// Package claim_test covers the claim-property envelope (brain#21).
package claim_test

import (
	"testing"

	"github.com/mathiasbq/hyperguild/ingestion/internal/claim"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestValidateEnvelope(t *testing.T) {
	tests := []struct {
		name    string
		fm      map[string]string
		wantErr string
	}{
		{
			name: "absent is fine — the fields are opt-in on new writes",
			fm:   map[string]string{"wing": "homelab", "hall": "facts"},
		},
		{
			name: "complete envelope with provenance",
			fm: map[string]string{
				"half_life": "durable", "applies": "universal", "claim_provenance": "asserted",
			},
		},
		{
			name: "inferred provenance is equally valid — it just must be stated",
			fm: map[string]string{
				"half_life": "volatile", "applies": "local", "claim_provenance": "inferred",
			},
		},
		{
			// A value nobody can act on is worse than no value: a lint
			// silently skips it, so the note looks classified and isn't.
			name:    "unknown half_life value",
			fm:      map[string]string{"half_life": "forever", "claim_provenance": "asserted"},
			wantErr: `half_life: "forever" is not one of volatile, seasonal, durable`,
		},
		{
			name:    "unknown applies value",
			fm:      map[string]string{"applies": "galaxy", "claim_provenance": "asserted"},
			wantErr: `applies: "galaxy" is not one of local, homelab, universal`,
		},
		{
			// brain#21: a value a model inferred must never be
			// indistinguishable from one Mathias asserted. Writing the field
			// without saying who set it is exactly that laundering.
			name:    "envelope field without provenance",
			fm:      map[string]string{"half_life": "durable"},
			wantErr: "claim_provenance is required when half_life or applies is set",
		},
		{
			name:    "applies without provenance",
			fm:      map[string]string{"applies": "homelab"},
			wantErr: "claim_provenance is required when half_life or applies is set",
		},
		{
			name:    "unknown provenance value",
			fm:      map[string]string{"half_life": "durable", "claim_provenance": "probably"},
			wantErr: `claim_provenance: "probably" is not one of asserted, inferred`,
		},
		{
			// Provenance alone says who set fields that aren't there.
			name:    "provenance without any envelope field",
			fm:      map[string]string{"claim_provenance": "asserted"},
			wantErr: "claim_provenance is set but neither half_life nor applies is",
		},
		{
			// The glossary wing has used scope: homelab-core since #5. The
			// envelope deliberately does NOT claim that key (brain#21).
			name: "glossary scope is untouched",
			fm:   map[string]string{"scope": "homelab-core", "term": "koala"},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			err := claim.ValidateEnvelope(tt.fm)
			if tt.wantErr == "" {
				assert.NoError(t, err)
				return
			}
			require.Error(t, err)
			assert.Contains(t, err.Error(), tt.wantErr)
		})
	}
}