#!/usr/bin/env dotnet-script
// Direct KRX API Test
// Purpose: Validate KRX API connectivity and data persistence
// Step 1: Test direct API call → HTTP 200 + data
// Step 2: Verify data saved to krx_imports table
// Step 3: Repeat 5 times for reliability

#r "nuget: System.Net.Http, 4.3.4"
#r "nuget: Npgsql, 8.0.0"
#r "nuget: Dapper, 2.0.151"

using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Text.Json;
using System.Threading.Tasks;
using Npgsql;
using Dapper;

var config = new
{
    ApiKey = Environment.GetEnvironmentVariable("KRX_OPENAPI") ?? "FB391C96F128419AAFB193AB73DD6B8263E0D021",
    BaseUrl = "https://openapi.krx.co.kr",
    Postgres = Environment.GetEnvironmentVariable("KARTSELL_POSTGRES") ??
               "Host=127.0.0.1;Port=5432;Database=kartselldb;Username=kartsell;Password=kartsell4321@!"
};

Console.WriteLine("════════════════════════════════════════════════════════════");
Console.WriteLine("🧪 KRX API 직접 호출 테스트 (API 완성도 검증)");
Console.WriteLine("════════════════════════════════════════════════════════════");
Console.WriteLine("");

// Test parameters
var testDate = "20240102"; // 2024-01-02
var apiEndpoint = $"{config.BaseUrl}/svc/apis/idx/krx_dd_trd";

Console.WriteLine($"테스트 대상: {apiEndpoint}");
Console.WriteLine($"테스트 날짜: {testDate}");
Console.WriteLine("");

int successCount = 0;
int failureCount = 0;

for (int i = 1; i <= 5; i++)
{
    Console.WriteLine($"[시도 {i}/5]");

    try
    {
        using (var client = new HttpClient { Timeout = TimeSpan.FromSeconds(10) })
        {
            // Build request
            var request = new HttpRequestMessage(HttpMethod.Post, apiEndpoint);
            request.Headers.Add("Authorization", $"Bearer {config.ApiKey}");

            var body = new { basDd = testDate };
            var json = JsonSerializer.Serialize(body);
            request.Content = new StringContent(json, System.Text.Encoding.UTF8, "application/json");

            // Send request
            Console.WriteLine($"  요청 중... POST {apiEndpoint}");
            var response = await client.SendAsync(request);

            if (response.IsSuccessStatusCode)
            {
                var content = await response.Content.ReadAsStringAsync();
                var lines = content.Split('\n', StringSplitOptions.RemoveEmptyEntries);

                Console.WriteLine($"  ✅ 성공! HTTP {(int)response.StatusCode}");
                Console.WriteLine($"  응답: {lines.Length} 행");

                if (lines.Length > 1)
                {
                    Console.WriteLine($"  샘플: {lines[0].Substring(0, Math.Min(80, lines[0].Length))}");
                }

                successCount++;

                // Save to DB
                try
                {
                    await using var conn = new NpgsqlConnection(config.Postgres);
                    await conn.OpenAsync();

                    var sql = @"
                        INSERT INTO market_data.krx_imports (import_at, row_count, status, correlation_id)
                        VALUES (@now, @count, 'SUCCESS', @corrId)
                        ON CONFLICT (import_at, row_count) DO NOTHING
                    ";

                    var rows = await conn.ExecuteAsync(sql, new
                    {
                        now = DateTime.UtcNow,
                        count = lines.Length - 1, // exclude header
                        corrId = Guid.NewGuid().ToString()
                    });

                    Console.WriteLine($"  DB: {rows} 행 저장됨");
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"  ⚠️ DB 저장 실패: {ex.Message}");
                }
            }
            else
            {
                Console.WriteLine($"  ❌ 실패! HTTP {(int)response.StatusCode}");
                var errorContent = await response.Content.ReadAsStringAsync();
                Console.WriteLine($"  오류: {errorContent.Substring(0, Math.Min(100, errorContent.Length))}");
                failureCount++;
            }
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine($"  ❌ 예외: {ex.Message}");
        failureCount++;
    }

    Console.WriteLine("");

    // Rate limit: wait 2 seconds between requests
    if (i < 5)
    {
        await Task.Delay(2000);
    }
}

Console.WriteLine("════════════════════════════════════════════════════════════");
Console.WriteLine("📊 테스트 결과");
Console.WriteLine("════════════════════════════════════════════════════════════");
Console.WriteLine($"성공: {successCount}/5");
Console.WriteLine($"실패: {failureCount}/5");
Console.WriteLine("");

if (successCount >= 3)
{
    Console.WriteLine("✅ API 신뢰성 테스트 통과 (3/5 이상 성공)");
    Console.WriteLine("   → 다음 단계: Hangfire 자동화 진행");
}
else
{
    Console.WriteLine("❌ API 신뢰성 미달 (3/5 미만)");
    Console.WriteLine("   → 원인 분석 필요");
}
Console.WriteLine("");

// Verify DB state
try
{
    await using var conn = new NpgsqlConnection(config.Postgres);
    await conn.OpenAsync();

    var count = await conn.QuerySingleAsync<int>(
        "SELECT COUNT(*) FROM market_data.krx_imports");

    Console.WriteLine($"DB 최종 상태: {count} 행 저장됨");
}
catch (Exception ex)
{
    Console.WriteLine($"DB 조회 실패: {ex.Message}");
}

Console.WriteLine("");
Console.WriteLine("테스트 완료.");