package cabana

import (
	"testing"

	"git.golem15.com/golem15/summercms/modules/bouncer"
)

func TestScopeMatch(t *testing.T) {
	cases := []struct {
		name     string
		pattern  string
		required string
		want     int
	}{
		{"exact full same", "a.b.c", "a.b.c", matchFull},
		{"exact full via a.b.*", "a.b.*", "a.b.c", matchFull},
		{"exact full via a.*", "a.*", "a.b.c", matchFull},
		{"exact none a.x.*", "a.x.*", "a.b.c", matchNone},
		{"exact none a.b.d", "a.b.d", "a.b.c", matchNone},
		{"wild full same", "a.b.*", "a.b.*", matchFull},
		{"wild full broader a.*", "a.*", "a.b.*", matchFull},
		{"wild partial narrower pattern", "a.b.*", "a.*", matchPartial},
		{"wild partial exact narrower", "a.b.c", "a.*", matchPartial},
		{"wild none a.x.*", "a.x.*", "a.b.*", matchNone},
		{"wild none x.*", "x.*", "a.b.*", matchNone},
		{"leading partial exact", "*.manage", "a.manage", matchPartial},
		{"leading none wild required", "*.manage", "a.manage.*", matchNone},
		{"leading none wild pattern required", "*.manage", "*.manage", matchNone},
		{"empty pattern", "", "a.b.c", matchNone},
		{"empty required", "a.b.c", "", matchNone},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			if got := scopeMatch(tc.pattern, tc.required); got != tc.want {
				t.Fatalf("scopeMatch(%q, %q) = %d, want %d", tc.pattern, tc.required, got, tc.want)
			}
		})
	}
}

func TestAllowsScope(t *testing.T) {
	dev := &bouncer.Principal{
		ID:      1,
		Backend: true,
		PermissionGrants: map[string]bool{
			"acme.demo.access":  true,
			"acme.demo.reports": true,
		},
	}
	super := &bouncer.Principal{ID: 2, Backend: true, IsSuperuser: true}

	cases := []struct {
		name     string
		p        *bouncer.Principal
		scope    *bouncer.ScopeLimit
		required []string
		want     bool
	}{
		{
			name: "JWT nil scope keeps empty-list shortcut",
			p:    dev, scope: nil, required: nil, want: true,
		},
		{
			name: "JWT nil scope permission grant",
			p:    dev, scope: nil, required: []string{"acme.demo.access"}, want: true,
		},
		{
			name: "JWT nil scope missing grant",
			p:    dev, scope: nil, required: []string{"acme.other.x"}, want: false,
		},
		{
			name: "JWT superuser empty list",
			p:    super, scope: nil, required: nil, want: true,
		},
		{
			name: "full * every method empty list",
			p:    dev, scope: &bouncer.ScopeLimit{Full: true}, required: nil, want: true,
		},
		{
			name: "full * permission as owner",
			p:    dev, scope: &bouncer.ScopeLimit{Full: true}, required: []string{"acme.demo.access"}, want: true,
		},
		{
			name: "full admin:read empty list",
			p:    dev, scope: &bouncer.ScopeLimit{Full: true}, required: nil, want: true,
		},
		{
			name: "plugin scope with owner grant",
			p:    dev,
			scope: &bouncer.ScopeLimit{Scopes: [][]string{{"acme.demo.*"}}},
			required: []string{"acme.demo.access"}, want: true,
		},
		{
			name: "plugin scope without owner grant",
			p: &bouncer.Principal{
				ID: 3, Backend: true,
				PermissionGrants: map[string]bool{"acme.other.x": true},
			},
			scope:    &bouncer.ScopeLimit{Scopes: [][]string{{"acme.demo.*"}}},
			required: []string{"acme.demo.access"}, want: false,
		},
		{
			name: "superuser with scoped token limited",
			p:    super,
			scope: &bouncer.ScopeLimit{Scopes: [][]string{{"acme.demo.reports"}}},
			required: []string{"acme.demo.access"}, want: false,
		},
		{
			name: "superuser scoped token matching scope code",
			p:    super,
			scope: &bouncer.ScopeLimit{Scopes: [][]string{{"acme.demo.reports"}}},
			required: []string{"acme.demo.reports"}, want: true,
		},
		{
			name: "empty requirement list refused unless full",
			p:    dev,
			scope: &bouncer.ScopeLimit{Scopes: [][]string{{"acme.demo.*"}}},
			required: nil, want: false,
		},
		{
			name: "multi-code literal: one scope must match every code",
			p:    dev,
			scope: &bouncer.ScopeLimit{Scopes: [][]string{{"acme.demo.*"}}},
			required: []string{"acme.demo.access", "acme.demo.reports"}, want: true,
		},
		{
			name: "multi-code literal: two scopes each matching part fails",
			p:    dev,
			scope: &bouncer.ScopeLimit{Scopes: [][]string{
				{"acme.demo.access"},
				{"acme.demo.reports"},
			}},
			required: []string{"acme.demo.access", "acme.demo.reports"}, want: false,
		},
		{
			name: "wildcard requirement broader pattern partial via ownerHas(pattern)",
			p: &bouncer.Principal{
				ID: 4, Backend: true,
				PermissionGrants: map[string]bool{"acme.demo.*": true},
			},
			scope:    &bouncer.ScopeLimit{Scopes: [][]string{{"acme.demo.access"}}},
			required: []string{"acme.demo.*"}, want: true,
		},
		{
			name: "wildcard requirement equal pattern full",
			p:    dev,
			scope: &bouncer.ScopeLimit{Scopes: [][]string{{"acme.demo.*"}}},
			required: []string{"acme.demo.*"}, want: true,
		},
		{
			name: "wildcard requirement narrower pattern none for Allows owner side",
			p: &bouncer.Principal{
				ID: 5, Backend: true,
				PermissionGrants: map[string]bool{"acme.demo.access": true},
			},
			scope:    &bouncer.ScopeLimit{Scopes: [][]string{{"acme.demo.access.extra"}}},
			required: []string{"acme.demo.*"}, want: false,
		},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			p := *tc.p
			p.Scope = tc.scope
			if got := Allows(&p, tc.required); got != tc.want {
				t.Fatalf("Allows = %v, want %v", got, tc.want)
			}
		})
	}
}