00e7df2802
Add ChatController that proxies POST /api/chat to the local Responses API (localhost:8317/v1/responses) with SSE streaming. Client reads tokens via SetBrowserResponseStreamingEnabled and renders them incrementally. Includes thinking indicator, input disabled during streaming, and error handling. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
30 lines
1.4 KiB
Markdown
30 lines
1.4 KiB
Markdown
## 1. Shared Models
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- [x] 1.1 Create ChatRequest.cs in ChatAgent.Shared/Models with a Messages list property
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## 2. API Backend
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- [x] 2.1 Add appsettings.json to ChatAgent.Api with ResponsesApi:BaseUrl and ResponsesApi:Model
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- [x] 2.2 Register an HttpClient for the Responses API proxy in Api Program.cs
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- [x] 2.3 Create ChatController with POST /api/chat that proxies to the Responses API with streaming
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- [x] 2.4 Parse Responses API SSE stream, extract response.output_text.delta events, re-emit as simplified SSE to client
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## 3. Client Streaming
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- [x] 3.1 Add a streaming SendChatAsync method to ChatApiClient that uses SetBrowserResponseStreamingEnabled and HttpCompletionOption.ResponseHeadersRead
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- [x] 3.2 Parse the simplified SSE stream line-by-line, yielding text deltas
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## 4. Chat Page Updates
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- [x] 4.1 Replace hardcoded response in Chat.razor with a call to ChatApiClient.SendChatAsync
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- [x] 4.2 Append tokens to the assistant message incrementally with StateHasChanged after each delta
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- [x] 4.3 Add a thinking indicator shown until the first token arrives
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- [x] 4.4 Disable input field and send button while streaming is in progress
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- [x] 4.5 Handle errors — display error message if API call fails
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- [x] 4.6 Auto-scroll during streaming (not just at the end)
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## 5. Verify
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- [x] 5.1 Run dotnet build to confirm no errors
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- [ ] 5.2 Manually verify: send a message, see streaming response from Claude
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