package agent_test

import (
	"context"
	"fmt"
	"os"

	llm "gitea.stevedudenhoeffer.com/steve/go-llm/v2"
	"gitea.stevedudenhoeffer.com/steve/go-llm/v2/agent"
	"gitea.stevedudenhoeffer.com/steve/go-llm/v2/tools"
)

// A researcher agent that can search the web and browse pages.
func Example_researcher() {
	model := llm.OpenAI(os.Getenv("OPENAI_API_KEY")).Model("gpt-4o")

	researcher := agent.New(model,
		"You are a research assistant. Use web search to find information, "+
			"then use the browser to read full articles when needed. "+
			"Provide a concise summary of your findings.",
		agent.WithTools(llm.NewToolBox(
			tools.WebSearch(os.Getenv("BRAVE_API_KEY")),
			tools.Browser(),
		)),
		agent.WithRequestOptions(llm.WithTemperature(0.3)),
	)

	result, err := researcher.Run(context.Background(), "What are the latest developments in Go generics?")
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	fmt.Println(result)
}

// A coder agent that can read, write, and execute code.
func Example_coder() {
	model := llm.OpenAI(os.Getenv("OPENAI_API_KEY")).Model("gpt-4o")

	coder := agent.New(model,
		"You are a coding assistant. You can read files, write files, and execute commands. "+
			"When asked to create a program, write the code to a file and then run it to verify it works.",
		agent.WithTools(llm.NewToolBox(
			tools.ReadFile(),
			tools.WriteFile(),
			tools.Exec(
				tools.WithAllowedCommands([]string{"go", "python", "node", "cat", "ls"}),
				tools.WithWorkDir(os.TempDir()),
			),
		)),
	)

	result, err := coder.Run(context.Background(),
		"Create a Go program that prints the first 10 Fibonacci numbers. Save it and run it.")
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	fmt.Println(result)
}

// An orchestrator agent that delegates to specialized sub-agents.
// The orchestrator breaks a complex task into subtasks and dispatches them
// to the appropriate sub-agent via tool calls.
func Example_orchestrator() {
	model := llm.OpenAI(os.Getenv("OPENAI_API_KEY")).Model("gpt-4o")

	// Specialized sub-agents
	researcher := agent.New(model,
		"You are a research assistant. Search the web for information on the given topic "+
			"and return a concise summary.",
		agent.WithTools(llm.NewToolBox(
			tools.WebSearch(os.Getenv("BRAVE_API_KEY")),
		)),
	)

	coder := agent.New(model,
		"You are a coding assistant. Write and test code as requested. "+
			"Save files and run them to verify they work.",
		agent.WithTools(llm.NewToolBox(
			tools.ReadFile(),
			tools.WriteFile(),
			tools.Exec(tools.WithAllowedCommands([]string{"go", "python"})),
		)),
	)

	// Orchestrator can delegate to both sub-agents
	orchestrator := agent.New(model,
		"You are a project manager. Break complex tasks into research and coding subtasks. "+
			"Use delegate_research for information gathering and delegate_coding for implementation. "+
			"Synthesize the results into a final answer.",
		agent.WithTools(llm.NewToolBox(
			researcher.AsTool("delegate_research",
				"Delegate a research task. Provide a clear question or topic to research."),
			coder.AsTool("delegate_coding",
				"Delegate a coding task. Provide clear requirements for what to implement."),
		)),
	)

	result, err := orchestrator.Run(context.Background(),
		"Research how to implement a binary search tree in Go, then create one with insert and search operations.")
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	fmt.Println(result)
}