Search Parsing (#379)

* Update parser interface and add search parsing

* Add custom jsoup method and search parse method

* Bind new searchview

* Add search view cache

1 files changed, 73 insertions, 0 deletions

diff --git a/app/src/main/kotlin/com/pitchedapps/frost/parsers/SearchParser.kt b/app/src/main/kotlin/com/pitchedapps/frost/parsers/SearchParser.kt
new file mode 100644
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+++ b/app/src/main/kotlin/com/pitchedapps/frost/parsers/SearchParser.kt
@@ -0,0 +1,73 @@
+package com.pitchedapps.frost.parsers
+
+import ca.allanwang.kau.utils.withMaxLength
+import com.pitchedapps.frost.facebook.FbItem
+import com.pitchedapps.frost.facebook.formattedFbUrlCss
+import com.pitchedapps.frost.utils.L
+import com.pitchedapps.frost.utils.frostJsoup
+import org.jsoup.Jsoup
+import org.jsoup.nodes.Document
+import org.jsoup.nodes.Element
+
+/**
+ * Created by Allan Wang on 2017-10-09.
+ */
+object SearchParser : FrostParser<List<FrostSearch>> by SearchParserImpl() {
+    fun query(input: String): List<FrostSearch>? {
+        val url = "${FbItem.SEARCH.url}?q=$input"
+        L.i(null, "Search Query $url")
+        return parse(frostJsoup(url))
+    }
+}
+
+enum class SearchKeys(val key: String) {
+    USERS("keywords_users"),
+    EVENTS("keywords_events")
+}
+
+/**
+ * As far as I'm aware, all links are independent, so the queries don't matter
+ * A lot of it is tracking information, which I'll strip away
+ * Other text items are formatted for safety
+ */
+class FrostSearch(href: String, title: String, description: String?) {
+    val href = with(href.indexOf("?")) { if (this == -1) href else href.substring(0, this) }
+    val title = title.format()
+    val description = description?.format()
+
+    private fun String.format() = replace("\n", " ").withMaxLength(50)
+
+    override fun toString(): String
+            = "FrostSearch(href=$href, title=$title, description=$description)"
+
+}
+
+private class SearchParserImpl : FrostParserBase<List<FrostSearch>>() {
+    override fun parse(doc: Document): List<FrostSearch>? {
+        val container: Element = doc.getElementById("BrowseResultsContainer")
+                ?: doc.getElementById("root")
+                ?: return null
+        val hrefSet = mutableSetOf<String>()
+        /**
+         * When mapping items, some links are duplicated because they are nested below a main one
+         * We will filter out search items whose links are already in the list
+         *
+         * Removed [data-store*=result_id]
+         */
+        return container.select("a.touchable.primary[href]").filter(Element::hasText).mapNotNull {
+            val item = FrostSearch(it.attr("href").formattedFbUrlCss,
+                    it.select("._uok").first()?.text() ?: it.text(),
+                    it.select("._1tcc").first()?.text())
+            if (hrefSet.contains(item.href)) return@mapNotNull null
+            hrefSet.add(item.href)
+            item
+        }
+    }
+
+    override fun textToDoc(text: String): Document? = Jsoup.parse(text)
+
+    override fun debugImpl(data: List<FrostSearch>, result: MutableList<String>) {
+        result.addAll(data.map(FrostSearch::toString))
+    }
+
+}
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