package cabana

import (
	"errors"
	"fmt"
	"strings"
	"testing"
	"testing/fstest"

	"git.golem15.com/golem15/summercms/modules/pact"
	"git.golem15.com/golem15/summercms/modules/seaglass"
)

// TestRichEditorCompile pins D-10's Docker-free rules: the keys a richeditor
// takes, the notices a removal report becomes, the value check before a
// save, the projected sanitize step, and the boot refusal of the
// controller-only features on settings forms.
func TestRichEditorCompile(t *testing.T) {
	t.Run("keys", func(t *testing.T) {
		cc := ucMustCompile(t, ucFields+"    description:\n        type: richeditor\n        label: Description\n        size: large\n        span: left\n        comment: HTML\n        required: true\n        tab: Content\n        default: \"<p>x</p>\"\n", nil)
		if d := ucField(t, cc, "description"); d.Type != richEditorType || d.Size != "large" || d.Tab != "Content" {
			t.Fatalf("description = %+v", d)
		}
		for _, key := range []string{"options: typeOptions", "attributes: {}", "placeholder: x", "toolbarButtons: bold", "prompt: x", "maxItems: 2"} {
			_, err := ucCompile(ucFields+"    description:\n        type: richeditor\n        "+key+"\n", nil)
			if err == nil {
				t.Fatalf("richeditor accepted %s", key)
			}
		}
		_, err := ucCompile(ucFields+"    description:\n        type: richeditor\n        options: typeOptions\n", nil)
		wantErr(t, err, "options is not valid on type: richeditor")
	})

	t.Run("notices", func(t *testing.T) {
		for _, tc := range []struct {
			name string
			in   seaglass.Removals
			want string
		}{
			{"nothing removed", seaglass.Removals{}, "[]"},
			{"elements", seaglass.Removals{Elements: []string{"script", "iframe"}, ElementCount: 3, Changed: true},
				"[" + msgRichRemovedElements + " names=script, iframe count=3]"},
			{"attributes", seaglass.Removals{Attributes: []string{"onclick"}, AttributeCount: 1, Changed: true},
				"[" + msgRichRemovedAttributes + " names=onclick count=1]"},
			{"comments", seaglass.Removals{Comments: 2, Changed: true}, "[" + msgRichRemovedComments + " names= count=2]"},
			{"all three in order", seaglass.Removals{Elements: []string{"style"}, ElementCount: 1, Attributes: []string{"style", "rel"}, AttributeCount: 2, Comments: 1, Changed: true},
				"[" + msgRichRemovedElements + " names=style count=1 " + msgRichRemovedAttributes + " names=style, rel count=2 " + msgRichRemovedComments + " names= count=1]"},
			{"markup changed only", seaglass.Removals{Changed: true}, "[" + msgRichMarkupChanged + " names= count=0]"},
		} {
			var parts []string
			for _, n := range richEditorNotices(tc.in) {
				parts = append(parts, fmt.Sprintf("%s names=%s count=%d", n.Message, n.Params["names"], n.Count))
			}
			if got := "[" + strings.Join(parts, " ") + "]"; got != tc.want {
				t.Fatalf("%s: notices = %s\nwant %s", tc.name, got, tc.want)
			}
		}
	})

	cc := ucMustCompile(t, ucFields+"    description:\n        type: richeditor\n"+ucRepeater(""), nil)

	t.Run("a value that is not a string or null is a 422 on the field", func(t *testing.T) {
		for _, raw := range []string{`{"description":"<p>x</p>"}`, `{"description":null}`, `{"title":"no description"}`} {
			if err := checkRichEditorValues(cc, utJSON(t, raw).(map[string]any), "update"); err != nil {
				t.Fatalf("%s: %v", raw, err)
			}
		}
		for _, raw := range []string{`{"description":1}`, `{"description":true}`, `{"description":["<p>x</p>"]}`, `{"description":{"pl":"<p>x</p>"}}`} {
			err := checkRichEditorValues(cc, utJSON(t, raw).(map[string]any), "create")
			var invalid *ValidationError
			if !errors.As(err, &invalid) || invalid.Details["description"] == nil || len(invalid.Details) != 1 {
				t.Fatalf("%s: err = %v", raw, err)
			}
		}
	})

	t.Run("projected values are sanitized, clean ones byte for byte", func(t *testing.T) {
		clean := "<p>It's <strong>fine</strong> &amp; \"quoted\"</p>"
		projected := map[string]any{"description": clean}
		if notices := sanitizeRichEditors(cc, projected); len(notices) != 0 || projected["description"] != clean {
			t.Fatalf("clean: %v %v", projected, notices)
		}
		projected = map[string]any{"description": `<p onclick="x()">a</p><!-- c -->`}
		notices := sanitizeRichEditors(cc, projected)
		if projected["description"] != "<p>a</p>" || len(notices) != 2 || notices[0].field != "description" ||
			notices[0].notice.Message != msgRichRemovedAttributes || notices[1].notice.Message != msgRichRemovedComments {
			t.Fatalf("dirty: %v %+v", projected, notices)
		}
		projected = map[string]any{"description": nil, "title": `<script>x</script>`}
		if notices := sanitizeRichEditors(cc, projected); len(notices) != 0 || projected["description"] != nil || projected["title"] != `<script>x</script>` {
			t.Fatalf("null and other fields: %v %v", projected, notices)
		}
		if notices := sanitizeRichEditors(cc, map[string]any{}); len(notices) != 0 {
			t.Fatal("absent value reported")
		}
	})

	t.Run("settings forms accept a richeditor (Phase 18 F3)", func(t *testing.T) {
		fsys := fstest.MapFS{"models/settings/fields.yaml": &fstest.MapFile{Data: []byte("fields:\n    enabled:\n        type: switch\n    extra:\n        type: richeditor\n")}}
		item := pact.SettingsItem{Code: "demo", Label: "Demo", Form: "models/settings/fields.yaml", Model: "DemoSettings", NewModel: func() any { return &ucSettings{} }}
		if _, err := compileSetting("acme.unit", item, fsys); err != nil {
			t.Fatalf("richeditor refused on a settings form: %v", err)
		}
	})

	t.Run("settings forms refuse the controller-only features", func(t *testing.T) {
		for name, field := range map[string]string{
			"repeater":  "        type: repeater\n        form:\n            fields:\n                a:\n                    type: text\n",
			"dependsOn": "        type: dropdown\n        dependsOn: enabled\n",
		} {
			fsys := fstest.MapFS{"models/settings/fields.yaml": &fstest.MapFile{Data: []byte("fields:\n    enabled:\n        type: switch\n    extra:\n" + field)}}
			item := pact.SettingsItem{Code: "demo", Label: "Demo", Form: "models/settings/fields.yaml", Model: "DemoSettings", NewModel: func() any { return &ucSettings{} }}
			_, err := compileSetting("acme.unit", item, fsys)
			wantErr(t, err, "setting demo field extra", "supported in controller forms only")
			if name != "dependsOn" {
				wantErr(t, err, name)
			}
		}
	})

	t.Run("controllerFormOnly", func(t *testing.T) {
		for _, field := range []FormField{{Type: richEditorType}, {Type: repeaterType}, {Type: "dropdown", DependsOn: "type"}} {
			if err := controllerFormOnly(field); err == nil {
				t.Fatalf("%+v accepted", field)
			}
		}
		for _, field := range []FormField{{Type: "text"}, {Type: "dropdown"}, {Type: "markdown"}} {
			if err := controllerFormOnly(field); err != nil {
				t.Fatalf("%+v refused: %v", field, err)
			}
		}
	})
}

// ucSettings is the settings model of the settings refusal case.
type ucSettings struct {
	ID      uint   `gorm:"column:id;primaryKey"`
	Enabled bool   `gorm:"column:enabled"`
	Extra   string `gorm:"column:extra"`
}

func (*ucSettings) Fillable() []string       { return []string{"enabled", "extra"} }
func (*ucSettings) Rules() map[string]string { return map[string]string{} }