Switch from open library API to Inventaire API

internal/inventaire/inventairebook.go

@@ -0,0 +1,102 @@
+package inventaire
+
+import (
+	"encoding/json"
+	"errors"
+
+	"git.artlef.fr/PersonalLibraryManager/internal/callapiutils"
+)
+
+type InventaireBookResult struct {
+	ID          string
+	Lang        string
+	Title       string
+	Description string
+	Author      *InventaireAuthorResult
+}
+
+type InventaireAuthorResult struct {
+	ID          string
+	Name        string
+	Description string
+}
+
+func (i *InventaireBookResult) UnmarshalJSON(b []byte) error {
+	var parsed struct {
+		Entities map[string]json.RawMessage
+	}
+	err := json.Unmarshal(b, &parsed)
+	if err != nil {
+		return err
+	}
+
+	for _, entity := range parsed.Entities {
+
+		var inventaireEntity struct {
+			WdId         string                     `json:"wdId"`
+			Type         string                     `json:"type"`
+			Labels       map[string]json.RawMessage `json:"labels"`
+			Descriptions map[string]json.RawMessage `json:"descriptions"`
+		}
+
+		err := json.Unmarshal(entity, &inventaireEntity)
+		if err != nil {
+			return err
+		}
+		if inventaireEntity.WdId == i.ID {
+			title, err := findLangageField(inventaireEntity.Labels, i.Lang)
+			if err != nil {
+				return err
+			}
+			i.Title = title
+			description, err := findLangageField(inventaireEntity.Descriptions, i.Lang)
+			if err != nil {
+				return err
+			}
+			i.Description = description
+		} else if inventaireEntity.Type == "human" {
+			a := InventaireAuthorResult{ID: inventaireEntity.WdId}
+			name, err := findLangageField(inventaireEntity.Labels, i.Lang)
+			if err != nil {
+				return err
+			}
+			a.Name = name
+			desc, err := findLangageField(inventaireEntity.Descriptions, i.Lang)
+			if err != nil {
+				return err
+			}
+			a.Description = desc
+			i.Author = &a
+		}
+	}
+	return err
+}
+
+func findLangageField(multipleMessageFields map[string]json.RawMessage, lang string) (string, error) {
+	fieldToParse, ok := multipleMessageFields[lang]
+	if ok {
+		var parsedField string
+		err := json.Unmarshal(fieldToParse, &parsedField)
+		if err != nil {
+			return "", err
+		}
+		return parsedField, err
+	} else {
+		return "", errors.New("multi lang field could not be parsed")
+	}
+}
+
+func CallInventaireBook(inventaireId string, lang string) (InventaireBookResult, error) {
+	queryResult := InventaireBookResult{ID: inventaireId, Lang: lang}
+	u, err := computeInventaireUrl("entities")
+	if err != nil {
+		return queryResult, err
+	}
+	callapiutils.AddQueryParam(u, "action", "by-uris")
+	callapiutils.AddQueryParam(u, "relatives", "wdt:P50")
+	callapiutils.AddQueryParam(u, "lang", lang)
+	callapiutils.AddQueryParam(u, "uris", "wd:"+inventaireId)
+
+	err = callapiutils.FetchAndParseResult(u, &queryResult)
+	return queryResult, err
+}