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getInstitute.go
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/
getInstitute.go
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package main
import (
"encoding/json"
"io"
"log"
"net/http"
"net/url"
"os"
"regexp"
"sort"
"strings"
"sync"
"time"
"github.com/samber/lo"
)
func getInstitutePapers(mtid string, paperchan chan []Paper) {
base, err := url.Parse("https://m2.mtmt.hu/api/publication")
if err != nil {
return
}
// Query params
params := url.Values{}
params.Add("cond", "institutes;inia;"+mtid)
params.Add("cond", "published;eq;true")
params.Add("cond", "core;eq;true")
params.Add("cond", "category.mtid;eq;1")
params.Add("cond", "type.mtid;eq;24")
params.Add("cond", "languages.label;eq;Angol")
params.Add("sort", "publishedYear,desc")
params.Add("sort", "firstAuthor,asc")
params.Add("size", "10000")
params.Add("size", "10000")
params.Add("fields", "template")
params.Add("labelLang", "hun")
params.Add("cite_type", "2")
params.Add("page", "1")
params.Add("format", "json")
base.RawQuery = params.Encode()
resp, err := http.Get(base.String())
if err != nil {
return
}
body, err := io.ReadAll(resp.Body)
if err != nil {
return
}
mtmtResponse := MtmtResponse{}
err = json.Unmarshal([]byte(body), &mtmtResponse)
papers := getPapers(mtmtResponse, "-1")
paperchan <- papers
return
}
func getUnique(papers []Paper) []Paper {
idmap := make(map[int]Paper)
for _, paper := range papers {
idmap[paper.Mtid] = paper
}
return lo.Values[int, Paper](idmap)
}
func getInstitutes(mtids []string) (PaperResponse, error) {
var papers []Paper
var wg sync.WaitGroup
paperchan := make(chan []Paper)
responsechan := make(chan PaperResponse)
for _, id := range mtids {
wg.Add(1)
go func(id string) {
defer wg.Done()
getInstitutePapers(id, paperchan)
}(id)
}
go func(responsechan chan PaperResponse) {
for inst_papers := range paperchan {
papers = append(papers, inst_papers...)
}
papers = getUnique(papers)
papers = getJournals(papers)
retval := PaperResponse{Papers: papers, Time: time.Now().Unix()}
responsechan <- retval
}(responsechan)
wg.Wait()
close(paperchan)
return <-responsechan, nil
}
func handleGetInstitute(w http.ResponseWriter, r *http.Request) {
mtid := r.URL.Query()["mtid"]
isgoodparam := true
for _, id := range mtid {
regres, _ := regexp.MatchString(`^\d+$`, id)
if !regres {
isgoodparam = false
}
}
if len(mtid) == 0 {
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte("400 - no MTID given"))
} else if !isgoodparam {
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte("400 - not an mtid"))
} else {
sort.Strings(mtid)
mtidstring := strings.Join(mtid, "_")
log.Printf("/insitute %s\n", mtidstring)
filename := "institutes_" + mtidstring + ".json"
info, fileerr := os.Stat(filename)
var jsonresp []byte
if fileerr != nil || time.Now().Unix()-info.ModTime().Unix() >= CACHETIME {
response, err := getInstitutes(mtid)
if err != nil {
if fileerr == nil {
jsonresp, _ = os.ReadFile(filename)
w.Write(jsonresp)
} else {
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte("500 - MTMT is probably not available and no fallback exists"))
}
} else {
jsonresp, _ = json.Marshal(response)
w.Write(jsonresp)
_ = os.WriteFile(filename, jsonresp, 0644)
}
} else {
jsonresp, _ = os.ReadFile(filename)
w.Write(jsonresp)
}
}
}