From a61f40a4221c1586d801308da9ae1869fb6bdbb6 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sun, 17 Aug 2025 08:54:20 +0300
Subject: cli: add hexai command-line tool and split LSP to hexai-lsp

- New cmd/hexai CLI: reads stdin/arg, prints LLM output to stdout
- Prints provider/model immediately to stderr; summary at end
- Refactor config loader to internal/appconfig
- Update Taskfile to build/install/run both binaries
- Update README with new CLI and LSP names
---
 cmd/hexai-lsp/main.go | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 cmd/hexai-lsp/main.go

(limited to 'cmd/hexai-lsp/main.go')

diff --git a/cmd/hexai-lsp/main.go b/cmd/hexai-lsp/main.go
new file mode 100644
index 0000000..065b6e2
--- /dev/null
+++ b/cmd/hexai-lsp/main.go
@@ -0,0 +1,82 @@
+package main
+
+import (
+    "flag"
+    "log"
+    "os"
+    "strings"
+
+    "hexai/internal"
+    "hexai/internal/appconfig"
+    "hexai/internal/llm"
+    "hexai/internal/logging"
+    "hexai/internal/lsp"
+)
+
+func main() {
+    logPath := flag.String("log", "/tmp/hexai-lsp.log", "path to log file (optional)")
+    showVersion := flag.Bool("version", false, "print version and exit")
+    flag.Parse()
+    if *showVersion {
+        log.Println(internal.Version)
+        return
+    }
+
+    // Configure logging (path flag only)
+    logger := log.New(os.Stderr, "hexai-lsp ", log.LstdFlags|log.Lmsgprefix)
+    if *logPath != "" {
+        f, err := os.OpenFile(*logPath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
+        if err != nil {
+            logger.Fatalf("failed to open log file: %v", err)
+        }
+        defer f.Close()
+        logger.SetOutput(f)
+    }
+    logging.Bind(logger)
+
+    // Load config file
+    cfg := appconfig.Load(logger)
+
+    // Normalize and apply logging config
+    cfg.ContextMode = strings.ToLower(strings.TrimSpace(cfg.ContextMode))
+    if cfg.LogPreviewLimit >= 0 {
+        logging.SetLogPreviewLimit(cfg.LogPreviewLimit)
+    }
+
+    // Build LLM client from config
+    var client llm.Client
+    {
+        llmCfg := llm.Config{
+            Provider:       cfg.Provider,
+            OpenAIBaseURL:  cfg.OpenAIBaseURL,
+            OpenAIModel:    cfg.OpenAIModel,
+            OllamaBaseURL:  cfg.OllamaBaseURL,
+            OllamaModel:    cfg.OllamaModel,
+            CopilotBaseURL: cfg.CopilotBaseURL,
+            CopilotModel:   cfg.CopilotModel,
+        }
+        oaKey := os.Getenv("OPENAI_API_KEY")
+        cpKey := os.Getenv("COPILOT_API_KEY")
+        if c, err := llm.NewFromConfig(llmCfg, oaKey, cpKey); err != nil {
+            logging.Logf("lsp ", "llm disabled: %v", err)
+        } else {
+            client = c
+            logging.Logf("lsp ", "llm enabled provider=%s model=%s", c.Name(), c.DefaultModel())
+        }
+    }
+
+    server := lsp.NewServer(os.Stdin, os.Stdout, logger, lsp.ServerOptions{
+        LogContext:        *logPath != "",
+        MaxTokens:         cfg.MaxTokens,
+        ContextMode:       cfg.ContextMode,
+        WindowLines:       cfg.ContextWindowLines,
+        MaxContextTokens:  cfg.MaxContextTokens,
+        NoDiskIO:          cfg.NoDiskIO,
+        Client:            client,
+        TriggerCharacters: cfg.TriggerCharacters,
+    })
+    if err := server.Run(); err != nil {
+        logger.Fatalf("server error: %v", err)
+    }
+}
+
-- 
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