package catalog

import (
	"strings"
	"testing"

	"github.com/descrybe/descrybe-v2/apps/api/internal/aiprompts"
	"github.com/descrybe/descrybe-v2/apps/api/internal/company"
)

func TestCategoryEnhancePromptMapRepairStates(t *testing.T) {
	t.Parallel()
	// Clean split overlay (pure legacy text) is OK under sl and *.
	split := aiprompts.SplitLegacyCombinedEnhancePrompt(`GPT predloga:
<name>{Napiši tip izdelka}</name>
<metaDescription>{140 znakov}</metaDescription>
<H2>{benefit}</H2>`)
	if split == "" {
		t.Fatal("expected split overlay")
	}
	if !categoryEnhancePromptMapOK(company.LangPromptMap{"sl": split, company.LangPromptAny: split}) {
		t.Fatal("split overlay map should be OK")
	}
	if !categoryEnhancePromptMapOK(company.LangPromptMap{"sl": split}) {
		t.Fatal("sl-only split map should be OK (idempotent)")
	}
	if !categoryEnhancePromptMapOK(company.LangPromptMap{company.LangPromptAny: split}) {
		t.Fatal("*-only split map should be OK (idempotent)")
	}
	legacy := company.LangPromptMap{"sl": "<H2>legacy HTML marketing</H2>"}
	if categoryEnhancePromptMapOK(legacy) {
		t.Fatal("legacy HTML must need repair")
	}
	// Stored template boilerplate (old seed versions) must need repair → cleared.
	tpl := strings.TrimSpace(aiprompts.CategoryEnhanceUserTemplate)
	if categoryEnhancePromptMapOK(company.LangPromptMap{"sl": tpl, company.LangPromptAny: tpl}) {
		t.Fatal("stored template boilerplate must need repair")
	}
}

func TestRepairTargetsUseSharedTemplate(t *testing.T) {
	t.Parallel()
	tpl := strings.TrimSpace(aiprompts.CategoryEnhanceUserTemplate)
	for _, v := range []string{"name", "description", "attrs", "category", "language"} {
		if !strings.Contains(tpl, "{{"+v+"}}") {
			t.Fatalf("shared template missing {{%s}}", v)
		}
	}
	if !strings.Contains(strings.ToLower(tpl), "never brand-only") {
		t.Fatal("Title section must forbid brand-only names")
	}
	if a1CompanyID == "" || platformDemoCompanyName == "" {
		t.Fatal("missing company target constants")
	}
}

func TestComputeRepairedEnhancePromptClears(t *testing.T) {
	t.Parallel()
	// No seed + no legacy content → clear (fallback), never template boilerplate.
	prompt, fromSeed, fromLegacy, fallback := computeRepairedEnhancePrompt(
		company.LangPromptMap{"sl": strings.TrimSpace(aiprompts.CategoryEnhanceUserTemplate)}, "", false)
	if prompt != "" || fromSeed || fromLegacy || !fallback {
		t.Fatalf("want clear fallback, got prompt=%q seed=%v legacy=%v fallback=%v", prompt, fromSeed, fromLegacy, fallback)
	}
	// Seed legacy → split overlay with the exact Slovenian text.
	seed := `GPT predloga:
<name>{Napiši tip izdelka}</name>
<metaDescription>{140 znakov}</metaDescription>
<H2>{benefit}</H2>`
	prompt, fromSeed, fromLegacy, fallback = computeRepairedEnhancePrompt(nil, seed, true)
	if prompt == "" || !fromSeed || !fromLegacy || fallback {
		t.Fatalf("want seed split, got prompt=%q seed=%v legacy=%v fallback=%v", prompt, fromSeed, fromLegacy, fallback)
	}
	if !strings.Contains(prompt, "140 znakov") || strings.Contains(strings.ToLower(prompt), "build json") {
		t.Fatalf("split must keep legacy text without boilerplate: %q", prompt)
	}
}

func TestLegacyTitleRulesFromSeedShape(t *testing.T) {
	t.Parallel()
	seed := `Ustvari nov opis

GPT predloga:
<name>{Napiši novo ime izdelka po formuli: "tip izdelka sentence case", "znamka s pravilno kapitalizacijo", "poln model izdelka". Ne uporabljaj vejic.}</name>
<metaDescription>{140 znakov}</metaDescription>
<H2>{benefit}</H2>`
	rules := legacyTitleRules(nil, seed)
	if !strings.Contains(strings.ToLower(rules), "znamka") {
		t.Fatalf("expected title rules from seed, got %q", rules)
	}
	raw := aiprompts.DeriveTitleTemplateJSON(rules)
	if aiprompts.TitleTemplateNeedsRepair(raw) {
		t.Fatalf("derived title_template still needs repair: %s", raw)
	}
}