91 lines
3.4 KiB
C#
91 lines
3.4 KiB
C#
using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Mvc;
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using System.Security.Cryptography;
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using System.Text;
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using TakeoutSaaS.AdminApi.Contracts.Responses;
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using TakeoutSaaS.Shared.Abstractions.Constants;
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using TakeoutSaaS.Shared.Abstractions.Results;
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using TakeoutSaaS.Shared.Web.Api;
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namespace TakeoutSaaS.AdminApi.Controllers;
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/// <summary>
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/// 腾讯地图脚本签名服务。
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/// </summary>
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[ApiVersion("1.0")]
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[Authorize]
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[Route("api/admin/v{version:apiVersion}/maps")]
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public sealed class TencentMapsController(IConfiguration configuration) : BaseApiController
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{
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private const string DefaultLibraries = "visualization,geometry,vector,tools";
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private const string DefaultCallback = "initGLMap";
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private const string DefaultVersion = "1.exp";
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/// <summary>
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/// 获取腾讯地图 JS 脚本地址（含签名）。
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/// </summary>
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[HttpGet("tencent-js")]
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[ProducesResponseType(typeof(ApiResponse<TencentMapScriptResponse>), StatusCodes.Status200OK)]
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[ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status400BadRequest)]
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public ApiResponse<TencentMapScriptResponse> GetTencentJsScript(
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[FromQuery] string? libraries,
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[FromQuery] string? callback,
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[FromQuery] string? v)
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{
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// 1. 读取配置
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var key = configuration.GetValue<string>("TencentMap:Key");
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var sk = configuration.GetValue<string>("TencentMap:Sk");
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if (string.IsNullOrWhiteSpace(key) || string.IsNullOrWhiteSpace(sk))
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{
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return ApiResponse<TencentMapScriptResponse>.Error(ErrorCodes.BadRequest, "未配置腾讯地图 Key/SK");
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}
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// 2. 规范化参数
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var resolvedLibraries = string.IsNullOrWhiteSpace(libraries) ? DefaultLibraries : libraries;
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var resolvedCallback = string.IsNullOrWhiteSpace(callback) ? DefaultCallback : callback;
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var resolvedVersion = string.IsNullOrWhiteSpace(v) ? DefaultVersion : v;
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// 3. 构建签名
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var parameters = new SortedDictionary<string, string>(StringComparer.Ordinal)
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{
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["callback"] = resolvedCallback,
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["key"] = key,
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["libraries"] = resolvedLibraries,
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["v"] = resolvedVersion
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};
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var queryString = BuildQueryString(parameters);
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var signature = ComputeSignature("/api/gljs", queryString, sk);
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var scriptUrl = $"https://map.qq.com/api/gljs?{queryString}&sig={signature}";
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return ApiResponse<TencentMapScriptResponse>.Ok(new TencentMapScriptResponse(scriptUrl));
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}
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private static string BuildQueryString(IEnumerable<KeyValuePair<string, string>> parameters)
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{
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var builder = new StringBuilder();
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foreach (var (key, value) in parameters)
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{
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if (builder.Length > 0)
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{
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builder.Append('&');
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}
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builder.Append(key);
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builder.Append('=');
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builder.Append(Uri.EscapeDataString(value));
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}
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return builder.ToString();
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}
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private static string ComputeSignature(string path, string queryString, string sk)
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{
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var raw = $"{path}?{queryString}{sk}";
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var hash = MD5.HashData(Encoding.UTF8.GetBytes(raw));
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var builder = new StringBuilder(hash.Length * 2);
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foreach (var b in hash)
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{
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builder.Append(b.ToString("x2"));
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}
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return builder.ToString();
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}
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}
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