package usecase

import (
	"context"
	"errors"
	"math"
	"testing"

	"gitea.maximumdirect.net/eric/promptkit/internal/domain"
)

func TestRunnerPrepareExecutionRejectsInvalidExecutionSettings(t *testing.T) {
	runner := NewRunner(
		&fakePromptRepo{def: promptDef(domain.FormatText, domain.ValidationNone, 0)},
		&fakeExecutionProfileRepo{profiles: map[string]*domain.ExecutionProfile{"exec": defaultExecutionProfile()}},
		nil,
		defaultArtifactReader(),
		defaultRenderer(),
		&fakeLLM{forbid: true},
		nil,
		nil,
	)

	_, err := runner.PrepareExecution(context.Background(), domain.RunRequest{
		PromptID:  "p",
		ProfileID: "exec",
		Inputs:    singleInputRef(),
		Execution: &domain.ExecutionTargetOverride{TopP: float64Ptr(math.Inf(-1))},
	})
	if !errors.Is(err, ErrInvalidRequest) {
		t.Fatalf("expected ErrInvalidRequest, got %v", err)
	}
}

func TestRunnerPrepareExecutionValidatesAndNormalizesRequestEndpoints(t *testing.T) {
	newRunner := func() *Runner {
		return NewRunner(
			&fakePromptRepo{def: promptDef(domain.FormatText, domain.ValidationNone, 0)},
			&fakeExecutionProfileRepo{profiles: map[string]*domain.ExecutionProfile{"exec": defaultExecutionProfile()}},
			nil,
			defaultArtifactReader(),
			defaultRenderer(),
			&fakeLLM{forbid: true},
			nil,
			nil,
		)
	}

	invalidEndpoints := []string{
		"/v1",
		"https:///v1",
		"ftp://provider.example/v1",
		"https://user@provider.example/v1",
		"https://provider.example/v1?mode=chat",
		"https://provider.example/v1#chat",
	}
	for _, endpoint := range invalidEndpoints {
		t.Run(endpoint, func(t *testing.T) {
			_, err := newRunner().PrepareExecution(context.Background(), domain.RunRequest{
				PromptID:  "p",
				ProfileID: "exec",
				Inputs:    singleInputRef(),
				Execution: &domain.ExecutionTargetOverride{Endpoint: endpoint},
			})
			if !errors.Is(err, ErrInvalidRequest) {
				t.Fatalf("expected ErrInvalidRequest, got %v", err)
			}
		})
	}

	prepared, err := newRunner().PrepareExecution(context.Background(), domain.RunRequest{
		PromptID:  "p",
		ProfileID: "exec",
		Inputs:    singleInputRef(),
		Execution: &domain.ExecutionTargetOverride{Endpoint: "  https://provider.example/nested/v1  "},
	})
	if err != nil {
		t.Fatalf("prepare normalized endpoint: %v", err)
	}
	if got := prepared.Details().EffectiveModelParams.Endpoint; got != "https://provider.example/nested/v1" {
		t.Fatalf("effective endpoint = %q", got)
	}
}