#!/bin/bash

# Gitea-Actor 配置脚本
# 版本: 1.0.0

set -e

# 颜色定义
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# 日志函数
log_info() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

log_success() {
    echo -e "${GREEN}[SUCCESS]${NC} $1"
}

log_warn() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

log_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

# 检查依赖
check_dependencies() {
    local deps=("curl" "jq")
    for dep in "${deps[@]}"; do
        if ! command -v "$dep" &> /dev/null; then
            log_error "缺少依赖: $dep"
            log_info "请安装:"
            if [[ "$dep" == "jq" ]]; then
                log_info "  Ubuntu/Debian: sudo apt install jq"
                log_info "  CentOS/RHEL: sudo yum install jq"
                log_info "  macOS: brew install jq"
            fi
            exit 1
        fi
    done
}

# 显示标题
show_header() {
    echo -e "${BLUE}========================================${NC}"
    echo -e "${GREEN}      Gitea-Actor 配置向导${NC}"
    echo -e "${BLUE}========================================${NC}"
    echo ""
}

# 验证 Gitea 连接
test_gitea_connection() {
    local url=$1
    local token=$2
    
    log_info "正在验证 Gitea 连接..."
    
    # 检查 URL 格式
    if [[ ! "$url" =~ ^https?:// ]]; then
        log_error "URL 格式不正确，请使用 http:// 或 https:// 开头"
        return 1
    fi
    
    # 发送测试请求
    local response
    local http_code
    
    response=$(curl -s -w "\n%{http_code}" \
        -H "Authorization: token $token" \
        -H "Accept: application/json" \
        "$url/api/v1/user" 2>/dev/null || true)
    
    http_code=$(echo "$response" | tail -n1)
    local response_body=$(echo "$response" | sed '$d')
    
    if [[ "$http_code" == "200" ]]; then
        local username=$(echo "$response_body" | jq -r '.login // .username' 2>/dev/null || echo "unknown")
        log_success "Gitea 连接成功！"
        log_info "用户: $username"
        return 0
    else
        log_error "Gitea 连接失败 (HTTP $http_code)"
        if [[ -n "$response_body" ]]; then
            log_info "错误信息: $(echo "$response_body" | jq -r '.message // .' 2>/dev/null || echo "$response_body")"
        fi
        return 1
    fi
}

# 主函数
main() {
    show_header
    check_dependencies
    
    # 检查现有配置
    local config_file="$HOME/.gitea-actor.env"
    if [[ -f "$config_file" ]]; then
        log_warn "发现现有配置文件: $config_file"
        echo ""
        log_info "现有配置:"
        grep -E "^(export )?(GITEA_URL|GITEA_TOKEN)=" "$config_file" || true
        echo ""
        
        read -p "是否覆盖现有配置？ (y/N): " -n 1 -r
        echo
        if [[ ! $REPLY =~ ^[Yy]$ ]]; then
            log_info "已取消配置"
            exit 0
        fi
    fi
    
    # 获取 Gitea URL
    local default_url="https://gitea.com"
    echo -e "${YELLOW}提示:${NC} 请输入您的 Gitea 实例 URL"
    echo -e "  例如: https://gitea.example.com"
    echo -e "  或: https://codehub.zlinkcloudtech.com"
    echo ""
    read -p "Gitea URL [默认: $default_url]: " gitea_url
    gitea_url=${gitea_url:-$default_url}
    
    # 移除末尾的斜杠
    gitea_url=$(echo "$gitea_url" | sed 's|/$||')
    
    # 获取访问令牌
    echo ""
    echo -e "${YELLOW}提示:${NC} 请提供个人访问令牌 (Personal Access Token)"
    echo -e "  可以在 Gitea 的 设置 -> 应用 中创建"
    echo ""
    read -p "访问令牌: " gitea_token
    
    if [[ -z "$gitea_token" ]]; then
        log_error "访问令牌不能为空"
        exit 1
    fi
    
    # 测试连接
    echo ""
    if test_gitea_connection "$gitea_url" "$gitea_token"; then
        # 保存配置
        cat > "$config_file" << EOF
# Gitea-Actor 配置文件
# 生成时间: $(date)
export GITEA_URL="$gitea_url"
export GITEA_TOKEN="$gitea_token"

# 使用方式:
# source ~/.gitea-actor.env
# 或添加到 ~/.bashrc / ~/.zshrc
EOF
        
        log_success "配置已保存到: $config_file"
        echo ""
        log_info "使用方法:"
        echo "  1. 立即加载配置: source $config_file"
        echo "  2. 永久生效: 将以下行添加到 ~/.bashrc 或 ~/.zshrc:"
        echo "     source $config_file"
        echo ""
        log_info "验证命令:"
        echo "  curl -s -H \"Authorization: token \$GITEA_TOKEN\" \"\$GITEA_URL/api/v1/user\" | jq ."
        
        # 询问是否立即加载配置
        echo ""
        read -p "是否立即加载配置到当前shell？ (Y/n): " -n 1 -r
        echo
        if [[ ! $REPLY =~ ^[Nn]$ ]]; then
            if source "$config_file" 2>/dev/null; then
                log_success "配置已加载到当前shell"
            else
                log_warn "无法自动加载配置，请手动运行: source $config_file"
            fi
        fi
    else
        log_error "配置失败，请检查URL和令牌是否正确"
        exit 1
    fi
}

# 运行主函数
main "$@"