package spells

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

	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
	"gitea.maximumdirect.net/eric/promptkit"
)

func TestPromptAssetsPrepareSpellPrompt(t *testing.T) {
	transcript := []byte(`{"id":"session-1","segments":[{"id":"u1","text":"spell-transcript"}]}`)
	prepared := prepareSpellsPrompt(t, transcript, "spell-player", "Mira: wizard", "Shield: abjuration")

	if prepared.PromptID != PromptID {
		t.Fatalf("prompt id = %q, want %q", prepared.PromptID, PromptID)
	}
	if prepared.OutputContract.SchemaPath != "dnd_spells_llm.v1.json" {
		t.Fatalf("schema path = %q, want LLM-only schema", prepared.OutputContract.SchemaPath)
	}
}

func TestPromptAssetsPrepareWithMissingOptionalReferences(t *testing.T) {
	transcript := []byte(`{"id":"session-1","segments":[]}`)
	prepared := prepareSpellsPrompt(t, transcript, " ", " ", " ")

	for _, message := range prepared.Messages {
		if strings.Contains(message.Content, "Player list reference:") && strings.Contains(message.Content, "Party roster reference:") && strings.Contains(message.Content, "Glossary reference:") {
			return
		}
	}
	t.Fatalf("reference message did not render empty optional reference placeholders")
}

func TestPromptAssetDiagnosticsOmitRawMaterials(t *testing.T) {
	transcript := []byte(`{"secret":"source text"}`)
	reference := "private party note"
	prepared := prepareSpellsPrompt(t, transcript, "private player note", reference, " ")
	metadata := newExtractor(t, &fakeSpellsLLMClient{}, overlaySpellCatalogReference()).ManifestMetadata()

	payload, err := json.Marshal(map[string]any{
		"prepared": map[string]any{
			"prompt_id":              prepared.PromptID,
			"prompt_version":         prepared.PromptVersion,
			"prompt_hash":            prepared.PromptHash,
			"rendered_prompt_hash":   prepared.RenderedPromptHash,
			"selected_profile_id":    prepared.SelectedProfileID,
			"output_contract":        prepared.OutputContract,
			"input_hashes":           prepared.InputHashes,
			"effective_model_params": prepared.EffectiveModelParams,
		},
		"manifest": metadata,
	})
	if err != nil {
		t.Fatalf("marshal diagnostics: %v", err)
	}
	diagnostics := string(payload)
	for _, forbidden := range []string{
		"source text",
		"private player note",
		reference,
		"Cure Wounds",
		"Aegis of Emberfall",
		"Emberfall Aegis",
		"Private campaign source",
		"file:///private-source.json",
		`"properties"`,
		"spell_casts",
	} {
		if strings.Contains(diagnostics, forbidden) {
			t.Fatalf("diagnostics leaked %q: %s", forbidden, diagnostics)
		}
	}
	if metadata["prompt_id"] != PromptID || metadata["prompt_version"] != SchemaVersion {
		t.Fatalf("manifest prompt metadata = %#v", metadata)
	}
	if !strings.HasPrefix(metadata["prompt_sha256"].(string), "sha256:") {
		t.Fatalf("manifest prompt hash = %#v, want sha256-prefixed", metadata["prompt_sha256"])
	}
}

func prepareSpellsPrompt(t *testing.T, transcript []byte, players string, party string, glossary string) *promptkit.PreparedRun {
	t.Helper()
	registry := llm.NewAssetRegistry()
	if err := RegisterPromptAssets(registry); err != nil {
		t.Fatalf("register spell prompt assets: %v", err)
	}
	options, err := registry.PromptKitOptions()
	if err != nil {
		t.Fatalf("PromptKitOptions() error = %v, want nil", err)
	}
	options = append(options, promptkit.WithProfiles(promptkit.OpenAICompatibleProfile(promptkit.OpenAICompatibleProfileConfig{
		ID:       "spell-test-profile",
		Endpoint: "http://127.0.0.1:1/v1",
		Model:    "spell-test-model",
	})))
	engine, err := promptkit.NewEngine(promptkit.Config{Timeout: time.Second}, options...)
	if err != nil {
		t.Fatalf("NewEngine() error = %v, want nil", err)
	}
	prepared, err := engine.Prepare(context.Background(), promptkit.RunRequest{
		PromptID:      PromptID,
		PromptVersion: SchemaVersion,
		ProfileID:     "spell-test-profile",
		Inputs: map[string]promptkit.ArtifactRef{
			"transcript":    promptkit.InlineWithURI("file:///session.json", string(transcript)),
			"spell_catalog": promptkit.Inline(`{"spells":[{"canonical_name":"spell-catalog-sentinel","aliases":["spell-alias-sentinel"]}]}`),
			"npc_registry":  promptkit.Inline(`{"npcs":[{"name":"spell-npc-sentinel"}]}`),
			"players":       promptkit.Inline(players),
			"party":         promptkit.Inline(party),
			"glossary":      promptkit.Inline(glossary),
		},
	})
	if err != nil {
		t.Fatalf("Prepare() error = %v, want nil", err)
	}
	return prepared
}
