Update RecordCdsConfPaper to add the attribute conference

modules/store_tools/recordcdsconfpaper.py

 """ store_tools.recordcdsconfpaper
 
 """
-from .base import REG_CONF, REG_YEAR
+import re
+
+from .base import REG_CONF, REG_YEAR, T4, T6
+from .cdsstore import CdsStore
 from plugin_dbui import CLEAN_SPACES
-from store_tools.recordcdspubli import RecordCdsPubli
+from .recordcdspubli import RecordCdsPubli
+
+REX_DATE8 = re.compile(r"(\d{4})(\d{2})(\d{2})")
 
 
 class RecordCdsConfPaper(RecordCdsPubli):
     """The record describing a conference talk or a proceeding.
-    Additional field describing the conference data are:
 
-        +----------------+-----------------------------------------------+
-        | field          | subfield                                      |
-        +================+===============================================+
-        | meeting_name   | closing_date, coference_code, country, date,  |
-        |                | location, opening_date, year                  |
-        +----------------+-----------------------------------------------+
+    Attributes:
+        conference (dict or None):
+            the conference metadata:
+                * addresses: [{cities: [], country: str, ...}, ...]
+                * cnum: str
+                * control_number: int
+                * closing_date: str
+                * opening_date: str
+                * titles: [{value: str}, ...]
+                * urls: [{value: str}, ...]
+                * year
 
-    One field is added by limbra:
+    """
 
-        +----------------+-----------------------------------------------+
-        | field (limbra) | subfield                                      |
-        +================+===============================================+
-        | meeting_note   | recid, url                                    |
-        +----------------+-----------------------------------------------+
+    def __init__(self, recjson):
 
-    """
+        super().__init__(recjson)
+
+        self.conference = None
+        self._process_conference_data()
+
+    def _process_conference_data(self):
+        """Append the conference data to the record.
+
+        """
+        logger = self.logger
+        logger.debug(f"{T4}process conference data")
+
+        if "aleph_linking_page" not in self:
+            logger.debug(f"{T6}no field 'aleph_linking_page'")
+            return
+
+        dct = self.get("aleph_linking_page", {})
+        conf_id = dct.get("sysno", None)
+        conf_key = dct.get("up_link", None)
+
+        if conf_id is None and conf_key is None:
+            logger.debug(f"{T6}no conference id and key")
+            return
+
+        # ........................................................................
+        #
+        # Get conference data first id and then by key
+        #
+        store = CdsStore("cds.cern.ch")
+
+        if conf_id is not None:
+            logger.debug(f"{T6}search by conference by id {conf_id}")
+            recjson = store.get_record(conf_id)
+
+            if recjson["recid"] != conf_id:
+                logger.debug(f"{T6}failed to retrieve conference by id")
+
+            if recjson.get("meeting_name", None) is None:
+                logger.debug(f"{T6}no field 'meeting_name'")
+                return
+
+        elif conf_key is not None:
+            logger.debug(f"{T6}search by conference by key {conf_key}")
+            ids = store.get_ids(p=conf_key)
+
+            mtch = False
+            for cid in ids:
+                recjson = store.get_record(cid)
+
+                for elt in recjson.get("meeting_name", []):
+                    ck = elt.get("coference_code", "")
+                    if ck == conf_key:
+                        mtch = True
+                        break
+
+                if mtch is True:
+                    break
+
+            if mtch is False:
+                logger.debug(f"{T6}failed to retrieve conference by key")
+                return
+
+        # ........................................................................
+        #
+        # Decode conference data
+        # Convert structure to the one provides by the new inspirehep.net
+        #
+        data = None
+        for elt in recjson["meeting_name"]:
+            if "year" in elt:
+                data = elt
+                break
+
+        if data is None:
+            logger.debug(f"{T6}conference data not found")
+            return
+
+        city, country = data.get("location", ",").split(",")
+
+        dct = {
+            "addresses": [{
+                "cities": [city.strip()],
+                "country": country.strip()}],
+            "cnum": data.get("coference_code"),
+            "closing_date": data.get("closing_date", None),
+            "opening_date": data.get("opening_date", None),
+            "titles": [{"value": data.get("meeting", None)}],
+            "urls": [recjson.get("url", {}).get("url", None)],
+            "year": data.get("year", None)}
+
+        # date format issue YYYYMMDD to YYYY-MM-DD
+        for k in ("closing_date", "opening_date"):
+            mtch = REX_DATE8.match(dct[k])
+            if mtch:
+                dct[k] = "-".join(mtch.groups())
+
+        # ........................................................................
+        #
+        # Append conference data
+        self.conference = dct
 
     def conference_country(self):
         """The country where the conference took place.