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follow.clj
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follow.clj
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(ns oc.lib.change.resources.follow
(:require [taoensso.faraday :as far]
[schema.core :as schema]
[oc.lib.schema :as lib-schema]
[oc.lib.slugify :as slug]
[clojure.set :as clj-set]))
(defn table-name [db-opts]
(keyword (str (:table-prefix db-opts) "_follow")))
(defn org-slug-gsi-name [db-opts]
(str (:table-prefix db-opts) "_follow_gsi_org_slug"))
(defn publisher-follower-table-name [db-opts]
(keyword (str (:table-prefix db-opts) "_publisher_follower")))
(defn org-slug-publisher-followers-gsi-name [db-opts]
(keyword (str (:table-prefix db-opts) "_publisher_follower_gsi_org_slug")))
(defn board-unfollower-table-name [db-opts]
(keyword (str (:table-prefix db-opts) "_board_unfollower")))
(defn org-slug-board-unfollowers-gsi-name [db-opts]
(keyword (str (:table-prefix db-opts) "_board_unfollower_gsi_org_slug")))
(def Slug (schema/pred slug/valid-slug?))
(def ResourceType (schema/enum :user :board))
(schema/defn ^:always-validate retrieve
:- {:user-id lib-schema/UniqueID :org-slug Slug :follow-publisher-uuids (schema/maybe [lib-schema/UniqueID]) :unfollow-board-uuids (schema/maybe [lib-schema/UniqueID])}
[dynamodb-opts user-id :- lib-schema/UniqueID org-slug :- Slug]
(if-let [user-item (far/get-item dynamodb-opts (table-name dynamodb-opts) {:user_id user-id
:org_slug org-slug})]
(clj-set/rename-keys user-item {:user_id :user-id
:org_slug :org-slug
:follow_publisher_uuids :follow-publisher-uuids
:unfollow_board_uuids :unfollow-board-uuids})
{:user-id user-id :org-slug org-slug :follow-publisher-uuids nil :unfollow-board-uuids nil}))
(schema/defn ^:always-validate retrieve-all
:- [{:user-id lib-schema/UniqueID :org-slug Slug :follow-publisher-uuids (schema/maybe [lib-schema/UniqueID]) :unfollow-board-uuids (schema/maybe [lib-schema/UniqueID])}]
[dynamodb-opts org-slug :- Slug]
(map #(clj-set/rename-keys % {:user_id :user-id
:org_slug :org-slug
:follow_publisher_uuids :follow-publisher-uuids
:unfollow_board_uuids :unfollow-board-uuids})
(far/query dynamodb-opts (table-name dynamodb-opts) {:org_slug [:eq org-slug]} {:index (org-slug-gsi-name dynamodb-opts)})))
(schema/defn ^:always-validate retrieve-publisher-followers
:- {:publisher-uuid lib-schema/UniqueID :org-slug Slug :follower-uuids (schema/maybe [lib-schema/UniqueID])}
[dynamodb-opts org-slug :- Slug publisher-uuid :- lib-schema/UniqueID]
(if-let [item (far/get-item dynamodb-opts (publisher-follower-table-name dynamodb-opts) {:publisher_uuid publisher-uuid
:org_slug org-slug})]
(clojure.set/rename-keys item {:publisher_uuid :publisher-uuid :org_slug :org-slug :follower_uuids :follower-uuids})
{:publisher-uuid publisher-uuid :org-slug org-slug :follower-uuids nil}))
(schema/defn ^:always-validate retrieve-board-unfollowers
:- {:board-uuid lib-schema/UniqueID :org-slug Slug :unfollower-uuids (schema/maybe [lib-schema/UniqueID])}
[dynamodb-opts org-slug :- Slug board-uuid :- lib-schema/UniqueID]
(if-let [item (far/get-item dynamodb-opts (board-unfollower-table-name dynamodb-opts) {:board_uuid board-uuid
:org_slug org-slug})]
(clojure.set/rename-keys item {:board_uuid :board-uuid :org_slug :org-slug :unfollower_uuids :unfollower-uuids})
{:board-uuid board-uuid :org-slug org-slug :unfollower-uuids nil}))
(schema/defn ^:always-validate retrieve-all-publisher-followers
:- [{:org-slug Slug :follower-uuids [lib-schema/UniqueID] :publisher-uuid lib-schema/UniqueID :resource-type ResourceType}]
[dynamodb-opts org-slug :- Slug]
(let [followers (far/query dynamodb-opts (publisher-follower-table-name dynamodb-opts) {:org_slug [:eq org-slug]} {:index (org-slug-publisher-followers-gsi-name dynamodb-opts)})]
(mapv #(-> %
(clojure.set/rename-keys {:org_slug :org-slug
:publisher_uuid :publisher-uuid
:follower_uuids :follower-uuids})
(assoc :resource-type :user))
followers)))
(schema/defn ^:always-validate retrieve-all-board-unfollowers
:- [{:org-slug Slug :unfollower-uuids [lib-schema/UniqueID] :board-uuid lib-schema/UniqueID :resource-type ResourceType}]
[dynamodb-opts org-slug :- Slug]
(let [followers (far/query dynamodb-opts (board-unfollower-table-name dynamodb-opts)
{:org_slug [:eq org-slug]}
{:index (org-slug-board-unfollowers-gsi-name dynamodb-opts)})]
(mapv #(-> %
(clojure.set/rename-keys {:org_slug :org-slug
:board_uuid :board-uuid
:unfollower_uuids :unfollower-uuids})
(assoc :resource-type :board))
followers)))
(schema/defn ^:always-validate delete!
[dynamodb-opts user-id :- lib-schema/UniqueID org-slug :- Slug]
(far/delete-item dynamodb-opts (table-name dynamodb-opts) {:user_id user-id
:org_slug org-slug})
(let [publisher-followers (->> (far/query dynamodb-opts (publisher-follower-table-name dynamodb-opts)
{:org_slug [:eq org-slug]}
{:index (org-slug-publisher-followers-gsi-name dynamodb-opts)
:filter-expr "contains(#k, :v)"
:expr-attr-names {"#k" "follower_uuids"}
:expr-attr-vals {":v" user-id}})
(map #(clojure.set/rename-keys % {:publisher_uuid :publisher-uuid :org_slug :org-slug :follower_uuids :follower-uuids})))]
(doseq [follower publisher-followers
:let [next-followers (vec (disj (set (:follower-uuids follower)) user-id))]]
(far/put-item dynamodb-opts (publisher-follower-table-name dynamodb-opts)
{:publisher_uuid (:publisher-uuid follower)
:org_slug (:org-slug follower)
:follower_uuids next-followers})))
(let [board-unfollowers (->> (far/query dynamodb-opts (board-unfollower-table-name dynamodb-opts)
{:org_slug [:eq org-slug]}
{:index (org-slug-board-unfollowers-gsi-name dynamodb-opts)
:filter-expr "contains(#k, :v)"
:expr-attr-names {"#k" "unfollower_uuids"}
:expr-attr-vals {":v" user-id}})
(map #(clojure.set/rename-keys % {:board_uuid :board-uuid :org_slug :org-slug :unfollower_uuids :unfollower-uuids})))]
(doseq [unfollower board-unfollowers
:let [next-unfollowers (vec (disj (set (:unfollower-uuids unfollower)) user-id))]]
(far/put-item dynamodb-opts (board-unfollower-table-name dynamodb-opts)
{:board_uuid (:board-uuid unfollower)
:org_slug (:org-slug unfollower)
:unfollower_uuids next-unfollowers})))
true)
(schema/defn ^:always-validate delete-by-org!
[dynamodb-opts org-slug :- Slug]
(doseq [item (far/query dynamodb-opts (table-name dynamodb-opts)
{:org_slug [:eq org-slug]} {:index (org-slug-gsi-name dynamodb-opts)})]
(delete! dynamodb-opts (:user_id item) org-slug))
(doseq [item (far/query dynamodb-opts (publisher-follower-table-name dynamodb-opts)
{:org_slug [:eq org-slug]} {:index (org-slug-publisher-followers-gsi-name dynamodb-opts)})]
(delete! dynamodb-opts (:publisher_uuid item) org-slug))
(doseq [item (far/query dynamodb-opts (board-unfollower-table-name dynamodb-opts)
{:org_slug [:eq org-slug]} {:index (org-slug-board-unfollowers-gsi-name dynamodb-opts)})]
(delete! dynamodb-opts (:board_uuid item) org-slug))
(far/delete-item dynamodb-opts (table-name dynamodb-opts) {:org_slug [:eq org-slug]})
true)
(schema/defn ^:always-validate store!
[dynamodb-opts user-id :- lib-schema/UniqueID org-slug :- Slug follow-publisher-uuids :- [lib-schema/UniqueID] unfollow-board-uuids :- [lib-schema/UniqueID]]
(let [prev-item (retrieve dynamodb-opts user-id org-slug)
losing-follow-publisher-uuids (clojure.set/difference (set (:follow-publisher-uuids prev-item)) (set follow-publisher-uuids))
losing-unfollow-board-uuids (clojure.set/difference (set (:unfollow-board-uuids prev-item)) (set unfollow-board-uuids))]
(far/put-item dynamodb-opts (table-name dynamodb-opts) {
:user_id user-id
:org_slug org-slug
:follow_publisher_uuids (or follow-publisher-uuids [])
:unfollow_board_uuids (or unfollow-board-uuids [])})
(doseq [u follow-publisher-uuids]
(let [follower-item (retrieve-publisher-followers dynamodb-opts org-slug u)
next-followers (vec (conj (set (:follower-uuids follower-item)) user-id))]
(far/put-item dynamodb-opts (publisher-follower-table-name dynamodb-opts) {:publisher_uuid u
:org_slug org-slug
:follower_uuids next-followers})))
(doseq [u losing-follow-publisher-uuids]
(let [follower-item (retrieve-publisher-followers dynamodb-opts org-slug u)
next-followers (vec (disj (set (:follower-uuids follower-item)) user-id))]
(far/put-item dynamodb-opts (publisher-follower-table-name dynamodb-opts) {:publisher_uuid u
:org_slug org-slug
:follower_uuids next-followers})))
(doseq [b unfollow-board-uuids]
(let [follower-item (retrieve-board-unfollowers dynamodb-opts org-slug b)
next-followers (vec (conj (set (:unfollower-uuids follower-item)) user-id))]
(far/put-item dynamodb-opts (board-unfollower-table-name dynamodb-opts) {:board_uuid b
:org_slug org-slug
:unfollower_uuids next-followers})))
(doseq [b losing-unfollow-board-uuids]
(let [follower-item (retrieve-board-unfollowers dynamodb-opts org-slug b)
next-followers (vec (disj (set (:unfollower-uuids follower-item)) user-id))]
(far/put-item dynamodb-opts (board-unfollower-table-name dynamodb-opts) {:board_uuid b
:org_slug org-slug
:unfollower_uuids next-followers})))
true))
(schema/defn ^:always-validate store-publishers!
[dynamodb-opts user-id :- lib-schema/UniqueID org-slug :- Slug follow-publisher-uuids :- [lib-schema/UniqueID]]
(let [item (retrieve dynamodb-opts user-id org-slug)]
(store! dynamodb-opts user-id org-slug (vec (set follow-publisher-uuids)) (or (:unfollow-board-uuids item) [])))
true)
(schema/defn ^:always-validate store-boards!
[dynamodb-opts user-id :- lib-schema/UniqueID org-slug :- Slug unfollow-board-uuids :- [lib-schema/UniqueID]]
(let [item (retrieve dynamodb-opts user-id org-slug)]
(store! dynamodb-opts user-id org-slug (or (:follow-publisher-uuids item) []) (vec (set unfollow-board-uuids))))
true)
(schema/defn ^:always-validate follow-publisher!
[dynamodb-opts user-id :- lib-schema/UniqueID org-slug :- Slug follow-publisher-uuid :- lib-schema/UniqueID]
(let [item (retrieve dynamodb-opts user-id org-slug)
next-follow-publisher-uuids (if (seq (:follow-publisher-uuids item))
(vec (clojure.set/union (set (:follow-publisher-uuids item)) #{follow-publisher-uuid}))
[follow-publisher-uuid])]
(store! dynamodb-opts user-id org-slug next-follow-publisher-uuids (or (:unfollow-board-uuids item) [])))
true)
(schema/defn ^:always-validate follow-board!
[dynamodb-opts user-id :- lib-schema/UniqueID org-slug :- Slug board-uuid :- lib-schema/UniqueID]
(let [item (retrieve dynamodb-opts user-id org-slug)
next-unfollow-board-uuids (if (seq (:unfollow-board-uuids item))
(vec (clojure.set/difference (set (:unfollow-board-uuids item)) #{board-uuid}))
[])]
(store! dynamodb-opts user-id org-slug (or (:follow-publisher-uuids item) []) next-unfollow-board-uuids))
true)
(schema/defn ^:always-validate unfollow-publisher!
[dynamodb-opts user-id :- lib-schema/UniqueID org-slug :- Slug unfollow-publisher-uuid :- lib-schema/UniqueID]
(let [item (retrieve dynamodb-opts user-id org-slug)
next-follow-publisher-uuids (if (seq (:follow-publisher-uuids item))
(vec (clojure.set/difference (set (:follow-publisher-uuids item)) #{unfollow-publisher-uuid}))
[])]
(store! dynamodb-opts user-id org-slug next-follow-publisher-uuids (or (:unfollow-board-uuids item) [])))
true)
(schema/defn ^:always-validate unfollow-board!
[dynamodb-opts user-id :- lib-schema/UniqueID org-slug :- Slug board-uuid :- lib-schema/UniqueID]
(let [item (retrieve dynamodb-opts user-id org-slug)
next-unfollow-board-uuids (if (seq (:unfollow-board-uuids item))
(vec (clojure.set/union (set (:unfollow-board-uuids item)) #{board-uuid}))
[board-uuid])]
(store! dynamodb-opts user-id org-slug (or (:follow-publisher-uuids item) []) next-unfollow-board-uuids))
true)
(comment
"Example data:
Following:
[{:user_id 1111-1111-1111
:org_slug carrot
:follow_publisher_uuids [2222-2222-2222 3333-3333-3333]
:unfollow_board_uuids [aaaa-aaaa-aaaa bbbb-bbbb-bbbb]}
{:user_id 2222-2222-2222
:org_slug carrot
:follow_publisher_uuids [3333-3333-3333 4444-4444-4444]
:unfollow_board_uuids [bbbb-bbbb-bbbb cccc-cccc-cccc]}]
Publisher followers
[{:follow_publisher_uuid 3333-3333-3333
:org_slug carrot
:follower_uuids [1111-1111-1111 2222-2222-2222]}]
Board unfollowers
[{:unfollow_board_uuid bbbb-bbbb-bbbb
:org_slug carrot
:follower_uuids [1111-1111-1111 2222-2222-2222]}]
"
(require '[oc.lib.change.resources.follow :as follow] :reload)
(far/list-tables dynamodb-opts)
(far/delete-table dynamodb-opts (follow/table-name dynamodb-opts))
(aprint
(far/create-table dynamodb-opts
(follow/table-name dynamodb-opts)
[:user_id :s]
{:range-keydef [:org_slug :s]
:billing-mode :pay-per-request
:block? true}))
(aprint
@(far/update-table dynamodb-opts
(follow/table-name dynamodb-opts)
{:gsindexes {:operation :create
:name (follow/org-slug-gsi-name dynamodb-opts)
:billing-mode :pay-per-request
:hash-keydef [:org_slug :s]
:range-keydef [:user_id :s]
:projection :keys-only}}))
;; Publisher followers
(far/delete-table dynamodb-opts (follow/publisher-follower-table-name dynamodb-opts))
(aprint
(far/create-table dynamodb-opts
(follow/publisher-follower-table-name dynamodb-opts)
[:follow_publisher_uuid :s]
{:range-keydef [:org_slug :s]
:billing-mode :pay-per-request
:block? true}))
;; Board followers
(far/delete-table dynamodb-opts (follow/board-unfollower-table-name dynamodb-opts))
(aprint
(far/create-table dynamodb-opts
(follow/board-unfollower-table-name dynamodb-opts)
[:unfollow_board_uuid :s]
{:range-keydef [:org_slug :s]
:billing-mode :pay-per-request
:block? true}))
(aprint (far/describe-table dynamodb-opts (follow/table-name dynamodb-opts)))
(follow/store! dynamodb-opts "1111-1111-1111" "aaaa-aaaa-aaaa" ["3333-3333-3333"] ["2222-2222-2222"])
(follow/follow! dynamodb-opts "1111-1111-1111" "aaaa-aaaa-aaaa" "4444-4444-4444")
(follow/unfollow! dynamodb-opts "1111-1111-1111" "aaaa-aaaa-aaaa" "2222-2222-2222")
(follow/retrieve dynamodb-opts "1111-1111-1111" "aaaa-aaaa-aaaa")
(follow/retrieve-all dynamodb-opts "aaaa-aaaa-aaaa")
(follow/delete! dynamodb-opts "1111-1111-1111" "aaaa-aaaa-aaaa")
(follow/delete-by-org! dynamodb-opts "aaaa-aaaa-aaaa"))