Feature/inner html element child (#82)

* SOme wokrd

* Renamed example

* Updated example

examples/dynamic-page.fql

@@ -5,10 +5,7 @@ WAIT_ELEMENT(doc, '.chartTrack__details', 5000)
 LET tracks = ELEMENTS(doc, '.chartTrack__details')
 
 FOR track IN tracks
-    LET username = ELEMENT(track, '.chartTrack__username')
-    LET title = ELEMENT(track, '.chartTrack__title')
-
     RETURN {
-        artist: TRIM(username.innerText),
-        track: TRIM(title.innerText)
+        artist: TRIM(INNER_TEXT(track, '.chartTrack__username')),
+        track: TRIM(INNER_TEXT(track, '.chartTrack__title'))
     }

examples/pagination.fql

@@ -0,0 +1,36 @@
+LET amazon = DOCUMENT('https://www.amazon.com/', true)
+
+INPUT(amazon, '#twotabsearchtextbox', @criteria)
+CLICK(amazon, '.nav-search-submit input[type="submit"]')
+WAIT_NAVIGATION(amazon)
+
+LET resultListSelector = '#s-results-list-atf'
+LET resultItemSelector = '.s-result-item'
+LET nextBtnSelector = '#pagnNextLink'
+LET vendorSelector = 'div > div > div > div.a-fixed-left-grid-col.a-col-right > div.a-row.a-spacing-small > div:nth-child(2) > span:nth-child(2)'
+LET priceSelector = 'div > div > div > div.a-fixed-left-grid-col.a-col-right > div:nth-child(4) > div.a-column.a-span7 > div:nth-child(1) > div:nth-child(3) > a > span.a-offscreen'
+LET altPriceSelector = 'div > div > div > div.a-fixed-left-grid-col.a-col-right > div:nth-child(2) > div.a-column.a-span7 > div:nth-child(1) > div:nth-child(3) > a > span.a-offscreen'
+
+LET result = (
+    FOR pageNum IN 1..@pages
+        LET clicked = pageNum == 1 ? false : CLICK(amazon, nextBtnSelector)
+        LET wait = clicked ? WAIT_NAVIGATION(amazon) : false
+        LET waitSelector = wait ? WAIT_ELEMENT(amazon, resultListSelector) : false
+
+        LET items = (
+            FOR el IN ELEMENTS(amazon, resultItemSelector)
+
+            LET priceTxtMain = INNER_TEXT(el, priceSelector)
+            LET priceTxt = priceTxtMain != "" ? priceTxtMain : INNER_TEXT(el, altPriceSelector)
+
+            RETURN {
+                title: INNER_TEXT(el, 'h2'),
+                vendor: INNER_TEXT(el, vendorSelector),
+                price: TO_FLOAT(SUBSTITUTE(priceTxt, "$", ""))
+            }
+        )
+
+        RETURN items
+)
+
+RETURN FLATTEN(result)

pkg/html/dynamic/document.go

@@ -320,149 +320,38 @@ func (doc *HTMLDocument) QuerySelectorAll(selector values.String) core.Value {
 }
 
 func (doc *HTMLDocument) URL() core.Value {
+	doc.Lock()
+	defer doc.Unlock()
+
 	return doc.url
 }
 
 func (doc *HTMLDocument) InnerHTMLBySelector(selector values.String) values.String {
-	res, err := eval.Eval(
-		doc.client,
-		fmt.Sprintf(`
-			var el = document.querySelector(%s);
+	doc.Lock()
+	defer doc.Unlock()
 
-			if (el == null) {
-				return "";
-			}
-
-			return el.innerHTML;
-		`, eval.ParamString(selector.String())),
-		true,
-		false,
-	)
-
-	if err != nil {
-		doc.logger.Error().
-			Timestamp().
-			Err(err).
-			Str("selector", selector.String()).
-			Msg("failed to get inner HTML by selector")
-
-		return values.EmptyString
-	}
-
-	if res.Type() == core.StringType {
-		return res.(values.String)
-	}
-
-	return values.EmptyString
+	return doc.element.InnerHTMLBySelector(selector)
 }
 
 func (doc *HTMLDocument) InnerHTMLBySelectorAll(selector values.String) *values.Array {
-	res, err := eval.Eval(
-		doc.client,
-		fmt.Sprintf(`
-			var result = [];
-			var elements = document.querySelectorAll(%s);
+	doc.Lock()
+	defer doc.Unlock()
 
-			if (elements == null) {
-				return result;
-			}
-
-			elements.forEach((i) => {
-				result.push(i.innerHTML);
-			});
-
-			return result;
-		`, eval.ParamString(selector.String())),
-		true,
-		false,
-	)
-
-	if err != nil {
-		doc.logger.Error().
-			Timestamp().
-			Err(err).
-			Str("selector", selector.String()).
-			Msg("failed to get an array of inner HTML by selector")
-
-		return values.NewArray(0)
-	}
-
-	if res.Type() == core.ArrayType {
-		return res.(*values.Array)
-	}
-
-	return values.NewArray(0)
+	return doc.element.InnerHTMLBySelectorAll(selector)
 }
 
 func (doc *HTMLDocument) InnerTextBySelector(selector values.String) values.String {
-	res, err := eval.Eval(
-		doc.client,
-		fmt.Sprintf(`
-			var el = document.querySelector(%s);
+	doc.Lock()
+	defer doc.Unlock()
 
-			if (el == null) {
-				return "";
-			}
-
-			return el.innerText;
-		`, eval.ParamString(selector.String())),
-		true,
-		false,
-	)
-
-	if err != nil {
-		doc.logger.Error().
-			Timestamp().
-			Err(err).
-			Str("selector", selector.String()).
-			Msg("failed to get inner text by selector")
-
-		return values.EmptyString
-	}
-
-	if res.Type() == core.StringType {
-		return res.(values.String)
-	}
-
-	return values.EmptyString
+	return doc.element.InnerHTMLBySelector(selector)
 }
 
 func (doc *HTMLDocument) InnerTextBySelectorAll(selector values.String) *values.Array {
-	res, err := eval.Eval(
-		doc.client,
-		fmt.Sprintf(`
-			var result = [];
-			var elements = document.querySelectorAll(%s);
+	doc.Lock()
+	defer doc.Unlock()
 
-			if (elements == null) {
-				return result;
-			}
-
-			elements.forEach((i) => {
-				result.push(i.innerText);
-			});
-
-			return result;
-		`, eval.ParamString(selector.String())),
-		true,
-		false,
-	)
-
-	if err != nil {
-		doc.logger.Error().
-			Timestamp().
-			Err(err).
-			Str("selector", selector.String()).
-			Msg("failed to get an array inner text by selector")
-
-		return values.NewArray(0)
-	}
-
-	if res.Type() == core.ArrayType {
-		return res.(*values.Array)
-	}
-
-	return values.NewArray(0)
+	return doc.element.InnerTextBySelectorAll(selector)
 }
 
 func (doc *HTMLDocument) ClickBySelector(selector values.String) (values.Boolean, error) {

pkg/html/dynamic/element.go

@@ -1,7 +1,6 @@
 package dynamic
 
 import (
-	"bytes"
 	"context"
 	"encoding/json"
 	"github.com/MontFerret/ferret/pkg/html/common"
@@ -9,7 +8,6 @@ import (
 	"github.com/MontFerret/ferret/pkg/html/dynamic/events"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
-	"github.com/PuerkitoBio/goquery"
 	"github.com/mafredri/cdp"
 	"github.com/mafredri/cdp/protocol/dom"
 	"github.com/rs/zerolog"
@@ -419,6 +417,83 @@ func (el *HTMLElement) InnerText() values.String {
 	return val.(values.String)
 }
 
+func (el *HTMLElement) InnerTextBySelector(selector values.String) values.String {
+	if !el.IsConnected() {
+		return values.EmptyString
+	}
+
+	ctx := context.Background()
+
+	selectorArgs := dom.NewQuerySelectorArgs(el.id, selector.String())
+	found, err := el.client.DOM.QuerySelector(ctx, selectorArgs)
+
+	if err != nil {
+		el.logger.Error().
+			Timestamp().
+			Err(err).
+			Int("id", int(el.id)).
+			Str("selector", selector.String()).
+			Msg("failed to retrieve nodes by selector")
+
+		return values.EmptyString
+	}
+
+	text, err := loadInnerText(el.client, found.NodeID)
+
+	if err != nil {
+		el.logger.Error().
+			Timestamp().
+			Err(err).
+			Int("id", int(el.id)).
+			Str("selector", selector.String()).
+			Msg("failed to load inner text for found child element")
+
+		return values.EmptyString
+	}
+
+	return text
+}
+
+func (el *HTMLElement) InnerTextBySelectorAll(selector values.String) *values.Array {
+	ctx := context.Background()
+
+	selectorArgs := dom.NewQuerySelectorAllArgs(el.id, selector.String())
+	res, err := el.client.DOM.QuerySelectorAll(ctx, selectorArgs)
+
+	if err != nil {
+		el.logger.Error().
+			Timestamp().
+			Err(err).
+			Int("id", int(el.id)).
+			Str("selector", selector.String()).
+			Msg("failed to retrieve nodes by selector")
+
+		return values.NewArray(0)
+	}
+
+	arr := values.NewArray(len(res.NodeIDs))
+
+	for _, id := range res.NodeIDs {
+		text, err := loadInnerText(el.client, id)
+
+		if err != nil {
+			el.logger.Error().
+				Timestamp().
+				Err(err).
+				Int("id", int(el.id)).
+				Str("selector", selector.String()).
+				Msg("failed to load inner text for found child element")
+
+			// return what we have
+			return arr
+		}
+
+		arr.Push(text)
+	}
+
+	return arr
+}
+
 func (el *HTMLElement) InnerHTML() values.String {
 	el.Lock()
 	defer el.Unlock()
@@ -426,6 +501,83 @@ func (el *HTMLElement) InnerHTML() values.String {
 	return el.innerHTML
 }
 
+func (el *HTMLElement) InnerHTMLBySelector(selector values.String) values.String {
+	if !el.IsConnected() {
+		return values.EmptyString
+	}
+
+	ctx := context.Background()
+
+	selectorArgs := dom.NewQuerySelectorArgs(el.id, selector.String())
+	found, err := el.client.DOM.QuerySelector(ctx, selectorArgs)
+
+	if err != nil {
+		el.logger.Error().
+			Timestamp().
+			Err(err).
+			Int("id", int(el.id)).
+			Str("selector", selector.String()).
+			Msg("failed to retrieve nodes by selector")
+
+		return values.EmptyString
+	}
+
+	text, err := loadInnerHTML(el.client, found.NodeID)
+
+	if err != nil {
+		el.logger.Error().
+			Timestamp().
+			Err(err).
+			Int("id", int(el.id)).
+			Str("selector", selector.String()).
+			Msg("failed to load inner HTML for found child element")
+
+		return values.EmptyString
+	}
+
+	return text
+}
+
+func (el *HTMLElement) InnerHTMLBySelectorAll(selector values.String) *values.Array {
+	ctx := context.Background()
+
+	selectorArgs := dom.NewQuerySelectorAllArgs(el.id, selector.String())
+	res, err := el.client.DOM.QuerySelectorAll(ctx, selectorArgs)
+
+	if err != nil {
+		el.logger.Error().
+			Timestamp().
+			Err(err).
+			Int("id", int(el.id)).
+			Str("selector", selector.String()).
+			Msg("failed to retrieve nodes by selector")
+
+		return values.NewArray(0)
+	}
+
+	arr := values.NewArray(len(res.NodeIDs))
+
+	for _, id := range res.NodeIDs {
+		text, err := loadInnerHTML(el.client, id)
+
+		if err != nil {
+			el.logger.Error().
+				Timestamp().
+				Err(err).
+				Int("id", int(el.id)).
+				Str("selector", selector.String()).
+				Msg("failed to load inner HTML for found child element")
+
+			// return what we have
+			return arr
+		}
+
+		arr.Push(text)
+	}
+
+	return arr
+}
+
 func (el *HTMLElement) Click() (values.Boolean, error) {
 	ctx, cancel := contextWithTimeout()
 
@@ -455,9 +607,7 @@ func (el *HTMLElement) loadInnerText() (core.Value, error) {
 		return h, nil
 	}
 
-	buff := bytes.NewBuffer([]byte(h))
-
-	parsed, err := goquery.NewDocumentFromReader(buff)
+	parser, err := parseInnerText(h.String())
 
 	if err != nil {
 		el.logger.Error().
@@ -469,7 +619,7 @@ func (el *HTMLElement) loadInnerText() (core.Value, error) {
 		return values.EmptyString, err
 	}
 
-	return values.NewString(parsed.Text()), nil
+	return parser, nil
 }
 
 func (el *HTMLElement) loadAttrs() (core.Value, error) {

pkg/html/dynamic/helpers.go

@@ -1,10 +1,12 @@
 package dynamic
 
 import (
+	"bytes"
 	"context"
 	"github.com/MontFerret/ferret/pkg/html/common"
 	"github.com/MontFerret/ferret/pkg/html/dynamic/events"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
+	"github.com/PuerkitoBio/goquery"
 	"github.com/mafredri/cdp"
 	"github.com/mafredri/cdp/protocol/dom"
 	"github.com/mafredri/cdp/protocol/page"
@@ -87,6 +89,32 @@ func loadInnerHTML(client *cdp.Client, id dom.NodeID) (values.String, error) {
 	return values.NewString(res.OuterHTML), err
 }
 
+func loadInnerText(client *cdp.Client, id dom.NodeID) (values.String, error) {
+	h, err := loadInnerHTML(client, id)
+
+	if err != nil {
+		return values.EmptyString, err
+	}
+
+	if h == values.EmptyString {
+		return h, nil
+	}
+
+	return parseInnerText(h.String())
+}
+
+func parseInnerText(innerHTML string) (values.String, error) {
+	buff := bytes.NewBuffer([]byte(innerHTML))
+
+	parsed, err := goquery.NewDocumentFromReader(buff)
+
+	if err != nil {
+		return values.EmptyString, err
+	}
+
+	return values.NewString(parsed.Text()), nil
+}
+
 func createChildrenArray(nodes []dom.Node) []dom.NodeID {
 	children := make([]dom.NodeID, len(nodes))
 

pkg/html/static/document.go

@@ -54,49 +54,3 @@ func (doc *HTMLDocument) Compare(other core.Value) int {
 func (doc *HTMLDocument) URL() core.Value {
 	return doc.url
 }
-
-func (doc *HTMLDocument) InnerHTMLBySelector(selector values.String) values.String {
-	selection := doc.selection.Find(selector.String())
-
-	str, err := selection.Html()
-
-	// TODO: log error
-	if err != nil {
-		return values.EmptyString
-	}
-
-	return values.NewString(str)
-}
-
-func (doc *HTMLDocument) InnerHTMLBySelectorAll(selector values.String) *values.Array {
-	selection := doc.selection.Find(selector.String())
-	arr := values.NewArray(selection.Length())
-
-	selection.Each(func(_ int, selection *goquery.Selection) {
-		str, err := selection.Html()
-
-		// TODO: log error
-		if err == nil {
-			arr.Push(values.NewString(str))
-		}
-	})
-
-	return arr
-}
-
-func (doc *HTMLDocument) InnerTextBySelector(selector values.String) values.String {
-	selection := doc.selection.Find(selector.String())
-
-	return values.NewString(selection.Text())
-}
-
-func (doc *HTMLDocument) InnerTextBySelectorAll(selector values.String) *values.Array {
-	selection := doc.selection.Find(selector.String())
-	arr := values.NewArray(selection.Length())
-
-	selection.Each(func(_ int, selection *goquery.Selection) {
-		arr.Push(values.NewString(selection.Text()))
-	})
-
-	return arr
-}

pkg/html/static/element.go

@@ -191,6 +191,52 @@ func (el *HTMLElement) QuerySelectorAll(selector values.String) core.Value {
 	return arr
 }
 
+func (el *HTMLElement) InnerHTMLBySelector(selector values.String) values.String {
+	selection := el.selection.Find(selector.String())
+
+	str, err := selection.Html()
+
+	// TODO: log error
+	if err != nil {
+		return values.EmptyString
+	}
+
+	return values.NewString(str)
+}
+
+func (el *HTMLElement) InnerHTMLBySelectorAll(selector values.String) *values.Array {
+	selection := el.selection.Find(selector.String())
+	arr := values.NewArray(selection.Length())
+
+	selection.Each(func(_ int, selection *goquery.Selection) {
+		str, err := selection.Html()
+
+		// TODO: log error
+		if err == nil {
+			arr.Push(values.NewString(str))
+		}
+	})
+
+	return arr
+}
+
+func (el *HTMLElement) InnerTextBySelector(selector values.String) values.String {
+	selection := el.selection.Find(selector.String())
+
+	return values.NewString(selection.Text())
+}
+
+func (el *HTMLElement) InnerTextBySelectorAll(selector values.String) *values.Array {
+	selection := el.selection.Find(selector.String())
+	arr := values.NewArray(selection.Length())
+
+	selection.Each(func(_ int, selection *goquery.Selection) {
+		arr.Push(values.NewString(selection.Text()))
+	})
+
+	return arr
+}
+
 func (el *HTMLElement) parseAttrs() *values.Object {
 	obj := values.NewObject()
 

pkg/runtime/expressions/operators/range.go

@@ -54,24 +54,37 @@ func (operator *RangeOperator) Exec(ctx context.Context, scope *core.Scope) (cor
 }
 
 func (operator *RangeOperator) Eval(_ context.Context, left, right core.Value) (core.Value, error) {
-	err := core.ValidateType(left, core.IntType)
+	err := core.ValidateType(left, core.IntType, core.FloatType)
 
 	if err != nil {
 		return values.None, core.SourceError(operator.src, err)
 	}
 
-	err = core.ValidateType(right, core.IntType)
+	err = core.ValidateType(right, core.IntType, core.FloatType)
 
 	if err != nil {
 		return values.None, core.SourceError(operator.src, err)
 	}
 
+	var start int
+	var end int
+
+	if left.Type() == core.FloatType {
+		start = int(left.(values.Float))
+	} else {
+		start = int(left.(values.Int))
+	}
+
+	if right.Type() == core.FloatType {
+		end = int(right.(values.Float))
+	} else {
+		end = int(right.(values.Int))
+	}
+
 	arr := values.NewArray(10)
-	start := left.(values.Int)
-	end := right.(values.Int)
 
 	for i := start; i <= end; i++ {
-		arr.Push(i)
+		arr.Push(values.NewInt(i))
 	}
 
 	return arr, nil

pkg/runtime/values/html.go

@@ -29,12 +29,6 @@ type (
 		QuerySelector(selector String) core.Value
 
 		QuerySelectorAll(selector String) core.Value
-	}
-
-	HTMLDocument interface {
-		HTMLNode
-
-		URL() core.Value
 
 		InnerHTMLBySelector(selector String) String
 
@@ -44,4 +38,10 @@ type (
 
 		InnerTextBySelectorAll(selector String) *Array
 	}
+
+	HTMLDocument interface {
+		HTMLNode
+
+		URL() core.Value
+	}
 )

pkg/stdlib/html/inner_html.go

@@ -8,9 +8,9 @@ import (
 
 /*
  * Returns inner HTML string of a matched element
- * @param doc (Document) - Parent document.
+ * @param doc (Document|Element) - Parent document or element.
  * @param selector (String) - String of CSS selector.
- * @returns (String) - Inner HTML string if an element found, otherwise NONE.
+ * @returns (String) - Inner HTML string if an element found, otherwise empty string.
  */
 func InnerHTML(_ context.Context, args ...core.Value) (core.Value, error) {
 	err := core.ValidateArgs(args, 2, 2)
@@ -19,7 +19,7 @@ func InnerHTML(_ context.Context, args ...core.Value) (core.Value, error) {
 		return values.EmptyString, err
 	}
 
-	err = core.ValidateType(args[0], core.HTMLDocumentType)
+	err = core.ValidateType(args[0], core.HTMLDocumentType, core.HTMLElementType)
 
 	if err != nil {
 		return values.None, err
@@ -31,8 +31,8 @@ func InnerHTML(_ context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	doc := args[0].(values.HTMLDocument)
+	node := args[0].(values.HTMLNode)
 	selector := args[1].(values.String)
 
-	return doc.InnerHTMLBySelector(selector), nil
+	return node.InnerHTMLBySelector(selector), nil
 }

pkg/stdlib/html/inner_html_all.go

@@ -8,7 +8,7 @@ import (
 
 /*
  * Returns an array of inner HTML strings of matched elements.
- * @param doc (Document) - Parent document.
+ * @param doc (HTMLDocument|HTMLElement) - Parent document or element.
  * @param selector (String) - String of CSS selector.
  * @returns (String) - An array of inner HTML strings if any element found, otherwise empty array.
  */
@@ -19,7 +19,7 @@ func InnerHTMLAll(_ context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	err = core.ValidateType(args[0], core.HTMLDocumentType)
+	err = core.ValidateType(args[0], core.HTMLDocumentType, core.HTMLElementType)
 
 	if err != nil {
 		return values.None, err
@@ -31,7 +31,7 @@ func InnerHTMLAll(_ context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	doc := args[0].(values.HTMLDocument)
+	doc := args[0].(values.HTMLNode)
 	selector := args[1].(values.String)
 
 	return doc.InnerHTMLBySelectorAll(selector), nil

pkg/stdlib/html/inner_text.go

@@ -8,9 +8,9 @@ import (
 
 /*
  * Returns inner text of a matched element
- * @param doc (Document) - Parent document.
+ * @param doc (HTMLDocument|HTMLElement) - Parent document or element.
  * @param selector (String) - String of CSS selector.
- * @returns (String) - Inner text if an element found, otherwise NONE.
+ * @returns (String) - Inner text if an element found, otherwise empty string.
  */
 func InnerText(_ context.Context, args ...core.Value) (core.Value, error) {
 	err := core.ValidateArgs(args, 2, 2)
@@ -19,7 +19,7 @@ func InnerText(_ context.Context, args ...core.Value) (core.Value, error) {
 		return values.EmptyString, err
 	}
 
-	err = core.ValidateType(args[0], core.HTMLDocumentType)
+	err = core.ValidateType(args[0], core.HTMLDocumentType, core.HTMLElementType)
 
 	if err != nil {
 		return values.None, err
@@ -31,7 +31,7 @@ func InnerText(_ context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	doc := args[0].(values.HTMLDocument)
+	doc := args[0].(values.HTMLNode)
 	selector := args[1].(values.String)
 
 	return doc.InnerTextBySelector(selector), nil

pkg/stdlib/html/inner_text_all.go

@@ -8,7 +8,7 @@ import (
 
 /*
  * Returns an array of inner text of matched elements.
- * @param doc (Document) - Parent document.
+ * @param doc (HTMLDocument|HTMLElement) - Parent document or element.
  * @param selector (String) - String of CSS selector.
  * @returns (String) - An array of inner text if any element found, otherwise empty array.
  */
@@ -19,7 +19,7 @@ func InnerTextAll(_ context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	err = core.ValidateType(args[0], core.HTMLDocumentType)
+	err = core.ValidateType(args[0], core.HTMLDocumentType, core.HTMLElementType)
 
 	if err != nil {
 		return values.None, err
@@ -31,7 +31,7 @@ func InnerTextAll(_ context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	doc := args[0].(values.HTMLDocument)
+	doc := args[0].(values.HTMLNode)
 	selector := args[1].(values.String)
 
 	return doc.InnerTextBySelectorAll(selector), nil