/
firestore.clj
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/
firestore.clj
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(ns charmander.firestore
(:require [clojure.java.io :as io])
(:import com.google.auth.oauth2.GoogleCredentials
com.google.firebase.FirebaseApp
com.google.firebase.FirebaseOptions
com.google.firebase.FirebaseOptions$Builder
com.google.firebase.auth.FirebaseAuth
com.google.firebase.auth.FirebaseAuthException
com.google.firebase.auth.UserRecord
com.google.firebase.auth.UserRecord$CreateRequest
com.google.firebase.auth.UserRecord$UpdateRequest
;firestore
com.google.firebase.cloud.FirestoreClient
com.google.cloud.firestore.Firestore
com.google.cloud.firestore.QueryDocumentSnapshot
com.google.cloud.firestore.QuerySnapshot
com.google.cloud.firestore.DocumentReference
com.google.cloud.firestore.DocumentSnapshot
com.google.cloud.firestore.WriteResult
com.google.api.core.ApiFuture
com.google.cloud.firestore.CollectionReference)
(:gen-class))
(defn- keywordize-keys
"Recursively transforms all map keys from strings to keywords."
[m]
(let [f (fn [[k v]] (if (string? k) [(keyword k) v] [k v]))]
(clojure.walk/postwalk (fn [x] (if (map? x) (into {} (map f x)) x)) m)))
(defn- stringify-keys
"Recursively transforms all map keys from keywords to strings."
[m]
(let [f (fn [[k v]] (if (keyword? k) [(name k) v] [k v]))]
(clojure.walk/postwalk (fn [x] (if (map? x) (into {} (map f x)) x)) m)))
;(def firestore (atom nil))
; private methods
(defn- build-firebase-options [key-file-json database-name]
(-> (new FirebaseOptions$Builder) ;use thread-first when the final part of the function will return value to be used
(.setCredentials (GoogleCredentials/fromStream (io/input-stream key-file-json)))
(.setDatabaseUrl (str "https://" database-name ".firebaseio.com"))
(.build)))
(defn- snapshot-to-map [snapshot]
(keywordize-keys (into {} (. snapshot getData))))
(defn- process-document [reff]
(let [futuristic (cast ApiFuture (. reff get))]
(let [query-snapshot (. futuristic get)]
(. query-snapshot getDocuments))))
(defn- process-document-subcollection [firestore-collection]
(let [collection-list (. firestore-collection getCollections)]
(for [x collection-list]
(assoc {}
:id (. x getId)
:path (. x getPath)
:data (for [y (process-document x)]
(assoc {}
:id (. y getId)
:data (snapshot-to-map y)))))))
(defn- list-document-subcollection [firestore-collection]
(let [collection-list (. firestore-collection getCollections)]
(for [x collection-list]
(assoc {}
:id (. x getId)
:path (. x getPath)))))
(defn- resolve-write-future [api-future]
(do
(. api-future get)
true))
; public methods
; firestore api
(defn get-document [collection document]
(let [firestore (FirestoreClient/getFirestore)]
(let [reff (cast DocumentReference (-> firestore (.collection collection) (.document document)))]
(let [futuristic (cast ApiFuture (. reff get))]
(let [document-snapshot (cast DocumentSnapshot (. futuristic get))]
(if (. document-snapshot exists)
(let [object (snapshot-to-map document-snapshot)]
(assoc {}
:id (. document-snapshot getId)
:data (assoc object :subcollections (list-document-subcollection reff))))
nil))))))
(defn get-document-and-subcollections [collection document]
(let [firestore (FirestoreClient/getFirestore)]
(let [reff (cast DocumentReference (-> firestore (.collection collection) (.document document)))]
(let [futuristic (cast ApiFuture (. reff get))]
(let [document-snapshot (cast DocumentSnapshot (. futuristic get))]
(if (. document-snapshot exists)
(let [object (snapshot-to-map document-snapshot)]
(assoc {}
:id (. document-snapshot getId)
:data (assoc object :subcollections (process-document-subcollection reff))))
nil))))))
(defn get-collection [collection]
(let [firestore (FirestoreClient/getFirestore)]
(let [reff (cast CollectionReference (-> firestore (.collection collection)))]
(let [futuristic (cast ApiFuture (. reff get))]
(let [firestore-collection (. futuristic get)]
(let [collection-list (. firestore-collection getDocuments)]
(for [x collection-list]
(assoc {}
:id (. x getId)
:data (snapshot-to-map x)) )))))))
(defn- query [collection-reference args]
(let [property (:where args)]
(cond
(some? (:equals args)) ;==
(-> collection-reference (.whereEqualTo property (:equals args)))
(some? (:equal-to args)) ;==
(-> collection-reference (.whereEqualTo property (:equal-to args)))
(some? (:less-than args)) ;<
(-> collection-reference (.whereLessThan property (:less-than args)))
(some? (:greater-than args)) ;>
(-> collection-reference (.whereGreaterThan property (:greater-than args)))
(some? (:less-than-or-equal-to args)) ;<=
(-> collection-reference (.whereLessThanOrEqualTo property (:less-than-or-equal-to args)))
(some? (:greater-than-or-equal-to args)) ;>=
(-> collection-reference (.whereGreaterThanOrEqualTo property (:greater-than-or-equal-to args)))
(and (some? (:between args)) (= (count (:between args)) 2)) ;a < x < b
(let [lower (first (:between args)) upper (second (:between args))]
(cond
(true? (:include-upper args)) (-> collection-reference (.whereGreaterThan property lower) (.whereLessThanOrEqualTo property upper))
(true? (:include-lower args)) (-> collection-reference (.whereGreaterThanOrEqualTo property lower) (.whereLessThan property upper))
:else (-> collection-reference (.whereGreaterThan property lower) (.whereLessThan property upper))))
(and (some? (:from args)) (= (count (:from args)) 2) ) ;a <= x <= b
(let [lower (first (:from args)) upper (second (:from args))]
(-> collection-reference (.whereGreaterThanOrEqualTo property lower) (.whereLessThanOrEqualTo property upper)))
(some? (:contains args))
(-> collection-reference (.whereArrayContains property (:contains args))))))
(defn query-collection [collection & args]
(let [arguments (apply hash-map args)]
(if (empty? (:where arguments))
(get-collection collection)
(let [firestore (FirestoreClient/getFirestore)]
(let [collref (cast CollectionReference (-> firestore (.collection collection)))]
(let [reff (query collref arguments)]
(let [futuristic (cast ApiFuture (. reff get))]
(let [firestore-collection (. futuristic get)]
(let [collection-list (. firestore-collection getDocuments)]
(for [x collection-list]
(assoc {}
:id (. x getId)
:data (snapshot-to-map x)) ))))))))))
(defn add-document-to-collection [collection data]
(let [firestore (FirestoreClient/getFirestore)]
(let [reff (cast CollectionReference (-> firestore (.collection collection)))]
(resolve-write-future (-> reff (.add (stringify-keys data)))))))
(defn create-document [collection name data]
(let [firestore (FirestoreClient/getFirestore)]
(let [reff (cast DocumentReference (-> firestore (.collection collection) (.document name) ))]
(resolve-write-future (-> reff (.create (stringify-keys data)))))))
(defn add-document-to-subcollection [collection document name data]
(let [firestore (FirestoreClient/getFirestore)]
(let [reff (cast CollectionReference (-> firestore (.collection collection) (.document document) (.collection name)))]
(resolve-write-future (-> reff (.add (stringify-keys data)))))))
(defn set-document [collection name data]
(let [firestore (FirestoreClient/getFirestore)]
(let [reff (cast DocumentReference (-> firestore (.collection collection) (.document name) ))]
(resolve-write-future (-> reff (.set (stringify-keys data)))))))
(defn update-document [collection name data]
(let [firestore (FirestoreClient/getFirestore)]
(let [reff (cast DocumentReference (-> firestore (.collection collection) (.document name) ))]
(resolve-write-future (-> reff (.update (stringify-keys data)))))))
(defn delete-document [collection name]
(let [firestore (FirestoreClient/getFirestore)]
(let [reff (cast DocumentReference (-> firestore (.collection collection) (.document name) ))]
(resolve-write-future (-> reff (.delete))))))