// internal/skills/debug/handlers_test.go
package debug_test

import (
	"context"
	"encoding/json"
	"testing"

	iexec "github.com/mathiasbq/supervisor/internal/exec"
	"github.com/mathiasbq/supervisor/internal/skills/debug"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestDebugToolRegistered(t *testing.T) {
	sk := debug.New(debug.Config{SkillPrompt: "debug rules"})
	names := make([]string, 0)
	for _, tool := range sk.Tools() {
		names = append(names, tool.Name)
	}
	assert.Contains(t, names, "debug")
}

func TestDebugRequiresProjectRoot(t *testing.T) {
	sk := debug.New(debug.Config{SkillPrompt: "d"})
	_, err := sk.Handle(context.Background(), "debug", json.RawMessage(`{"error":"panic: nil pointer"}`))
	assert.ErrorContains(t, err, "project_root")
}

func TestDebugRequiresError(t *testing.T) {
	sk := debug.New(debug.Config{SkillPrompt: "d"})
	_, err := sk.Handle(context.Background(), "debug", json.RawMessage(`{"project_root":"/tmp"}`))
	assert.ErrorContains(t, err, "error")
}

func TestDebugCallsExecutor(t *testing.T) {
	called := false
	var capturedTask string
	fakeFn := func(_ context.Context, req iexec.Request) (iexec.Result, error) {
		called = true
		capturedTask = req.TaskPrompt
		return iexec.Result{
			Status: "pass", Phase: "debug", Skill: "debug",
			RunnerOutput: "HYPOTHESIS 1 (likelihood: high): nil map access\nVERIFY: go test ./... → expected: panic line reference",
			Verified:     false, ModelUsed: "self", Message: "3 hypotheses for: panic nil pointer at foo.go:42",
		}, nil
	}

	sk := debug.New(debug.Config{SkillPrompt: "debug rules", ExecutorFn: fakeFn, SessionsDir: t.TempDir()})
	out, err := sk.Handle(context.Background(), "debug", json.RawMessage(
		`{"project_root":"/tmp/proj","error":"panic: nil pointer dereference at foo.go:42","context":"occurs on startup"}`,
	))
	require.NoError(t, err)
	assert.True(t, called)
	assert.Contains(t, capturedTask, "panic: nil pointer dereference")
	assert.Contains(t, capturedTask, "occurs on startup")

	var result iexec.Result
	require.NoError(t, json.Unmarshal(out, &result))
	assert.Equal(t, "debug", result.Phase)
}