// Package main demonstrates usage of the agentmon SDK.
package main

import (
	"context"
	"fmt"
	"log"
	"time"

	"agentmon/internal/sdk"
)

func main() {
	emitter, err := sdk.NewEmitter(sdk.Config{
		ServerURL:     "http://localhost:8080",
		Framework:     "example-agent",
		ClientID:      "example-client-001",
		Host:          "localhost",
		BufferSize:    50,
		EnableLogging: true,
	})
	if err != nil {
		log.Fatalf("Failed to create emitter: %v", err)
	}
	defer emitter.Close(context.Background())

	ctx := context.Background()

	sessionID := generateSessionID()
	log.Printf("Starting session: %s", sessionID)

	sessionStart := sdk.NewSessionStart(sessionID, sdk.WithSource(emitter))
	if err := emitter.Emit(ctx, sessionStart); err != nil {
		log.Printf("Failed to emit session.start: %v", err)
	}

	runID := generateRunID()
	log.Printf("Starting run: %s", runID)

	runStart := sdk.NewRunStart(sessionID, runID,
		sdk.WithSource(emitter),
		sdk.WithAttributes(map[string]any{
			"command": "example-command",
			"cwd":     "/home/user/project",
		}),
	)
	if err := emitter.Emit(ctx, runStart); err != nil {
		log.Printf("Failed to emit run.start: %v", err)
	}

	traceID := generateTraceID()

	span1ID := generateSpanID()
	span1Start := sdk.NewSpanStart(sessionID, runID, traceID, span1ID,
		sdk.WithSource(emitter),
		sdk.WithSpanKind("tool"),
		sdk.WithName("ExampleTool"),
		sdk.WithAttributes(map[string]any{
			"tool": "example-tool",
		}),
	)
	if err := emitter.Emit(ctx, span1Start); err != nil {
		log.Printf("Failed to emit span.start: %v", err)
	}

	time.Sleep(100 * time.Millisecond)

	span1End := sdk.NewSpanEnd(sessionID, runID, traceID, span1ID, "success", 100,
		sdk.WithSource(emitter),
		sdk.WithSpanKind("tool"),
		sdk.WithName("ExampleTool"),
	)
	if err := emitter.Emit(ctx, span1End); err != nil {
		log.Printf("Failed to emit span.end: %v", err)
	}

	span2ID := generateSpanID()
	span2Start := sdk.NewSpanStart(sessionID, runID, traceID, span2ID,
		sdk.WithSource(emitter),
		sdk.WithSpanKind("llm"),
		sdk.WithName("ClaudeRequest"),
		sdk.WithAttributes(map[string]any{
			"model": "claude-3-opus",
		}),
	)
	if err := emitter.Emit(ctx, span2Start); err != nil {
		log.Printf("Failed to emit span.start: %v", err)
	}

	time.Sleep(200 * time.Millisecond)

	span2End := sdk.NewSpanEnd(sessionID, runID, traceID, span2ID, "success", 200,
		sdk.WithSource(emitter),
		sdk.WithSpanKind("llm"),
		sdk.WithName("ClaudeRequest"),
		sdk.WithLLMUsage("claude-3-opus", 1000, 500, 0.015),
	)
	if err := emitter.Emit(ctx, span2End); err != nil {
		log.Printf("Failed to emit span.end: %v", err)
	}

	metrics := sdk.NewMetricSnapshot(sessionID, runID, map[string]any{
		"tokens_in":   1000.0,
		"tokens_out":  500.0,
		"cost_usd":    0.015,
		"latency_ms":  300.0,
		"error_count": 0,
	})
	if err := emitter.Emit(ctx, metrics); err != nil {
		log.Printf("Failed to emit metric.snapshot: %v", err)
	}

	runEnd := sdk.NewRunEnd(sessionID, runID, "success", 300,
		sdk.WithSource(emitter),
		sdk.WithLLMUsage("claude-3-opus", 1000, 500, 0.015),
	)
	if err := emitter.Emit(ctx, runEnd); err != nil {
		log.Printf("Failed to emit run.end: %v", err)
	}

	sessionEnd := sdk.NewSessionEnd(sessionID, sdk.WithSource(emitter))
	if err := emitter.Emit(ctx, sessionEnd); err != nil {
		log.Printf("Failed to emit session.end: %v", err)
	}

	if err := emitter.Flush(ctx); err != nil {
		log.Printf("Failed to flush events: %v", err)
	}

	log.Println("Example completed successfully!")
}

func generateSessionID() string {
	return fmt.Sprintf("sess-%d", time.Now().UnixNano())
}

func generateRunID() string {
	return fmt.Sprintf("run-%d", time.Now().UnixNano())
}

func generateTraceID() string {
	return fmt.Sprintf("trace-%d", time.Now().UnixNano())
}

func generateSpanID() string {
	return fmt.Sprintf("span-%d", time.Now().UnixNano())
}