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// Copyright (c) Zhongkai Fu. All rights reserved.
// https://github.com/zhongkaifu/TensorSharp
//
// This file is part of TensorSharp.
//
// TensorSharp is licensed under the BSD-3-Clause license found in the LICENSE file in the root directory of this source tree.
//
// TensorSharp is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the BSD-3-Clause License for more details.
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.Json;
using InferenceEngine;
using InferenceWeb;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddSingleton<ModelService>();
string webRoot = builder.Environment.WebRootPath;
if (string.IsNullOrEmpty(webRoot) || !Directory.Exists(webRoot))
{
string srcWwwRoot = Path.Combine(AppContext.BaseDirectory, "..", "wwwroot");
if (Directory.Exists(srcWwwRoot))
webRoot = Path.GetFullPath(srcWwwRoot);
else
webRoot = Path.Combine(AppContext.BaseDirectory, "wwwroot");
builder.Environment.WebRootPath = webRoot;
Directory.CreateDirectory(webRoot);
}
var app = builder.Build();
app.UseStaticFiles();
string uploadDir = Path.Combine(AppContext.BaseDirectory, "uploads");
Directory.CreateDirectory(uploadDir);
app.UseStaticFiles(new Microsoft.AspNetCore.Builder.StaticFileOptions
{
FileProvider = new Microsoft.Extensions.FileProviders.PhysicalFileProvider(uploadDir),
RequestPath = "/uploads"
});
string modelDir = Environment.GetEnvironmentVariable("MODEL_DIR")
?? Path.Combine(AppContext.BaseDirectory, "models");
string defaultBackend = Environment.GetEnvironmentVariable("BACKEND") ?? "ggml_metal";
// ============================================================
// Internal Web UI endpoints (original)
// ============================================================
app.MapGet("/api/models", (ModelService svc) =>
{
var files = svc.ScanModels(modelDir);
return Results.Json(new
{
models = files,
loaded = svc.LoadedModelName,
architecture = svc.Architecture,
modelDir
});
});
app.MapPost("/api/models/load", async (HttpRequest req, ModelService svc) =>
{
var body = await JsonSerializer.DeserializeAsync<JsonElement>(req.Body);
string modelName = body.GetProperty("model").GetString();
string backend = body.TryGetProperty("backend", out var b) ? b.GetString() : defaultBackend;
string mmproj = body.TryGetProperty("mmproj", out var m) ? m.GetString() : null;
string modelPath = Path.Combine(modelDir, modelName);
if (!File.Exists(modelPath))
return Results.NotFound(new { error = $"Model not found: {modelName}" });
string mmProjPath = mmproj != null ? Path.Combine(modelDir, mmproj) : null;
try
{
svc.LoadModel(modelPath, mmProjPath, backend);
return Results.Json(new
{
ok = true,
model = svc.LoadedModelName,
architecture = svc.Architecture
});
}
catch (Exception ex)
{
return Results.Json(new { ok = false, error = ex.Message }, statusCode: 500);
}
});
app.MapPost("/api/upload", async (HttpRequest req) =>
{
if (!req.HasFormContentType)
return Results.BadRequest(new { error = "Expected multipart form data" });
var form = await req.ReadFormAsync();
var file = form.Files.FirstOrDefault();
if (file == null)
return Results.BadRequest(new { error = "No file uploaded" });
string ext = Path.GetExtension(file.FileName).ToLowerInvariant();
string safeFileName = $"{Guid.NewGuid():N}{ext}";
string savePath = Path.Combine(uploadDir, safeFileName);
using (var stream = File.Create(savePath))
await file.CopyToAsync(stream);
string mediaType = ext switch
{
".png" or ".jpg" or ".jpeg" or ".gif" or ".webp" or ".bmp" => "image",
".mp4" or ".mov" or ".avi" or ".mkv" or ".webm" => "video",
".mp3" or ".wav" or ".ogg" or ".flac" or ".m4a" => "audio",
_ => "unknown"
};
if (mediaType == "video")
{
var frames = MediaHelper.ExtractVideoFrames(savePath);
return Results.Json(new
{
ok = true,
path = savePath,
mediaType,
fileName = file.FileName,
frames = frames.Select(f => Path.GetFileName(f)).ToList(),
framePaths = frames
});
}
return Results.Json(new { ok = true, path = savePath, mediaType, fileName = file.FileName });
});
app.MapPost("/api/chat", async (HttpContext ctx, ModelService svc) =>
{
if (!svc.IsLoaded)
{
ctx.Response.StatusCode = 400;
await ctx.Response.WriteAsJsonAsync(new { error = "No model loaded" });
return;
}
var body = await JsonSerializer.DeserializeAsync<JsonElement>(ctx.Request.Body);
var messagesEl = body.GetProperty("messages");
int maxTokens = body.TryGetProperty("maxTokens", out var mt) ? mt.GetInt32() : 200;
var samplingConfig = ParseSamplingConfig(body);
var messages = new List<ChatMessage>();
foreach (var msgEl in messagesEl.EnumerateArray())
{
var msg = new ChatMessage
{
Role = msgEl.GetProperty("role").GetString(),
Content = msgEl.GetProperty("content").GetString()
};
if (msgEl.TryGetProperty("imagePaths", out var imgs) && imgs.GetArrayLength() > 0)
msg.ImagePaths = imgs.EnumerateArray().Select(e => e.GetString()).ToList();
if (msgEl.TryGetProperty("audioPaths", out var auds) && auds.GetArrayLength() > 0)
msg.AudioPaths = auds.EnumerateArray().Select(e => e.GetString()).ToList();
if (msgEl.TryGetProperty("isVideo", out var iv))
msg.IsVideo = iv.GetBoolean();
messages.Add(msg);
}
ctx.Response.ContentType = "text/event-stream";
ctx.Response.Headers["Cache-Control"] = "no-cache";
ctx.Response.Headers["Connection"] = "keep-alive";
var writer = ctx.Response.BodyWriter;
var sw = Stopwatch.StartNew();
int tokenCount = 0;
try
{
await foreach (var piece in svc.ChatStreamAsync(messages, maxTokens, ctx.RequestAborted, samplingConfig))
{
tokenCount++;
string data = JsonSerializer.Serialize(new { token = piece });
await ctx.Response.WriteAsync($"data: {data}\n\n", ctx.RequestAborted);
await ctx.Response.Body.FlushAsync(ctx.RequestAborted);
}
}
catch (OperationCanceledException) { }
sw.Stop();
double tokPerSec = tokenCount > 0 ? tokenCount / sw.Elapsed.TotalSeconds : 0;
string done = JsonSerializer.Serialize(new { done = true, tokenCount, elapsed = sw.Elapsed.TotalSeconds, tokPerSec });
await ctx.Response.WriteAsync($"data: {done}\n\n");
await ctx.Response.Body.FlushAsync();
});
// ============================================================
// Ollama-compatible API endpoints
// ============================================================
app.MapGet("/", () => Results.Ok("InferenceWeb is running"));
app.MapGet("/api/version", () => Results.Json(new { version = "0.1.0" }));
app.MapGet("/api/tags", (ModelService svc) =>
{
var files = svc.ScanModels(modelDir);
var models = files.Select(f =>
{
var fi = new FileInfo(Path.Combine(modelDir, f));
return new Dictionary<string, object>
{
["name"] = Path.GetFileNameWithoutExtension(f),
["model"] = f,
["size"] = fi.Exists ? fi.Length : 0,
["modified_at"] = fi.Exists ? fi.LastWriteTimeUtc.ToString("o") : ""
};
}).ToList();
return Results.Json(new { models });
});
app.MapPost("/api/show", async (HttpContext ctx, ModelService svc) =>
{
var body = await JsonSerializer.DeserializeAsync<JsonElement>(ctx.Request.Body);
if (!body.TryGetProperty("model", out var modelProp) || string.IsNullOrWhiteSpace(modelProp.GetString()))
{
ctx.Response.StatusCode = 400;
await ctx.Response.WriteAsJsonAsync(new { error = "model is required" });
return;
}
string modelName = modelProp.GetString();
string modelPath = ResolveModelPath(modelName, modelDir);
if (modelPath == null)
{
ctx.Response.StatusCode = 404;
await ctx.Response.WriteAsJsonAsync(new { error = $"model '{modelName}' not found" });
return;
}
var fi = new FileInfo(modelPath);
await ctx.Response.WriteAsJsonAsync(new
{
modelfile = "",
parameters = "",
template = "",
details = new
{
format = "gguf",
family = svc.IsLoaded && svc.LoadedModelName == Path.GetFileName(modelPath) ? svc.Architecture : "",
},
model_info = new
{
file = Path.GetFileName(modelPath),
size = fi.Length,
}
});
});
app.MapPost("/api/generate", async (HttpContext ctx, ModelService svc) =>
{
var body = await JsonSerializer.DeserializeAsync<JsonElement>(ctx.Request.Body);
if (!body.TryGetProperty("model", out var modelProp) || string.IsNullOrWhiteSpace(modelProp.GetString()))
{
ctx.Response.StatusCode = 400;
await ctx.Response.WriteAsJsonAsync(new { error = "model is required" });
return;
}
string modelName = modelProp.GetString();
if (!svc.EnsureModelLoaded(modelName, modelDir, defaultBackend))
{
ctx.Response.StatusCode = 404;
await ctx.Response.WriteAsJsonAsync(new { error = $"model '{modelName}' not found" });
return;
}
string prompt = body.TryGetProperty("prompt", out var pp) ? pp.GetString() ?? "" : "";
bool stream = true;
if (body.TryGetProperty("stream", out var streamProp)) stream = streamProp.GetBoolean();
int maxTokens = 200;
var samplingConfig = ParseOllamaOptions(body);
if (body.TryGetProperty("options", out var opts) && opts.TryGetProperty("num_predict", out var np))
maxTokens = np.GetInt32();
var imagePaths = DecodeBase64Images(body, uploadDir);
if (stream)
{
ctx.Response.ContentType = "application/x-ndjson";
ctx.Response.Headers["Cache-Control"] = "no-cache";
await foreach (var (piece, done, promptTokens, evalTokens, totalNs, promptNs, evalNs)
in svc.GenerateStreamAsync(prompt, imagePaths, maxTokens, ctx.RequestAborted, samplingConfig))
{
object resp;
if (!done)
{
resp = new
{
model = svc.LoadedModelName,
created_at = DateTime.UtcNow.ToString("o"),
response = piece,
done = false
};
}
else
{
resp = new
{
model = svc.LoadedModelName,
created_at = DateTime.UtcNow.ToString("o"),
response = "",
done = true,
done_reason = "stop",
total_duration = totalNs,
prompt_eval_count = promptTokens,
prompt_eval_duration = promptNs,
eval_count = evalTokens,
eval_duration = evalNs
};
}
await ctx.Response.WriteAsync(JsonSerializer.Serialize(resp) + "\n", ctx.RequestAborted);
await ctx.Response.Body.FlushAsync(ctx.RequestAborted);
}
}
else
{
var sb = new StringBuilder();
int promptTokens = 0, evalTokens = 0;
long totalNs = 0, promptNs = 0, evalNs = 0;
await foreach (var (piece, done, pt, et, tn, pn, en)
in svc.GenerateStreamAsync(prompt, imagePaths, maxTokens, ctx.RequestAborted, samplingConfig))
{
if (!done)
sb.Append(piece);
else
{
promptTokens = pt; evalTokens = et;
totalNs = tn; promptNs = pn; evalNs = en;
}
}
await ctx.Response.WriteAsJsonAsync(new
{
model = svc.LoadedModelName,
created_at = DateTime.UtcNow.ToString("o"),
response = sb.ToString(),
done = true,
done_reason = "stop",
total_duration = totalNs,
prompt_eval_count = promptTokens,
prompt_eval_duration = promptNs,
eval_count = evalTokens,
eval_duration = evalNs
});
}
});
app.MapPost("/api/chat/ollama", async (HttpContext ctx, ModelService svc) =>
{
var body = await JsonSerializer.DeserializeAsync<JsonElement>(ctx.Request.Body);
if (!body.TryGetProperty("model", out var modelProp) || string.IsNullOrWhiteSpace(modelProp.GetString()))
{
ctx.Response.StatusCode = 400;
await ctx.Response.WriteAsJsonAsync(new { error = "model is required" });
return;
}
string modelName = modelProp.GetString();
if (!svc.EnsureModelLoaded(modelName, modelDir, defaultBackend))
{
ctx.Response.StatusCode = 404;
await ctx.Response.WriteAsJsonAsync(new { error = $"model '{modelName}' not found" });
return;
}
if (!body.TryGetProperty("messages", out var messagesEl) || messagesEl.ValueKind != JsonValueKind.Array)
{
ctx.Response.StatusCode = 400;
await ctx.Response.WriteAsJsonAsync(new { error = "messages is required" });
return;
}
bool stream = true;
if (body.TryGetProperty("stream", out var streamProp)) stream = streamProp.GetBoolean();
int maxTokens = 200;
var samplingConfig = ParseOllamaOptions(body);
if (body.TryGetProperty("options", out var opts) && opts.TryGetProperty("num_predict", out var np))
maxTokens = np.GetInt32();
var messages = ParseOllamaMessages(messagesEl, uploadDir);
if (stream)
{
ctx.Response.ContentType = "application/x-ndjson";
ctx.Response.Headers["Cache-Control"] = "no-cache";
await foreach (var (piece, done, promptTokens, evalTokens, totalNs, promptNs, evalNs)
in svc.ChatStreamWithMetricsAsync(messages, maxTokens, ctx.RequestAborted, samplingConfig))
{
object resp;
if (!done)
{
resp = new
{
model = svc.LoadedModelName,
created_at = DateTime.UtcNow.ToString("o"),
message = new { role = "assistant", content = piece },
done = false
};
}
else
{
resp = new
{
model = svc.LoadedModelName,
created_at = DateTime.UtcNow.ToString("o"),
message = new { role = "assistant", content = "" },
done = true,
done_reason = "stop",
total_duration = totalNs,
prompt_eval_count = promptTokens,
prompt_eval_duration = promptNs,
eval_count = evalTokens,
eval_duration = evalNs
};
}
await ctx.Response.WriteAsync(JsonSerializer.Serialize(resp) + "\n", ctx.RequestAborted);
await ctx.Response.Body.FlushAsync(ctx.RequestAborted);
}
}
else
{
var sb = new StringBuilder();
int promptTokens = 0, evalTokens = 0;
long totalNs = 0, promptNs = 0, evalNs = 0;
await foreach (var (piece, done, pt, et, tn, pn, en)
in svc.ChatStreamWithMetricsAsync(messages, maxTokens, ctx.RequestAborted, samplingConfig))
{
if (!done)
sb.Append(piece);
else
{
promptTokens = pt; evalTokens = et;
totalNs = tn; promptNs = pn; evalNs = en;
}
}
await ctx.Response.WriteAsJsonAsync(new
{
model = svc.LoadedModelName,
created_at = DateTime.UtcNow.ToString("o"),
message = new { role = "assistant", content = sb.ToString() },
done = true,
done_reason = "stop",
total_duration = totalNs,
prompt_eval_count = promptTokens,
prompt_eval_duration = promptNs,
eval_count = evalTokens,
eval_duration = evalNs
});
}
});
// ============================================================
// OpenAI-compatible API endpoint
// ============================================================
app.MapPost("/v1/chat/completions", async (HttpContext ctx, ModelService svc) =>
{
var body = await JsonSerializer.DeserializeAsync<JsonElement>(ctx.Request.Body);
if (!body.TryGetProperty("model", out var modelProp) || string.IsNullOrWhiteSpace(modelProp.GetString()))
{
ctx.Response.StatusCode = 400;
await ctx.Response.WriteAsJsonAsync(new { error = new { message = "model is required", type = "invalid_request_error" } });
return;
}
string modelName = modelProp.GetString();
if (!svc.EnsureModelLoaded(modelName, modelDir, defaultBackend))
{
ctx.Response.StatusCode = 404;
await ctx.Response.WriteAsJsonAsync(new { error = new { message = $"model '{modelName}' not found", type = "invalid_request_error" } });
return;
}
if (!body.TryGetProperty("messages", out var messagesEl) || messagesEl.ValueKind != JsonValueKind.Array)
{
ctx.Response.StatusCode = 400;
await ctx.Response.WriteAsJsonAsync(new { error = new { message = "messages is required", type = "invalid_request_error" } });
return;
}
bool stream = body.TryGetProperty("stream", out var streamProp) && streamProp.GetBoolean();
int maxTokens = body.TryGetProperty("max_tokens", out var mtProp) ? mtProp.GetInt32() : 200;
var samplingConfig = ParseOpenAIOptions(body);
var messages = ParseOpenAIMessages(messagesEl, uploadDir);
string requestId = $"chatcmpl-{Guid.NewGuid():N}".Substring(0, 30);
if (stream)
{
ctx.Response.ContentType = "text/event-stream";
ctx.Response.Headers["Cache-Control"] = "no-cache";
await foreach (var (piece, done, promptTokens, evalTokens, totalNs, promptNs, evalNs)
in svc.ChatStreamWithMetricsAsync(messages, maxTokens, ctx.RequestAborted, samplingConfig))
{
if (!done)
{
var chunk = new
{
id = requestId,
@object = "chat.completion.chunk",
created = DateTimeOffset.UtcNow.ToUnixTimeSeconds(),
model = svc.LoadedModelName,
choices = new[]
{
new
{
index = 0,
delta = new { role = (string)null, content = piece },
finish_reason = (string)null
}
}
};
await ctx.Response.WriteAsync($"data: {JsonSerializer.Serialize(chunk)}\n\n", ctx.RequestAborted);
await ctx.Response.Body.FlushAsync(ctx.RequestAborted);
}
else
{
var chunk = new
{
id = requestId,
@object = "chat.completion.chunk",
created = DateTimeOffset.UtcNow.ToUnixTimeSeconds(),
model = svc.LoadedModelName,
choices = new[]
{
new
{
index = 0,
delta = new { role = (string)null, content = (string)null },
finish_reason = "stop"
}
},
usage = new
{
prompt_tokens = promptTokens,
completion_tokens = evalTokens,
total_tokens = promptTokens + evalTokens
}
};
await ctx.Response.WriteAsync($"data: {JsonSerializer.Serialize(chunk)}\n\n", ctx.RequestAborted);
await ctx.Response.WriteAsync("data: [DONE]\n\n", ctx.RequestAborted);
await ctx.Response.Body.FlushAsync(ctx.RequestAborted);
}
}
}
else
{
var sb = new StringBuilder();
int promptTokens = 0, evalTokens = 0;
await foreach (var (piece, done, pt, et, tn, pn, en)
in svc.ChatStreamWithMetricsAsync(messages, maxTokens, ctx.RequestAborted, samplingConfig))
{
if (!done)
sb.Append(piece);
else { promptTokens = pt; evalTokens = et; }
}
await ctx.Response.WriteAsJsonAsync(new
{
id = requestId,
@object = "chat.completion",
created = DateTimeOffset.UtcNow.ToUnixTimeSeconds(),
model = svc.LoadedModelName,
choices = new[]
{
new
{
index = 0,
message = new { role = "assistant", content = sb.ToString() },
finish_reason = "stop"
}
},
usage = new
{
prompt_tokens = promptTokens,
completion_tokens = evalTokens,
total_tokens = promptTokens + evalTokens
}
});
}
});
app.MapGet("/v1/models", (ModelService svc) =>
{
var files = svc.ScanModels(modelDir);
var data = files.Select(f => new Dictionary<string, object>
{
["id"] = Path.GetFileNameWithoutExtension(f),
["object"] = "model",
["owned_by"] = "local"
}).ToList();
return Results.Json(new { @object = "list", data });
});
app.MapFallback(async ctx =>
{
string root = app.Environment.WebRootPath;
if (root != null)
{
var indexPath = Path.Combine(root, "index.html");
if (File.Exists(indexPath))
{
ctx.Response.ContentType = "text/html";
await ctx.Response.SendFileAsync(indexPath);
return;
}
}
ctx.Response.StatusCode = 404;
await ctx.Response.WriteAsync("index.html not found. WebRootPath: " + (root ?? "(null)"));
});
// ============================================================
// Helper functions
// ============================================================
static SamplingConfig ParseSamplingConfig(JsonElement body)
{
var cfg = new SamplingConfig();
if (body.TryGetProperty("temperature", out var temp))
cfg.Temperature = temp.GetSingle();
if (body.TryGetProperty("top_k", out var tk))
cfg.TopK = tk.GetInt32();
if (body.TryGetProperty("topK", out var tk2))
cfg.TopK = tk2.GetInt32();
if (body.TryGetProperty("top_p", out var tp))
cfg.TopP = tp.GetSingle();
if (body.TryGetProperty("topP", out var tp2))
cfg.TopP = tp2.GetSingle();
if (body.TryGetProperty("min_p", out var mp))
cfg.MinP = mp.GetSingle();
if (body.TryGetProperty("minP", out var mp2))
cfg.MinP = mp2.GetSingle();
if (body.TryGetProperty("repetition_penalty", out var rp))
cfg.RepetitionPenalty = rp.GetSingle();
if (body.TryGetProperty("repetitionPenalty", out var rp2))
cfg.RepetitionPenalty = rp2.GetSingle();
if (body.TryGetProperty("presence_penalty", out var pp))
cfg.PresencePenalty = pp.GetSingle();
if (body.TryGetProperty("presencePenalty", out var pp2))
cfg.PresencePenalty = pp2.GetSingle();
if (body.TryGetProperty("frequency_penalty", out var fp))
cfg.FrequencyPenalty = fp.GetSingle();
if (body.TryGetProperty("frequencyPenalty", out var fp2))
cfg.FrequencyPenalty = fp2.GetSingle();
if (body.TryGetProperty("seed", out var sd))
cfg.Seed = sd.GetInt32();
if (body.TryGetProperty("stop", out var stopEl) && stopEl.ValueKind == JsonValueKind.Array)
{
cfg.StopSequences = new List<string>();
foreach (var s in stopEl.EnumerateArray())
if (s.GetString() is string sv)
cfg.StopSequences.Add(sv);
}
return cfg;
}
static SamplingConfig ParseOllamaOptions(JsonElement body)
{
var cfg = new SamplingConfig();
if (body.TryGetProperty("options", out var opts))
{
if (opts.TryGetProperty("temperature", out var temp)) cfg.Temperature = temp.GetSingle();
if (opts.TryGetProperty("top_k", out var tk)) cfg.TopK = tk.GetInt32();
if (opts.TryGetProperty("top_p", out var tp)) cfg.TopP = tp.GetSingle();
if (opts.TryGetProperty("min_p", out var mp)) cfg.MinP = mp.GetSingle();
if (opts.TryGetProperty("repeat_penalty", out var rp)) cfg.RepetitionPenalty = rp.GetSingle();
if (opts.TryGetProperty("presence_penalty", out var pp)) cfg.PresencePenalty = pp.GetSingle();
if (opts.TryGetProperty("frequency_penalty", out var fp)) cfg.FrequencyPenalty = fp.GetSingle();
if (opts.TryGetProperty("seed", out var sd)) cfg.Seed = sd.GetInt32();
if (opts.TryGetProperty("stop", out var stopEl) && stopEl.ValueKind == JsonValueKind.Array)
{
cfg.StopSequences = new List<string>();
foreach (var s in stopEl.EnumerateArray())
if (s.GetString() is string sv) cfg.StopSequences.Add(sv);
}
}
return cfg;
}
static SamplingConfig ParseOpenAIOptions(JsonElement body)
{
var cfg = new SamplingConfig();
if (body.TryGetProperty("temperature", out var temp)) cfg.Temperature = temp.GetSingle();
if (body.TryGetProperty("top_p", out var tp)) cfg.TopP = tp.GetSingle();
if (body.TryGetProperty("presence_penalty", out var pp)) cfg.PresencePenalty = pp.GetSingle();
if (body.TryGetProperty("frequency_penalty", out var fp)) cfg.FrequencyPenalty = fp.GetSingle();
if (body.TryGetProperty("seed", out var sd)) cfg.Seed = sd.GetInt32();
if (body.TryGetProperty("stop", out var stopEl))
{
cfg.StopSequences = new List<string>();
if (stopEl.ValueKind == JsonValueKind.Array)
{
foreach (var s in stopEl.EnumerateArray())
if (s.GetString() is string stopVal) cfg.StopSequences.Add(stopVal);
}
else if (stopEl.ValueKind == JsonValueKind.String && stopEl.GetString() is string singleStop)
{
cfg.StopSequences.Add(singleStop);
}
}
return cfg;
}
static List<ChatMessage> ParseOllamaMessages(JsonElement messagesEl, string uploadDir)
{
var messages = new List<ChatMessage>();
foreach (var msgEl in messagesEl.EnumerateArray())
{
var msg = new ChatMessage
{
Role = msgEl.TryGetProperty("role", out var r) ? r.GetString() : "user",
Content = msgEl.TryGetProperty("content", out var c) ? c.GetString() : ""
};
if (msgEl.TryGetProperty("images", out var imgs) && imgs.ValueKind == JsonValueKind.Array)
{
msg.ImagePaths = new List<string>();
foreach (var imgEl in imgs.EnumerateArray())
{
string b64 = imgEl.GetString();
if (!string.IsNullOrEmpty(b64))
{
byte[] imgData = Convert.FromBase64String(b64);
string path = Path.Combine(uploadDir, $"{Guid.NewGuid():N}.png");
File.WriteAllBytes(path, imgData);
msg.ImagePaths.Add(path);
}
}
}
messages.Add(msg);
}
return messages;
}
static List<ChatMessage> ParseOpenAIMessages(JsonElement messagesEl, string uploadDir)
{
var messages = new List<ChatMessage>();
foreach (var msgEl in messagesEl.EnumerateArray())
{
var msg = new ChatMessage
{
Role = msgEl.TryGetProperty("role", out var r) ? r.GetString() : "user"
};
if (msgEl.TryGetProperty("content", out var contentEl))
{
if (contentEl.ValueKind == JsonValueKind.String)
{
msg.Content = contentEl.GetString();
}
else if (contentEl.ValueKind == JsonValueKind.Array)
{
var textParts = new List<string>();
msg.ImagePaths = new List<string>();
foreach (var part in contentEl.EnumerateArray())
{
string type = part.TryGetProperty("type", out var t) ? t.GetString() : "";
if (type == "text" && part.TryGetProperty("text", out var txt))
{
textParts.Add(txt.GetString());
}
else if (type == "image_url" && part.TryGetProperty("image_url", out var imgUrl))
{
string url = imgUrl.TryGetProperty("url", out var u) ? u.GetString() : "";
if (url.StartsWith("data:"))
{
int commaIdx = url.IndexOf(',');
if (commaIdx > 0)
{
string b64 = url.Substring(commaIdx + 1);
byte[] imgData = Convert.FromBase64String(b64);
string path = Path.Combine(uploadDir, $"{Guid.NewGuid():N}.png");
File.WriteAllBytes(path, imgData);
msg.ImagePaths.Add(path);
}
}
}
}
msg.Content = string.Join("\n", textParts);
if (msg.ImagePaths.Count == 0) msg.ImagePaths = null;
}
}
messages.Add(msg);
}
return messages;
}
static List<string> DecodeBase64Images(JsonElement body, string uploadDir)
{
if (!body.TryGetProperty("images", out var imgs) || imgs.ValueKind != JsonValueKind.Array)
return null;
var paths = new List<string>();
foreach (var imgEl in imgs.EnumerateArray())
{
string b64 = imgEl.GetString();
if (!string.IsNullOrEmpty(b64))
{
byte[] imgData = Convert.FromBase64String(b64);
string path = Path.Combine(uploadDir, $"{Guid.NewGuid():N}.png");
File.WriteAllBytes(path, imgData);
paths.Add(path);
}
}
return paths.Count > 0 ? paths : null;
}
static string ResolveModelPath(string modelName, string modelDir)
{
string direct = Path.Combine(modelDir, modelName);
if (File.Exists(direct)) return direct;
string withExt = Path.Combine(modelDir, modelName + ".gguf");
if (File.Exists(withExt)) return withExt;
var match = Directory.GetFiles(modelDir, "*.gguf")
.FirstOrDefault(f => Path.GetFileNameWithoutExtension(f)
.Equals(modelName, StringComparison.OrdinalIgnoreCase));
return match;
}
Console.WriteLine($"Model directory: {modelDir}");
Console.WriteLine("Starting InferenceWeb on http://localhost:5000");
Console.WriteLine("API endpoints:");
Console.WriteLine(" GET / - Health check");
Console.WriteLine(" GET /api/tags - List available models (Ollama)");
Console.WriteLine(" POST /api/show - Show model details (Ollama)");
Console.WriteLine(" POST /api/generate - Generate text (Ollama)");
Console.WriteLine(" POST /api/chat/ollama - Chat completion (Ollama)");
Console.WriteLine(" POST /v1/chat/completions - Chat completion (OpenAI)");
Console.WriteLine(" GET /v1/models - List models (OpenAI)");
Console.WriteLine(" POST /api/chat - Chat (Web UI SSE)");
Console.WriteLine(" POST /api/models/load - Load model (Web UI)");
Console.WriteLine(" GET /api/models - List models (Web UI)");
app.Run("http://0.0.0.0:5000");