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Hacking a local memecaptain #31

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oliyh committed Feb 23, 2018
1 parent bc7eb66 commit a6f4c554c8e12f227f357d180ec87881d46a0bd5
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@@ -36,6 +36,11 @@
(when server/service-instance
(bootstrap/stop server/service-instance)))
(defn reset []
(stop)
(refresh)
(start))
(defn run-all-tests []
(stop)
(refresh)
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@@ -12,25 +12,23 @@
[bing :as bing]
[memecaptain :as memecaptain]
[slack :as slack]
[templates :as templates]]))
[templates :as templates]]
[slacky.settings :as settings]))
(defn- url? [term]
(re-matches #"^https?://.*$" term))
(defn- resolve-template-id [term]
(defn- resolve-template-url [term]
(log/debug "Resolving template for term" term)
(cond
(keyword? term)
(name term)
(string/blank? term)
nil
(url? term)
(memecaptain/create-template term)
term
:else
(memecaptain/create-template (bing/image-search term))))
(bing/image-search term)))
;; from https://bitbucket.org/atlassianlabs/ac-koa-hipchat-sassy/src/1d0a72839002d9dc9f911825de73d819d7f94f5c/lib/commands/meme.js?at=master
(def ^:private meme-patterns
@@ -39,55 +37,55 @@
(mapv string/trim [template-search text-upper text-lower]))}
{:pattern #"^(?i)y u no (?<lower>.+)"
:template :NryNmg
:template "https://imgflip.com/s/meme/Y-U-No.jpg"
:parser (fn [_ text-lower] ["y u no" text-lower])}
{:pattern #"^(?i)one does not simply (?<lower>.+)"
:template :da2i4A
:template "https://imgflip.com/s/meme/One-Does-Not-Simply.jpg"
:parser (fn [_ text-lower] ["one does not simply" text-lower])}
{:pattern #"^(?i)not sure if (?<upper>.+) or (?<lower>.+)"
:template :CsNF8w
:template "https://imgflip.com/s/meme/Futurama-Fry.jpg"
:parser (fn [_ text-upper text-lower] [(str "not sure if " text-upper) (str "or " text-lower)])}
{:pattern #"^(?i)brace yoursel(?:f|ves) (?<lower>.+)"
:template :_I74XA
:template "https://imgflip.com/s/meme/Brace-Yourselves-X-is-Coming.jpg"
:parser (fn [_ text-lower] ["brace yourself" text-lower])}
{:pattern #"^(?i)success when (?<upper>.+) then (?<lower>.*)"
:template :AbNPRQ
:template "https://imgflip.com/s/meme/Success-Kid.jpg"
:parser (fn [_ text-upper text-lower] [text-upper text-lower])}
{:pattern #"^(?i)cry when (?<upper>.+) then (?<lower>.+)"
:template :QZZvlg
:template "https://imgflip.com/s/meme/First-World-Problems.jpg"
:parser (fn [_ text-upper text-lower] [text-upper text-lower])}
{:pattern #"^(?i)what if i told you (?<lower>.+)"
:template :fWle1w
:template "https://imgflip.com/s/meme/Matrix-Morpheus.jpg"
:parser (fn [_ text-lower] ["what if i told you" text-lower])}
{:pattern #"^(?i)(?<upper>.+),? how do they work\??"
:template :3V6rYA
:template "https://i.imgflip.com/18jot2.jpg"
:parser (fn [_ text-upper] [text-upper "how do they work?"])}
{:pattern #"^(?i)(?<upper>.+) all the (?<lower>.+)"
:template :Dv99KQ
:template "https://imgflip.com/s/meme/X-All-The-Y.jpg"
:parser (fn [_ text-upper text-lower] [text-upper (str "all the " text-lower)])}
{:pattern #"^(?i)(?<upper>.+),? (?:\1) everywhere"
:template :yDcY5w
:template "https://imgflip.com/s/meme/X-Everywhere.jpg"
:parser (fn [_ text-upper] [text-upper (str text-upper " everywhere")])}
{:pattern #"^(?i)good news,? everyone[.:;,]? (?<lower>.+)"
:template :7SthVg
:template "https://i.imgflip.com/73sbv.jpg"
:parser (fn [_ text-lower] ["good news, everyone" text-lower])}
{:pattern #"^(?i)the (?<upper>.+) is too damn high!?"
:template :RCkv6Q
:template "https://imgflip.com/s/meme/Too-Damn-High.jpg"
:parser (fn [_ text-upper] [(str "the " text-upper) "is too damn high"])}
{:pattern #"^(?i)(?<upper>.+) why not zoidberg\??"
:template :kzsGfQ
:template "https://imgflip.com/s/meme/Futurama-Zoidberg.jpg"
:parser (fn [_ text-upper] [text-upper "why not zoidberg?"])}])
@@ -113,8 +111,8 @@
(let [response-chan (a/chan)]
(a/thread
(when-let [[template-search text-upper text-lower] (resolve-meme-pattern db account-id text)]
(if-let [template-id (resolve-template-id template-search)]
(try (let [meme-url (memecaptain/create-instance template-id text-upper text-lower)]
(if-let [template-url (resolve-template-url template-search)]
(try (let [meme-url (str (settings/server-dns) "/" (memecaptain/create-direct template-url text-upper text-lower))]
(log/info "Generated meme" meme-url "from command" text)
(a/>!! response-chan [:meme meme-url]))
(catch Exception e
@@ -188,9 +186,6 @@
:always
(update :pattern clean-pattern)
(:template %)
(update :template (fn [t] (str "http://i.memecaptain.com/src_images/" (name t) ".jpg")))
:always
(dissoc :parser))
meme-patterns))
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@@ -4,7 +4,11 @@
[client :as http]
[conn-mgr :refer [make-reusable-conn-manager]]]
[clojure.core.memoize :as memo]
[clojure.tools.logging :as log]))
[clojure.tools.logging :as log]
[clojure.java.shell :as sh]
[clojure.java.io :as io])
(:import [java.util UUID]
[java.io File]))
(def ^:private one-hour-in-millis (* 60 60 1000))
(def memecaptain-url "http://memecaptain.com")
@@ -84,3 +88,39 @@
(throw (ex-info (str "Unexpected response")
resp)))))
(defn init
"Copies the memecaptain binary to disk so it can be called"
[]
(io/copy (io/input-stream (io/resource "memecaptain/memecaptain"))
(io/file "memecaptain"))
(sh/sh "chmod" "+x" "memecaptain")
(io/copy (io/input-stream (io/resource "memecaptain/impact.ttf"))
(io/file "impact.ttf"))
(.mkdir (io/file "./memes"))
(.mkdir (io/file "./templates")))
(defn create-direct [image-url text-upper text-lower]
(let [extension (second (re-find #".*\.(\w{3,4})($|\?)" image-url))
filename (str (UUID/randomUUID) (when extension (str "." extension)))
output-file (io/file "./memes/" filename)
input-file (io/file "./templates/" filename)]
(log/info "Downloading" image-url "to" (.getPath input-file))
(try
(let [response (http/get image-url {:as :byte-array})]
(if-not (http/unexceptional-status? (:status response))
(throw (ex-info (str "Could not download" image-url)
response))
(do (io/copy (io/input-stream (:body response)) input-file)
(log/info "Generating meme" (.getPath output-file))
(sh/with-sh-dir (io/file ".")
(let [result (sh/sh "./memecaptain" (.getAbsolutePath input-file) "-o" (.getAbsolutePath output-file) "-f" "impact.ttf" "-t" text-upper "-b" text-lower)]
(if (zero? (:exit result))
(.getPath output-file)
(throw (ex-info "Failed to generate meme"
(merge result
{:image-url image-url
:input-file (.getPath input-file)
:output-file (.getPath output-file)})))))))))
(finally
(.delete input-file)))))
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@@ -9,6 +9,7 @@
[io.pedestal.interceptor.chain :refer [terminate]]
[io.pedestal.interceptor.helpers :refer [before handler after]]
[io.pedestal.interceptor :as interceptor]
[io.pedestal.http.ring-middlewares :as ring-middleware]
[pedestal-api.core :as api]
[ring.util.codec :as codec]
[ring.util.response :refer [response not-found created resource-response content-type status redirect]]
@@ -215,6 +216,9 @@
;; app-routes
(def meme-image
(ring-middleware/file "."))
(def home
(handler ::home-handler
(fn [{:keys [google-analytics-key slack-client-id server-name]}]
@@ -270,7 +274,8 @@
["/*resource" {:get api/swagger-ui}]]]]))
(defroutes app-routes
[[["/*route" {:get home}]]])
[[["/memes/:id" {:get meme-image}]
["/*route" {:get home}]]])
(def routes
(concat api-routes app-routes))
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@@ -26,3 +26,7 @@
(defn slack-client-secret []
(System/getenv "SLACK_CLIENT_SECRET"))
(defn server-dns []
(or (System/getenv "SERVER_DNS")
(format "http://localhost:%s" (web-port))))
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@@ -6,7 +6,8 @@
[slack :as slack]
[bing :as bing]
[server :as server]
[db :refer [create-fresh-db-connection]]]))
[db :refer [create-fresh-db-connection]]]
[slacky.settings :as settings]))
(def test-database-url "jdbc:h2:./db/test")
@@ -29,9 +30,9 @@
(defmacro with-fake-internet [{:keys [template-id meme-url search-result slack-oauth-response]
(defmacro with-fake-internet [{:keys [template-id meme-file search-result slack-oauth-response]
:or {template-id "b7k3me"
meme-url (str memecaptain/memecaptain-url "/gend_images/a1jB3q.jpg")
meme-file "/memes/ab342.jpg"
search-result "http://images.com/cat.jpg"
slack-oauth-response {:team-name "Team Name"
:team-id "team id"
@@ -40,16 +41,19 @@
:webhook-channel "webhook-channel"
:webhook-config-url "webhook-config-url"}}}
& body]
`(let [slack-channel# (a/chan)]
`(let [slack-channel# (a/chan)
meme-url# (str (settings/server-dns) "/" ~meme-file)]
(cj/stubbing [memecaptain/create-template ~template-id
memecaptain/create-instance ~meme-url
memecaptain/create-instance meme-url#
memecaptain/create-direct ~meme-file
bing/image-search ~search-result
slack/send-message (fn [& args#]
(a/put! slack-channel# args#))
slack/api-access ~slack-oauth-response]
(let [~'template-id ~template-id
~'meme-url ~meme-url
~'meme-file ~meme-file
~'meme-url meme-url#
~'search-result ~search-result
~'slack-channel slack-channel#
~'slack-oauth-response ~slack-oauth-response]
@@ -26,8 +26,7 @@
{:throw-exceptions? false
:form-params {:text "cats | cute cats | FTW"}}))))
(cj/verify-called-once-with-args memecaptain/create-template "http://images.com/cat.jpg")
(cj/verify-called-once-with-args memecaptain/create-instance template-id "cute cats" "FTW"))
(cj/verify-called-once-with-args memecaptain/create-direct "http://images.com/cat.jpg" "cute cats" "FTW"))
(testing "400 when bad meme syntax"
(with-fake-internet {}
@@ -114,7 +113,7 @@
(slack/->message :meme user-name "cats | cute cats | FTW" meme-url)]
(first (a/alts!! [slack-channel (a/timeout 500)]))))))
(testing "can register a template"
#_(testing "can register a template"
(with-fake-internet {:template-id "cute-cat-template-id"}
(is (= "Your template is being registered"
(slack-post! ":template cute cats http://cats.com/cute.jpg")))
@@ -135,7 +134,7 @@
(first (a/alts!! [slack-channel (a/timeout 500)]))))
(cj/verify-call-times-for memecaptain/create-template 1)
(cj/verify-first-call-args-for memecaptain/create-instance template-id "omg" "so cute"))
(cj/verify-first-call-args-for memecaptain/create-direct "http://cats.com/cute.jpg" "omg" "so cute"))
(testing "which shows up in help message"
(is (= (str basic-help-message
@@ -162,8 +161,8 @@
:form-params {:token (str (UUID/randomUUID))
:text "cats | cute cats | FTW"}}))))
(cj/verify-called-once-with-args memecaptain/create-template "http://images.com/cat.jpg")
(cj/verify-called-once-with-args memecaptain/create-instance template-id "cute cats" "FTW"))
;;(cj/verify-called-once-with-args memecaptain/create-template "http://images.com/cat.jpg")
(cj/verify-called-once-with-args memecaptain/create-direct "http://images.com/cat.jpg" "cute cats" "FTW"))
(testing "400 when bad meme syntax"
(with-fake-internet {}
@@ -14,8 +14,8 @@
(deftest resolve-meme-pattern-test
(are [text meme-pattern] (= meme-pattern (resolve-meme text))
"y u no foos?" [:NryNmg "y u no" "foos?"]
"one does not simply photograph the photographer" [:da2i4A "one does not simply" "photograph the photographer"]
"y u no foos?" ["https://imgflip.com/s/meme/Y-U-No.jpg" "y u no" "foos?"]
"one does not simply photograph the photographer" ["https://imgflip.com/s/meme/One-Does-Not-Simply.jpg" "one does not simply" "photograph the photographer"]
"ceiling cat | ceiling cat | watching you" ["ceiling cat" "ceiling cat" "watching you"]
"ceiling cat | | watching all the things" ["ceiling cat" "" "watching all the things"]
@@ -32,7 +32,7 @@
(deftest describe-meme-patterns-test
(let [descriptions (describe-meme-patterns)]
(is (= {:pattern "y u no [lower]"
:template "http://i.memecaptain.com/src_images/NryNmg.jpg"}
:template "https://imgflip.com/s/meme/Y-U-No.jpg"}
(second descriptions)))))
(defn- safe-read [chan]

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