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WIP: Scrape README from GitHub if the source is provided #292

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phase wants to merge 3 commits into from
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WIP: Scrape README from GitHub if the source is provided #292

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19f0a8b
Scrape README from GitHub if the source is provided
phase Oct 31, 2017
7f88905
Merge branch 'master' into issue-87
phase Mar 14, 2018
37f6cd6
Support any GitHub README when scraping
phase Mar 14, 2018
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14 changes: 13 additions & 1 deletion app/models/project/Project.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ import ore.{Joinable, OreConfig, Visitable}
import play.api.libs.json._
import play.api.libs.functional.syntax._
import play.twirl.api.Html
import _root_.util.GitHubUtil
import _root_.util.StringUtils
import _root_.util.StringUtils._
import models.project.VisibilityTypes.{Public, Visibility}
Expand Down Expand Up @@ -464,7 +465,18 @@ case class Project(override val id: Option[Int] = None,
* @return Project home page
*/
def homePage: Page = Defined {
val page = new Page(this.id.get, Page.HomeName, Page.Template(this.name, Page.HomeMessage), false, -1)
var body = Page.HomeMessage
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@kashike kashike Oct 31, 2017

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This should only do it if one is not manually provided, yes? If that is not the behaviour with this PR, it should be.

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@phase phase Oct 31, 2017

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I'm not quite sure what you're saying. This scrapes the README if a source URL is provided, and if it is from GitHub.

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@kashike kashike Oct 31, 2017

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I'm asking if this will overwrite an existing manually-created README.

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@phase phase Oct 31, 2017 •
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When a Project is created, it creates a Home Page that has Page.HomeMessage in it. Lines 448 - 451 retrieve the Page from database, passing the page variable as a default. This changes the default to the README it scraped from GitHub. It's basically replacing the text from Page.HomeMessage with the README. So no, it will not replace the Home Page after it has been edited.

val source = this.settings.source
if (source.isDefined && GitHubUtil.isGitHubUrl(source.get)) {
val urlParts = source.get.split("//github.com/")(1).split("/")
val ghUser = urlParts(0)
val ghProject = urlParts(1)
val readme = GitHubUtil.getReadme(ghUser, ghProject)
if (readme != null && readme.isDefined) {
body = readme.get
}
}
val page = new Page(this.id.get, Page.HomeName, Page.Template(this.name, body), false, -1)
this.service.await(page.schema.getOrInsert(page)).get
}

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28 changes: 28 additions & 0 deletions app/util/GitHubUtil.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
package util

import java.io.FileNotFoundException

import play.api.libs.json.{JsValue, Json}

import scala.io.Source

object GitHubUtil {

private val identifier = "A-Za-z0-9-_"
private val gitHubUrlPattern = s"""http(s)?://github.com/[$identifier]+/[$identifier]+(/)?""".r.pattern
private val readmeApi = "https://api.github.com/repos/%s/%s/readme"

def isGitHubUrl(url: String): Boolean = gitHubUrlPattern.matcher(url).matches()

def getReadme(user: String, project: String): Option[String] = {
try {
val readmeApiJson: JsValue = Json.parse(Source.fromURL(readmeApi.format(user, project)).mkString)
val url = (readmeApiJson \ "download_url").get.toString()
val readme = Source.fromURL(url).mkString
Some(readme)
} catch {
case _: FileNotFoundException => None
}
}

}