Refactor page placement.

src/main/kotlin/html5up/forty/common.kt

@@ -1,7 +1,7 @@
 package html5up.forty
 
 import kotlinx.html.*
-import space.kscience.snark.SiteContext
+import space.kscience.snark.SiteData
 import space.kscience.snark.resolveRef
 
 
@@ -201,7 +201,7 @@ internal fun FlowContent.fortyFooter() {
     }
 }
 
-context(SiteContext) internal fun BODY.fortyScripts() {
+context(SiteData) internal fun BODY.fortyScripts() {
     script {
         src = resolveRef("assets/js/jquery.min.js")
     }

src/main/kotlin/html5up/forty/landing.kt

@@ -1,9 +1,9 @@
 package html5up.forty
 
 import kotlinx.html.*
-import space.kscience.snark.SiteContext
+import space.kscience.snark.SiteData
 
-context(SiteContext) internal fun HTML.landing(){
+context(SiteData) internal fun HTML.landing(){
     head {
         title {
         }

src/main/kotlin/html5up/forty/page.kt

@@ -1,10 +1,10 @@
 package html5up.forty
 
 import kotlinx.html.*
-import space.kscience.snark.SiteContext
+import space.kscience.snark.SiteData
 import space.kscience.snark.resolveRef
 
-context(SiteContext) internal fun HTML.fortyPage(){
+context(SiteData) internal fun HTML.fortyPage(){
     head {
         title {
         }

src/main/kotlin/ru/mipt/spc/master.kt

@@ -80,7 +80,7 @@ private val PROGRAM_PATH: Name = CONTENT_NODE_NAME + "program"
 private val RECOMMENDED_COURSES_PATH: Name = CONTENT_NODE_NAME + "recommendedCourses"
 private val PARTNERS_PATH: Name = CONTENT_NODE_NAME + "partners"
 
-context(SiteContext) private fun FlowContent.programSection() {
+context(SiteData) private fun FlowContent.programSection() {
     val programBlock = resolveHtml(PROGRAM_PATH)!!
     val recommendedBlock = resolveHtml(RECOMMENDED_COURSES_PATH)!!
     div("inner") {
@@ -97,7 +97,7 @@ context(SiteContext) private fun FlowContent.programSection() {
     }
 }
 
-context(SiteContext) private fun FlowContent.partners() {
+context(SiteData) private fun FlowContent.partners() {
     //val partnersData: Meta = resolve<Any>(PARTNERS_PATH)?.meta ?: Meta.EMPTY
     val partnersData: Meta = runBlocking { data.getByType<Meta>(PARTNERS_PATH)?.await() } ?: Meta.EMPTY
     div("inner") {
@@ -127,7 +127,7 @@ context(SiteContext) private fun FlowContent.partners() {
 //    val photo: String? by meta.string()
 //}
 
-context(SiteContext) private fun FlowContent.team() {
+context(SiteData) private fun FlowContent.team() {
     val team = findByType("magprog_team").values.sortedBy { it.order }
 
     div("inner") {
@@ -182,7 +182,7 @@ context(SiteContext) private fun FlowContent.team() {
 //    }
 }
 
-context(SiteContext) private fun FlowContent.mentors() {
+context(SiteData) private fun FlowContent.mentors() {
     val mentors = findByType("magprog_mentor").entries.sortedBy { it.value.id }
 
     div("inner") {
@@ -219,12 +219,12 @@ context(SiteContext) private fun FlowContent.mentors() {
     }
 }
 
-context(SiteContext) internal fun FlowContent.contacts() {
+context(SiteData) internal fun FlowContent.contacts() {
 
 }
 
 
-context(SiteContext) internal fun HTML.magProgHead(title: String) {
+context(SiteData) internal fun HTML.magProgHead(title: String) {
     head {
         this.title = title
         meta {
@@ -251,7 +251,7 @@ context(SiteContext) internal fun HTML.magProgHead(title: String) {
     }
 }
 
-context(SiteContext) internal fun BODY.magProgFooter() {
+context(SiteData) internal fun BODY.magProgFooter() {
     footer("wrapper style1-alt") {
         id = "footer"
         div("inner") {
@@ -296,7 +296,7 @@ internal fun Application.spcMaster(context: Context, dataPath: Path, prefix: Str
 
     val snark = context.fetch(SnarkPlugin)
 
-    val magProgSiteContext: SiteContext = snark.read(dataPath.resolve("content"), prefix)
+    val magProgSiteContext: SiteData = snark.readDirectory(dataPath.resolve("content"), prefix)
 
     routing {
         route(prefix) {

src/main/kotlin/ru/mipt/spc/spcCollection.kt

@@ -15,7 +15,7 @@ import kotlin.collections.component1
 import kotlin.collections.component2
 import kotlin.collections.set
 
-context(SiteContext) private fun FlowContent.spcSpotlightContent(
+context(SiteData) private fun FlowContent.spcSpotlightContent(
     landing: HtmlData,
     content: Map<Name, HtmlData>,
 ) {
@@ -88,11 +88,12 @@ context(SiteContext) private fun FlowContent.spcSpotlightContent(
 }
 
 
-context(SiteContext) internal fun SiteBuilder.spcSpotlight(
+context(SiteData) internal fun SiteBuilder.spcSpotlight(
-    name: String,
+    address: String,
     contentFilter: (Name, Meta) -> Boolean,
 ) {
-    val body = resolveHtml(name.parseAsName()) ?: error("Could not find body for $name")
+    val name = address.parseAsName()
+    val body = resolveHtml(name) ?: error("Could not find body for $name")
     val content = resolveAllHtml(contentFilter)
 
     val meta = body.meta
@@ -109,7 +110,7 @@ context(SiteContext) internal fun SiteBuilder.spcSpotlight(
     }
 
     content.forEach { (name, contentBody) ->
-        page(name.tokens.joinToString("/")){
+        page(name){
             spcPageContent(contentBody.meta) {
                 htmlData(contentBody)
             }

src/main/kotlin/ru/mipt/spc/spcHome.kt

@@ -9,18 +9,20 @@ import space.kscience.dataforge.context.Context
 import space.kscience.dataforge.context.error
 import space.kscience.dataforge.context.fetch
 import space.kscience.dataforge.context.logger
-import space.kscience.dataforge.data.filterByType
+import space.kscience.dataforge.data.Data
-import space.kscience.dataforge.data.forEach
 import space.kscience.dataforge.meta.Meta
 import space.kscience.dataforge.meta.get
 import space.kscience.dataforge.meta.string
-import space.kscience.dataforge.names.*
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.asName
+import space.kscience.dataforge.names.startsWith
 import space.kscience.dataforge.values.string
 import space.kscience.snark.*
 import java.nio.file.Path
+import kotlin.reflect.typeOf
 
 
-context(SiteContext) internal fun HTML.spcPageContent(
+context(SiteData) internal fun HTML.spcPageContent(
     meta: Meta,
     title: String = meta["title"].string ?: SPC_TITLE,
     fragment: FlowContent.() -> Unit,
@@ -58,18 +60,18 @@ context(SiteContext) internal fun HTML.spcPageContent(
 }
 
 
-context(SiteContext) internal fun SiteBuilder.spcPage(subRoute: String, meta: Meta, fragment: FlowContent.() -> Unit) {
+internal fun SiteBuilder.spcPage(subRoute: Name, meta: Meta, fragment: FlowContent.() -> Unit) {
     page(subRoute) {
         spcPageContent(meta, fragment = fragment)
     }
 }
 
-context(SiteContext) internal fun SiteBuilder.spcPage(
+internal fun SiteBuilder.spcPage(
-    subRoute: String,
+    subRoute: Name,
-    dataPath: Name = subRoute.replace("/", ".").parseAsName(),
+    dataPath: Name = subRoute,
     more: FlowContent.() -> Unit = {},
 ) {
-    val data = resolveHtml(dataPath)
+    val data = data.resolveHtml(dataPath)
     if (data != null) {
         spcPage(subRoute, data.meta) {
             htmlData(data)
@@ -80,34 +82,46 @@ context(SiteContext) internal fun SiteBuilder.spcPage(
     }
 }
 
-/**
+@Suppress("UNCHECKED_CAST")
- * Route a directory
+internal val FortyDataRenderer: SiteBuilder.(Data<*>) -> Unit = { data ->
- */
+    if(data.type == typeOf<HtmlFragment>()) {
-context(SiteContext) internal fun SiteBuilder.spcDirectory(
+        data as Data<HtmlFragment>
-    subRoute: String,
+        page {
-    dataPath: Name = subRoute.replace("/", ".").parseAsName(),
+            spcPageContent(data.meta) {
-) {
+                htmlData(data)
-    data.filterByType<HtmlFragment> { name, _ -> name.startsWith(dataPath) }.forEach { html ->
-        val pageName = if (html.name.lastOrNull()?.body == SiteContext.INDEX_PAGE_NAME) {
-            html.name.cutLast()
-        } else {
-            html.name
             }
-
-        spcPage(pageName.tokens.joinToString(separator = "/"), html.meta) {
-            htmlData(html)
         }
     }
 }
 
-context(SiteContext) internal fun SiteBuilder.spcPage(
+///**
+// * Route a directory
+// */
+//internal fun SiteBuilder.spcDirectory(
+//    subRoute: String,
+//    dataPath: Name = subRoute.replace("/", ".").parseAsName(),
+//) {
+//    data.filterByType<HtmlFragment> { name, _ -> name.startsWith(dataPath) }.forEach { html ->
+//        val pageName = if (html.name.lastOrNull()?.body == SiteData.INDEX_PAGE_NAME) {
+//            html.name.cutLast()
+//        } else {
+//            html.name
+//        }
+//
+//        spcPage(pageName.tokens.joinToString(separator = "/"), html.meta) {
+//            htmlData(html)
+//        }
+//    }
+//}
+
+internal fun SiteBuilder.spcPage(
     name: Name,
     more: FlowContent.() -> Unit = {},
 ) {
-    spcPage(name.tokens.joinToString("/"), name, more)
+    spcPage(name, name, more)
 }
 
-context(SiteContext, HTML) private fun HTML.spcHome() {
+context(SiteData, HTML) private fun HTML.spcHome() {
     spcHead()
     body("is-preload") {
         wrapper {
@@ -298,18 +312,18 @@ internal fun Application.spcHome(context: Context, rootPath: Path, prefix: Strin
 
     val snark = context.fetch(SnarkPlugin)
 
-    val homePageContext = snark.read(rootPath.resolve("content"), prefix)
+    val homePageContext = snark.readDirectory(rootPath.resolve("content"), prefix)
 
     routing {
         route(prefix) {
             snarkSite(homePageContext) {
-                staticDirectory("assets", rootPath.resolve("assets"))
+                assetDirectory("assets", rootPath.resolve("assets"))
-                staticDirectory("images", rootPath.resolve("images"))
+                assetDirectory("images", rootPath.resolve("images"))
 
                 page { spcHome() }
 
-                spcDirectory("consulting")
+                pages("consulting", dataRenderer = FortyDataRenderer)
-                spcDirectory("ru/consulting")
+                //pages("ru.consulting".parseAsName(), dataRenderer = FortyDataRenderer)
 
                 spcSpotlight("team") { _, m -> m["type"].string == "team" }
                 spcSpotlight("research") { name, m -> name.startsWith("projects".asName()) && m["type"].string == "project" }

src/main/kotlin/ru/mipt/spc/spcMisc.kt

@@ -1,14 +1,14 @@
 package ru.mipt.spc
 
 import kotlinx.html.*
-import space.kscience.snark.SiteContext
+import space.kscience.snark.SiteData
 import space.kscience.snark.homeRef
 import space.kscience.snark.resolveRef
 
 
 internal const val SPC_TITLE = "Scientific Programming Centre"
 
-context(SiteContext) internal fun HTML.spcHead(title: String = SPC_TITLE) {
+context(SiteData) internal fun HTML.spcHead(title: String = SPC_TITLE) {
     head {
         title {
             +title
@@ -27,7 +27,7 @@ context(SiteContext) internal fun HTML.spcHead(title: String = SPC_TITLE) {
     }
 }
 
-context(SiteContext) internal fun FlowContent.spcHomeMenu() {
+context(SiteData) internal fun FlowContent.spcHomeMenu() {
     nav {
         id = "menu"
         ul("links") {
@@ -79,7 +79,7 @@ context(SiteContext) internal fun FlowContent.spcHomeMenu() {
     }
 }
 
-context(SiteContext) internal fun FlowContent.spcFooter() {
+context(SiteData) internal fun FlowContent.spcFooter() {
     footer {
         id = "footer"
         div("inner") {
@@ -129,7 +129,7 @@ context(SiteContext) internal fun FlowContent.spcFooter() {
     }
 }
 
-context(SiteContext) internal fun FlowContent.wrapper(contentBody: FlowContent.() -> Unit) {
+context(SiteData) internal fun FlowContent.wrapper(contentBody: FlowContent.() -> Unit) {
     div {
         id = "wrapper"
         // Header

src/main/kotlin/space/kscience/snark/SiteBuilder.kt

@@ -9,71 +9,78 @@ import io.ktor.server.routing.get
 import kotlinx.html.HTML
 import space.kscience.dataforge.context.Context
 import space.kscience.dataforge.context.ContextAware
+import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.parseAsName
 import java.nio.file.Path
 
+internal fun Name.toWebPath() = tokens.joinToString(separator = "/")
 /**
  * An abstraction, which is used to render sites to the different rendering engines
  */
 interface SiteBuilder : ContextAware {
 
-    val siteContext: SiteContext
+    val data: SiteData
 
-    override val context: Context get() = siteContext.context
+    override val context: Context get() = data.context
 
-    fun staticFile(remotePath: String, file: Path)
+    fun assetFile(remotePath: String, file: Path)
 
-    fun staticDirectory(remotePath: String, directory: Path)
+    fun assetDirectory(remotePath: String, directory: Path)
 
-    fun staticResourceFile(remotePath: String, resourcesPath: String)
+    fun assetResourceFile(remotePath: String, resourcesPath: String)
 
-    fun staticResourceDirectory(resourcesPath: String)
+    fun assetResourceDirectory(resourcesPath: String)
 
-    fun page(route: String = "", content: context(SiteContext, HTML) () -> Unit)
+    fun page(route: Name = Name.EMPTY, content: context(SiteData, HTML) () -> Unit)
 
     /**
      * Create a route
      */
-    fun route(subRoute: String): SiteBuilder
+    fun route(subRoute: Name): SiteBuilder
 }
 
-public inline fun SiteBuilder.route(route: String, block: SiteBuilder.() -> Unit) {
+public inline fun SiteBuilder.route(route: Name, block: SiteBuilder.() -> Unit) {
     route(route).apply(block)
 }
 
-class KtorSiteRoute(override val siteContext: SiteContext, private val ktorRoute: Route) : SiteBuilder {
+public inline fun SiteBuilder.route(route: String, block: SiteBuilder.() -> Unit) {
-    override fun staticFile(remotePath: String, file: Path) {
+    route(route.parseAsName()).apply(block)
+}
+
+class KtorSiteRoute(override val data: SiteData, private val ktorRoute: Route) : SiteBuilder {
+    override fun assetFile(remotePath: String, file: Path) {
         ktorRoute.file(remotePath, file.toFile())
     }
 
-    override fun staticDirectory(remotePath: String, directory: Path) {
+    override fun assetDirectory(remotePath: String, directory: Path) {
         ktorRoute.static(remotePath) {
             files(directory.toFile())
         }
     }
 
-    override fun page(route: String, content: context(SiteContext, HTML)() -> Unit) {
+    override fun page(route: Name, content: context(SiteData, HTML)() -> Unit) {
-        ktorRoute.get(route) {
+        ktorRoute.get(route.toWebPath()) {
             call.respondHtml {
-                content(siteContext.copyWithRequestHost(call.request), this)
+                content(data.copyWithRequestHost(call.request), this)
             }
         }
     }
 
-    override fun route(subRoute: String): SiteBuilder =
+    override fun route(subRoute: Name): SiteBuilder =
-        KtorSiteRoute(siteContext, ktorRoute.createRouteFromPath(subRoute))
+        KtorSiteRoute(data, ktorRoute.createRouteFromPath(subRoute.toWebPath()))
 
-    override fun staticResourceFile(remotePath: String, resourcesPath: String) {
+    override fun assetResourceFile(remotePath: String, resourcesPath: String) {
         ktorRoute.resource(resourcesPath, resourcesPath)
     }
 
-    override fun staticResourceDirectory(resourcesPath: String) {
+    override fun assetResourceDirectory(resourcesPath: String) {
         ktorRoute.resources(resourcesPath)
     }
 }
 
 inline fun Route.snarkSite(
-    siteContext: SiteContext,
+    siteContext: SiteData,
-    block: context(SiteContext, SiteBuilder)() -> Unit,
+    block: context(SiteData, SiteBuilder)() -> Unit,
 ) {
     block(siteContext, KtorSiteRoute(siteContext, this@snarkSite))
 }

src/main/kotlin/space/kscience/snark/SiteData.kt

@@ -15,15 +15,15 @@ import space.kscience.dataforge.meta.string
 import space.kscience.dataforge.names.Name
 import space.kscience.dataforge.names.plus
 import space.kscience.dataforge.names.startsWith
-import space.kscience.snark.SiteContext.Companion.INDEX_PAGE_NAME
+import space.kscience.snark.SiteData.Companion.INDEX_PAGE_NAME
 import java.nio.file.Path
 
-data class SiteContext(
+data class SiteData(
     val snark: SnarkPlugin,
-    val path: String,
-    val meta: Meta,
     val data: DataTree<*>,
-) : ContextAware {
+    val urlPath: String,
+    override val meta: Meta = data.meta
+) : ContextAware, DataTree<Any> by data {
 
     override val context: Context get() = snark.context
 
@@ -37,15 +37,15 @@ data class SiteContext(
 /**
  * Resolve a resource full path by its name
  */
-fun SiteContext.resolveRef(name: String): String = "${path.removeSuffix("/")}/$name"
+fun SiteData.resolveRef(name: String): String = "${urlPath.removeSuffix("/")}/$name"
 
-fun SiteContext.resolveRef(name: Name): String = "${path.removeSuffix("/")}/${name.tokens.joinToString("/")}"
+fun SiteData.resolveRef(name: Name): String = "${urlPath.removeSuffix("/")}/${name.tokens.joinToString("/")}"
 
 /**
  * Resolve a Html builder by its full name
  */
-fun SiteContext.resolveHtml(name: Name): HtmlData? {
+fun DataTree<*>.resolveHtml(name: Name): HtmlData? {
-    val resolved = (data.getByType<HtmlFragment>(name) ?: data.getByType<HtmlFragment>(name + INDEX_PAGE_NAME))
+    val resolved = (getByType<HtmlFragment>(name) ?: getByType<HtmlFragment>(name + INDEX_PAGE_NAME))
 
     return resolved?.takeIf {
         it.published //TODO add language confirmation
@@ -55,45 +55,45 @@ fun SiteContext.resolveHtml(name: Name): HtmlData? {
 /**
  * Find all Html blocks using given name/meta filter
  */
-fun SiteContext.resolveAllHtml(predicate: (name: Name, meta: Meta) -> Boolean): Map<Name, HtmlData> =
+fun DataTree<*>.resolveAllHtml(predicate: (name: Name, meta: Meta) -> Boolean): Map<Name, HtmlData> =
-    data.filterByType<HtmlFragment> { name, meta ->
+    filterByType<HtmlFragment> { name, meta ->
         predicate(name, meta)
                 && meta["published"].string != "false"
         //TODO add language confirmation
     }.asSequence().associate { it.name to it.data }
 
-val SiteContext.homeRef get() = resolveRef("").removeSuffix("/")
+val SiteData.homeRef get() = resolveRef("").removeSuffix("/")
 
 
-fun SiteContext.findByType(contentType: String, baseName: Name = Name.EMPTY) = resolveAllHtml { name, meta ->
+fun SiteData.findByType(contentType: String, baseName: Name = Name.EMPTY) = resolveAllHtml { name, meta ->
     name.startsWith(baseName) && meta["content_type"].string == contentType
 }
 
 internal val Data<*>.published: Boolean get() = meta["published"].string != "false"
 
-fun SnarkPlugin.siteContext(rootUrl: String, data: DataTree<*>): SiteContext =
+fun SnarkPlugin.readData(data: DataTree<*>, rootUrl: String = "/"): SiteData =
-    SiteContext(this, rootUrl, data.meta, data)
+    SiteData(this, data, rootUrl)
 
-fun SnarkPlugin.read(path: Path, rootUrl: String = "/"): SiteContext {
+fun SnarkPlugin.readDirectory(path: Path, rootUrl: String = "/"): SiteData {
     val parsedData: DataTree<Any> = readDirectory(path)
 
-    return siteContext(rootUrl, parsedData)
+    return readData(parsedData, rootUrl)
 }
 
 @PublishedApi
-internal fun SiteContext.copyWithRequestHost(request: ApplicationRequest): SiteContext {
+internal fun SiteData.copyWithRequestHost(request: ApplicationRequest): SiteData {
     val uri = URLBuilder(
         protocol = URLProtocol.createOrDefault(request.origin.scheme),
         host = request.host(),
         port = request.port(),
-        pathSegments = path.split("/"),
+        pathSegments = urlPath.split("/"),
     )
-    return copy(path = uri.buildString())
+    return copy(urlPath = uri.buildString())
 }
 
 /**
- * Substitute uri in [SiteContext] with uri in the call to properly resolve relative refs. Only host properties are substituted.
+ * Substitute uri in [SiteData] with uri in the call to properly resolve relative refs. Only host properties are substituted.
  */
-context(SiteContext) inline fun withRequest(request: ApplicationRequest, block: context(SiteContext) () -> Unit) {
+context(SiteData) inline fun withRequest(request: ApplicationRequest, block: context(SiteData) () -> Unit) {
     block(copyWithRequestHost(request))
 }

src/main/kotlin/space/kscience/snark/SiteLayout.kt

@@ -1,22 +1,25 @@
 package space.kscience.snark
 
 import kotlinx.coroutines.runBlocking
-import space.kscience.dataforge.data.DataTree
+import space.kscience.dataforge.data.Data
 import space.kscience.dataforge.data.DataTreeItem
 import space.kscience.dataforge.data.await
+import space.kscience.dataforge.data.getItem
 import space.kscience.dataforge.meta.Meta
 import space.kscience.dataforge.meta.get
 import space.kscience.dataforge.meta.getIndexed
 import space.kscience.dataforge.meta.string
 import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.NameToken
 import space.kscience.dataforge.names.asName
-import space.kscience.dataforge.names.plus
+import space.kscience.dataforge.names.parseAsName
-import space.kscience.snark.SiteLayout.Companion.DESIGNATION_KEY
+import space.kscience.snark.SiteLayout.Companion.ASSETS_KEY
+import space.kscience.snark.SiteLayout.Companion.INDEX_PAGE_TOKEN
 import space.kscience.snark.SiteLayout.Companion.LAYOUT_KEY
 import java.nio.file.Path
 import kotlin.reflect.typeOf
 
-internal fun SiteBuilder.staticFrom(rootMeta: Meta) {
+internal fun SiteBuilder.assetsFrom(rootMeta: Meta) {
     rootMeta.getIndexed("resource".asName()).forEach { (_, meta) ->
 
         val path by meta.string()
@@ -25,75 +28,109 @@ internal fun SiteBuilder.staticFrom(rootMeta: Meta) {
         path?.let { resourcePath ->
             //If remote path provided, use a single resource
             remotePath?.let {
-                staticResourceFile(it, resourcePath)
+                assetResourceFile(it, resourcePath)
                 return@forEach
             }
 
-
             //otherwise use package resources
-            staticResourceDirectory(resourcePath)
+            assetResourceDirectory(resourcePath)
         }
     }
 
     rootMeta.getIndexed("file".asName()).forEach { (_, meta) ->
         val remotePath by meta.string { error("File remote path is not provided") }
         val path by meta.string { error("File path is not provided") }
-        staticFile(remotePath, Path.of(path))
+        assetFile(remotePath, Path.of(path))
     }
 
     rootMeta.getIndexed("directory".asName()).forEach { (_, meta) ->
         val path by meta.string { error("Directory path is not provided") }
-        staticDirectory("", Path.of(path))
+        assetDirectory("", Path.of(path))
     }
 }
 
 /**
- * Represent pages in a [DataTree]
+ * Recursively renders the data items in [data]. If [LAYOUT_KEY] is defined in an item, use it to load
+ * layout from the context, otherwise render children nodes as name segments and individual data items using [dataRenderer].
  */
-fun SiteBuilder.data(data: DataTreeItem<*>, prefix: Name = Name.EMPTY) {
+fun SiteBuilder.pages(
+    data: DataTreeItem<*>,
+    dataRenderer: SiteBuilder.(Data<*>) -> Unit = SiteLayout.defaultDataRenderer,
+) {
     val layoutMeta = data.meta[LAYOUT_KEY]
     if (layoutMeta != null) {
         //use layout if it is defined
-        siteContext.snark.layout(layoutMeta).render(data)
+        this.data.snark.layout(layoutMeta).render(data)
     } else {
         when (data) {
             is DataTreeItem.Node -> {
                 data.tree.items.forEach { (token, item) ->
-                    data(item, prefix + token)
+                    //Don't apply index token
+                    if (token == INDEX_PAGE_TOKEN) {
+                        pages(item, dataRenderer)
+                    }
+                    route(token.toString()) {
+                        pages(item, dataRenderer)
+                    }
                 }
             }
             is DataTreeItem.Leaf -> {
-                val item = data.data
+                dataRenderer.invoke(this, data.data)
-                if (item.type == typeOf<HtmlData>() && item.meta[DESIGNATION_KEY].string == "page") {
-                    route(prefix.tokens.joinToString(separator = "/")) {
-                        page {
-                            @Suppress("UNCHECKED_CAST")
-                            val pageFragment: HtmlFragment = runBlocking { item.await() as HtmlFragment }
-                            pageFragment.invoke(consumer)
-                        }
-                        staticFrom(item.meta)
             }
         }
+        data.meta[ASSETS_KEY]?.let {
+            assetsFrom(it)
+        }
+    }
+    //TODO watch for changes
+}
+
+/**
+ * Render all pages in a node with given name
+ */
+fun SiteBuilder.pages(
+    dataPath: Name,
+    remotePath: Name = dataPath,
+    dataRenderer: SiteBuilder.(Data<*>) -> Unit = SiteLayout.defaultDataRenderer,
+) {
+    val item = data.getItem(dataPath) ?: error("No data found by name $dataPath")
+    route(remotePath) {
+        pages(item, dataRenderer)
     }
 }
 
-    }
+fun SiteBuilder.pages(
-    //TODO watch for changes
+    dataPath: String,
+    remotePath: Name = dataPath.parseAsName(),
+    dataRenderer: SiteBuilder.(Data<*>) -> Unit = SiteLayout.defaultDataRenderer,
+) {
+    pages(dataPath.parseAsName(), remotePath, dataRenderer = dataRenderer)
 }
 
 
 fun interface SiteLayout {
 
-    context(SiteBuilder) fun render(data: DataTreeItem<*>)
+    context(SiteBuilder) fun render(item: DataTreeItem<*>)
 
     companion object {
-        internal const val DESIGNATION_KEY = "designation"
         const val LAYOUT_KEY = "layout"
+        const val ASSETS_KEY = "assets"
+        val INDEX_PAGE_TOKEN = NameToken("index")
+
+        val defaultDataRenderer: SiteBuilder.(Data<*>) -> Unit = { data ->
+            if (data.type == typeOf<HtmlData>()) {
+                page {
+                    @Suppress("UNCHECKED_CAST")
+                    val pageFragment: HtmlFragment = runBlocking { data.await() as HtmlFragment }
+                    pageFragment.invoke(consumer)
+                }
+            }
+        }
     }
 }
 
 object DefaultSiteLayout : SiteLayout {
-    context(SiteBuilder) override fun render(data: DataTreeItem<*>) {
+    context(SiteBuilder) override fun render(item: DataTreeItem<*>) {
-        data(data)
+        pages(item)
     }
 }

src/main/kotlin/space/kscience/snark/site.kt

@@ -1,26 +0,0 @@
-package ru.mipt.spc
-
-//class SiteBuilderAction : AbstractAction<Any, HtmlFragment>(typeOf<HtmlFragment>()) {
-//
-//    private val pageBuilders = HashMap<Name, (DataSet<*>) -> HtmlData>()
-//
-//    fun page(name: Name, meta: Meta = Meta.EMPTY, builder: context(PageContext) TagConsumer<*>.() -> Unit) {
-//        val prefix = name.tokens.joinToString(separator = "/", prefix = "/")
-//        pageBuilders[name] = { dataset ->
-//            val fragment: HtmlFragment = {
-//                builder.invoke(PageContext(prefix, dataset), this)
-//            }
-//            Data(fragment, meta.copy {
-//                "name" put name.toString()
-//            })
-//        }
-//    }
-//
-//
-//    override fun DataSetBuilder<HtmlFragment>.generate(data: DataSet<Any>, meta: Meta) {
-//        pageBuilders.forEach { (name, builder) ->
-//            data(name, builder(data))
-//        }
-//    }
-//
-//}