CREATE OR REPLACE FUNCTION concat_delim(IN delim text, VARIADIC text[])
  RETURNS text AS
$BODY$
SELECT NULLIF(array_to_string($2, $1), ''::text)
$BODY$
  LANGUAGE sql IMMUTABLE
  COST 100;
COMMENT ON FUNCTION concat_delim(text, text[]) IS 'Similar to concat() but separates elements with a delimeter';


CREATE TABLE tnrs
(
  "Time_submitted" timestamp with time zone,
  "Name_number" text,
  "Name_submitted" text NOT NULL,
  "Overall_score" text,
  "Name_matched" text,
  "Name_matched_rank" text,
  "Name_score" text,
  "Name_matched_author" text,
  "Name_matched_url" text,
  "Author_matched" text,
  "Author_score" text,
  "Family_matched" text,
  "Family_score" text,
  "Name_matched_accepted_family" text,
  "Genus_matched" text,
  "Genus_score" text,
  "Specific_epithet_matched" text,
  "Specific_epithet_score" text,
  "Infraspecific_rank" text,
  "Infraspecific_epithet_matched" text,
  "Infraspecific_epithet_score" text,
  "Infraspecific_rank_2" text,
  "Infraspecific_epithet_2_matched" text,
  "Infraspecific_epithet_2_score" text,
  "Annotations" text,
  "Unmatched_terms" text,
  "Taxonomic_status" text,
  "Accepted_name" text,
  "Accepted_name_author" text,
  "Accepted_name_rank" text,
  "Accepted_name_url" text,
  "Accepted_name_species" text,
  "Accepted_name_family" text,
  "Selected" text,
  "Source" text,
  "Warnings" text,
  "Accepted_name_lsid" text,
  "Accepted_scientific_name" text,
  "Max_score" double precision,
  CONSTRAINT tnrs_pkey PRIMARY KEY ("Name_submitted" )
)
WITH (
  OIDS=FALSE
);

CREATE OR REPLACE FUNCTION tnrs_populate_derived_fields()
  RETURNS trigger AS
$BODY$
BEGIN
    new."Accepted_scientific_name" = concat_delim(' '
        , NULLIF(NULLIF(new."Accepted_name_family", 'Unknown'), new."Accepted_name")
        , new."Accepted_name"
        , new."Accepted_name_author"
    );
    new."Max_score" = GREATEST(
          new."Overall_score"::double precision
        , new."Family_score"::double precision
        , new."Genus_score"::double precision
        , new."Specific_epithet_score"::double precision
    );
    
    RETURN new;
END;
$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100;

CREATE TRIGGER tnrs_populate_derived_fields
  BEFORE INSERT OR UPDATE
  ON tnrs
  FOR EACH ROW
  EXECUTE PROCEDURE tnrs_populate_derived_fields();


CREATE OR REPLACE VIEW "MatchedTaxon" AS
SELECT
  "Time_submitted" AS "*Name_matched.Time_submitted"
, "Name_matched" AS "matchedTaxonName"
, "Name_matched_rank" AS "matchedTaxonRank"
, "Name_score" AS "*Name_matched.Name_score"
, "Name_matched_author" AS "matchedScientificNameAuthorship"
, "Name_matched_url" AS "matchedScientificNameID"
, "Author_score" AS "*Name_matched.Author_score"
, "Family_score" AS "matchedFamilyConfidence_fraction"
, "Name_matched_accepted_family" AS family
, "Genus_matched" AS genus
, "Genus_score" AS "matchedGenusConfidence_fraction"
, "Specific_epithet_matched" AS "matchedSpecificEpithet"
, "Specific_epithet_score" AS "matchedSpeciesConfidence_fraction"
, "Infraspecific_epithet_matched" AS "matchedInfraspecificEpithet"
, "Infraspecific_epithet_score" AS "*Name_matched.Infraspecific_epithet_score"
, "Annotations" AS "identificationQualifier"
, "Unmatched_terms" AS "morphospeciesSuffix"
, "Taxonomic_status" AS "taxonomicStatus"
, "Accepted_name" AS "acceptedTaxonName"
, "Accepted_name_author" AS "acceptedScientificNameAuthorship"
, "Accepted_name_rank" AS "acceptedTaxonRank"
, "Accepted_name_url" AS "acceptedScientificNameID"
, "Accepted_name_species" AS "*Name_matched.Accepted_name_species"
, "Accepted_name_family" AS "acceptedFamily"
, "Selected" AS "*Name_matched.Selected"
, "Source" AS "*Name_matched.Source"
, "Warnings" AS "*Name_matched.Warnings"
, "Accepted_name_lsid" AS "*Name_matched.Accepted_name_lsid"
, "Accepted_scientific_name" AS "acceptedScientificName"
, "Max_score" AS "matchedTaxonConfidence_fraction"
FROM tnrs;

CREATE OR REPLACE VIEW "AcceptedTaxon" AS
SELECT
  "Time_submitted" AS "*Accepted_name.Time_submitted"
, "Name_submitted" AS "acceptedScientificName"
, "Genus_matched" AS "acceptedGenus"
, "Specific_epithet_matched" AS "acceptedSpecificEpithet"
, "Infraspecific_epithet_matched" AS "acceptedInfraspecificEpithet"
, "Annotations" AS "*Accepted_name.Annotations"
, "Taxonomic_status" AS "acceptedTaxonomicStatus"
, "Selected" AS "*Accepted_name.Selected"
, "Source" AS "*Accepted_name.Source"
, "Warnings" AS "*Accepted_name.Warnings"
, "Accepted_name_lsid" AS "*Accepted_name.Accepted_name_lsid"
FROM tnrs;

CREATE OR REPLACE VIEW "ScrubbedTaxon" AS
SELECT *
FROM "MatchedTaxon"
NATURAL LEFT JOIN "AcceptedTaxon"
;