl exec -n momo momo-postgres-0 -- psql -U momo -d momo_analytics -c 'SELECT 1'" 2>/dev/null)
    if echo "$db_test" | grep -q "1"; then
        log_pass "資料庫連線正常"
    else
        log_fail "資料庫連線失敗"
    fi
}

# =============================================================================
# 5. CI/CD 檔案驗證
# =============================================================================
verify_cicd_files() {
    log_section "5. CI/CD 檔案驗證"

    log_test ".gitlab-ci-simple.yml 存在"
    if [[ -f "$PROJECT_ROOT/.gitlab-ci-simple.yml" ]]; then
        log_pass "簡化版 CI 配置存在"
    else
        log_fail "簡化版 CI 配置不存在"
    fi

    log_test "build-and-deploy.sh 存在且可執行"
    if [[ -x "$PROJECT_ROOT/scripts/deploy/build-and-deploy.sh" ]]; then
        log_pass "部署腳本存在且可執行"
    else
        log_fail "部署腳本不存在或不可執行"
    fi

    log_test "deploy/deploy.sh 存在且可執行"
    if [[ -x "$PROJECT_ROOT/deploy/deploy.sh" ]]; then
        log_pass "一鍵部署腳本存在且可執行"
    else
        log_fail "一鍵部署腳本不存在或不可執行"
    fi

    log_test "K8s 配置檔案完整"
    local k8s_files=("00-namespace.yaml" "01-secrets.yaml" "02-configmap.yaml" "03-postgres.yaml" "04-momo-app.yaml" "05-scheduler.yaml")
    local missing_k8s=()
    for file in "${k8s_files[@]}"; do
        if [[ ! -f "$PROJECT_ROOT/k8s/$file" ]]; then
            missing_k8s+=("$file")
        fi
    done
    if [[ ${#missing_k8s[@]} -eq 0 ]]; then
        log_pass "所有 K8s 配置存在"
    else
        log_fail "缺少 K8s 配置: ${missing_k8s[*]}"
    fi
}

# =============================================================================
# 6. 自動啟動驗證
# =============================================================================
verify_auto_start() {
    log_section "6. 系統自動啟動驗證"

    log_test "momo-startup-complete.service 已啟用"
    local service_status=$(ssh "${K3S_USER}@${K3S_HOST}" "systemctl is-enabled momo-startup-complete.service 2>/dev/null" || echo "not-found")
    if [[ "$service_status" == "enabled" ]]; then
        log_pass "自動啟動服務已啟用"
    else
        log_fail "自動啟動服務未啟用 ($service_status)"
    fi

    log_test "啟動腳本存在"
    local script_exists=$(ssh "${K3S_USER}@${K3S_HOST}" "test -f /home/wooo/momo_pro_system/scripts/tools/system_startup_complete.sh && echo 'yes'" 2>/dev/null)
    if [[ "$script_exists" == "yes" ]]; then
        log_pass "啟動腳本存在"
    else
        log_fail "啟動腳本不存在"
    fi
}

# =============================================================================
# 7. 端對端部署測試（可選）
# =============================================================================
verify_e2e_deploy() {
    log_section "7. 端對端部署測試（模擬）"

    log_test "本地 Docker 建置"
    echo "  執行: docker build -t momo-pro-system:test ."
    if docker build -t momo-pro-system:test "$PROJECT_ROOT" -q &>/dev/null; then
        log_pass "本地 Docker 建置成功"
        docker rmi momo-pro-system:test &>/dev/null || true
    else
        log_fail "本地 Docker 建置失敗"
    fi

    log_test "rsync 同步測試（dry-run）"
    if rsync -avzn --delete --exclude='.git' --exclude='venv' --exclude='__pycache__' "$PROJECT_ROOT/" "${K3S_USER}@${K3S_HOST}:/tmp/rsync-test/" &>/dev/null; then
        log_pass "rsync 同步可行"
    else
        log_fail "rsync 同步失敗"
    fi
}

# =============================================================================
# 8. 監控系統驗證
# =============================================================================
verify_monitoring() {
    log_section "8. 監控系統驗證"

    log_test "Prometheus 運行中"
    local prom_pods=$(ssh "${K3S_USER}@${K3S_HOST}" "sudo kubectl get pods -n monitoring -l app.kubernetes.io/name=prometheus -o jsonpath='{.items[*].status.phase}'" 2>/dev/null)
    if echo "$prom_pods" | grep -q "Running"; then
        log_pass "Prometheus 運行中"
    else
        log_skip "Prometheus 未部署或未運行"
    fi

    log_test "Alertmanager 運行中"
    local am_pods=$(ssh "${K3S_USER}@${K3S_HOST}" "sudo kubectl get pods -n monitoring -l app.kubernetes.io/name=alertmanager -o jsonpath='{.items[*].status.phase}'" 2>/dev/null)
    if echo "$am_pods" | grep -q "Running"; then
        log_pass "Alertmanager 運行中"
    else
        log_skip "Alertmanager 未部署或未運行"
    fi
}

# =============================================================================
# 輸出總結
# =============================================================================
print_summary() {
    log_section "驗證結果總結"

    echo ""
    echo -e "  ${BOLD}總測試數:${NC} $TOTAL_TESTS"
    echo -e "  ${GREEN}通過:${NC}     $PASSED_TESTS"
    echo -e "  ${RED}失敗:${NC}     $FAILED_TESTS"
    echo ""

    if [[ $FAILED_TESTS -eq 0 ]]; then
        echo -e "${GREEN}═══════════════════════════════════════════════════════════════${NC}"
        echo -e "${GREEN}  ✅ 所有驗證通過！CI/CD 流程準備就緒${NC}"
        echo -e "${GREEN}═══════════════════════════════════════════════════════════════${NC}"
        return 0
    else
        echo -e "${RED}═══════════════════════════════════════════════════════════════${NC}"
        echo -e "${RED}  ❌ 有 $FAILED_TESTS 項驗證失敗，請檢查並修復${NC}"
        echo -e "${RED}═══════════════════════════════════════════════════════════════${NC}"
        return 1
    fi
}

# =============================================================================
# 主程式
# =============================================================================
main() {
    echo ""
    echo -e "${CYAN}╔═══════════════════════════════════════════════════════════════════════════╗${NC}"
    echo -e "${CYAN}║${NC}           ${BOLD}MOMO Pro System - CI/CD 完整驗證${NC}                              ${CYAN}║${NC}"
    echo -e "${CYAN}║${NC}                       ${BOLD}$(date '+%Y-%m-%d %H:%M:%S')${NC}                             ${CYAN}║${NC}"
    echo -e "${CYAN}╚═══════════════════════════════════════════════════════════════════════════╝${NC}"

    verify_local_environment
    verify_ssh_connection
    verify_k8s_services
    verify_app_health
    verify_cicd_files
    verify_auto_start
    verify_e2e_deploy
    verify_monitoring

    print_summary
}

main "$@"