// List + fetch AI transcripts from a CodeB tenant (.NET 6+).
// European Digital Identity Wallet-enabled tenants use the same key surface.
// [compliance-archive-cookbook 2026-07-23]
//
// Endpoints live-verified in signal.ashx:
//   GET signal.ashx?list-transcripts=1
//   GET signal.ashx?get-transcript=<basename>.json

using System;
using System.IO;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text.Json;
using System.Threading.Tasks;

class FetchTranscripts
{
    static async Task Main()
    {
        var tenant = Environment.GetEnvironmentVariable("CODEB_TENANT") ?? "https://<CODEB_TENANT_HOST>";
        var apiKey = Environment.GetEnvironmentVariable("CODEB_API_KEY");
        var outDir = Environment.GetEnvironmentVariable("OUT_DIR") ?? "./codeb-transcripts";
        if (string.IsNullOrEmpty(apiKey)) { Console.Error.WriteLine("CODEB_API_KEY not set"); Environment.Exit(2); }
        Directory.CreateDirectory(outDir);

        using var http = new HttpClient { BaseAddress = new Uri(tenant) };
        http.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", apiKey);

        var idxJson = await http.GetStringAsync("/signal.ashx?list-transcripts=1");
        using var doc = JsonDocument.Parse(idxJson);
        if (!doc.RootElement.TryGetProperty("items", out var items)) return;
        Console.WriteLine($"[list] {items.GetArrayLength()} transcripts");
        foreach (var it in items.EnumerateArray())
        {
            if (!it.TryGetProperty("file", out var f)) continue;
            var name = f.GetString();
            if (string.IsNullOrEmpty(name)) continue;
            var body = await http.GetStringAsync("/signal.ashx?get-transcript=" + Uri.EscapeDataString(name));
            await File.WriteAllTextAsync(Path.Combine(outDir, name), body);
            using var d = JsonDocument.Parse(body);
            int turns = d.RootElement.TryGetProperty("_transcriptTurns", out var t) ? t.GetArrayLength() : 0;
            Console.WriteLine($"[fetch] {name} turns={turns}");
        }
    }
}