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(ns queue-api.db.core
(:require [datascript.core :as d]
[mount.core :as mount]
[clj-time.core :as time]))
(def schema {:agent/id {:db/unique :db.unique/identity}
:agent/primary-skillset {:db/cardinality :db.cardinality/many}
:agent/secondary-skillset {:db/cardinality :db.cardinality/many}
:agent/job {:db.valueType :db.type/ref}
:job/id {:db/unique :db.unique/identity}
:job/agent {:db.valueType :db.type/ref}})
(mount/defstate conn
:start (d/create-conn schema))
(defn add-agent [{:keys [id name primary-skillset secondary-skillset]}]
(d/transact! queue-api.db.core/conn [{:agent/id id
:agent/name name
:agent/primary-skillset primary-skillset
:agent/secondary-skillset secondary-skillset}]))
(defn add-job [{:keys [id type urgent]}]
(d/transact! queue-api.db.core/conn [{:job/id id
:job/type type
:job/urgent urgent
:job/date (time/now)
:job/status :unassigned}]))
(defn request-job [id]
{:job_request {:job_id "Dummy" :agent_id "Dummy"}})
(defn get-agent [id]
[{:type "Dummy"
:jobs -2}])
(defn agent-jobs [id s]
(let [q (d/q '[:find ?jid
:in $ ?id ?s
:where
[?e :agent/id ?id]
[?x :job/id ?jid]
[?x :job/status ?s]
[?x :job/agent ?e]]
@conn id s)]
(map #(d/entity @conn [:job/id (first %)]) q)))
(defn q-job [u s t]
(let [q (->> (d/q '[:find ?d ?id
:in $ ?u ?s ?t
:where
[?e :job/date ?d]
[?e :job/id ?id]
[?e :job/urgent ?u]
[?e :job/status ?s]
[?e :job/type ?t]]
@conn u s t)
(sort-by first))]
(map #(d/entity @conn [:job/id (last %)]) q)))
(defn q-status [s]
(d/q '[:find ?id :in $ ?status
:where
[?e :job/status ?status]
[?e :job/id ?id]]
@conn s))
(defn sum-queue []
{:completed (map #(first %) (q-status :completed))
:processing (map #(first %) (q-status :processing))
:unassigned (map #(first %) (q-status :unassigned))})
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