CREATE OR REPLACE VIEW waterway.gauges_geoserver AS
    SELECT
        g.location,
        isrs_asText(g.location) AS isrs_code,
        g.objname,
        g.geom,
        g.applicability_from_km,
        g.applicability_to_km,
        g.validity,
        g.zero_point,
        g.geodref,
        g.date_info,
        g.source_organization,
        json_strip_nulls(json_object_agg(coalesce(r.depth_reference,'empty'),
                                                  r.value))
            AS reference_water_levels
    FROM waterway.gauges g
        LEFT JOIN waterway.gauges_reference_water_levels r
            ON r.gauge_id = g.location
    GROUP BY g.location;

CREATE OR REPLACE VIEW waterway.distance_marks_geoserver AS
    SELECT location_code,
       isrs_asText(location_code) AS location,
       geom::Geometry(POINT, 4326),
       related_enc,
       (location_code).hectometre
    FROM waterway.distance_marks_virtual;

CREATE OR REPLACE VIEW waterway.distance_marks_ashore_geoserver AS
    SELECT id,
       country,
       geom::Geometry(POINT, 4326),
       related_enc,
       hectom,
       catdis,
       position_code
    FROM waterway.distance_marks;

CREATE OR REPLACE VIEW waterway.bottlenecks_geoserver AS
    WITH
    fairway_availability_latest AS (
        SELECT DISTINCT ON (bottleneck_id) bottleneck_id, date_info, critical
            FROM waterway.fairway_availability
            ORDER BY bottleneck_id, date_info DESC),
    waterlevel_latest AS (
        SELECT DISTINCT ON (fk_gauge_id) fk_gauge_id, water_level
            FROM waterway.gauge_measurements
            WHERE is_waterlevel
            ORDER BY fk_gauge_id, measure_date DESC)
    SELECT
        b.id,
        b.bottleneck_id,
        b.objnam,
        b.nobjnm,
        b.stretch,
        b.area,
        b.rb,
        b.lb,
        b.responsible_country,
        b.revisiting_time,
        b.limiting,
        b.date_info,
        b.source_organization,
        g.location AS gauge_isrs_code,
        g.objname AS gauge_objname,
        json_strip_nulls(json_object_agg(coalesce(r.depth_reference,'empty'),
                                                  r.value))
            AS reference_water_levels,
        fal.date_info AS fa_date_info,
        fal.critical AS fa_critical,
        wl.water_level AS gm_waterlevel
    FROM waterway.bottlenecks b
        LEFT JOIN waterway.gauges g
            ON b.fk_g_fid = g.location
        LEFT JOIN waterway.gauges_reference_water_levels r
            ON g.location = r.gauge_id
        LEFT JOIN fairway_availability_latest fal
            ON b.id = fal.bottleneck_id
        LEFT JOIN waterlevel_latest wl
            ON b.fk_g_fid = wl.fk_gauge_id
    GROUP BY b.id, g.location, fal.date_info, fal.critical, wl.water_level;

CREATE OR REPLACE VIEW waterway.stretches_geoserver AS
    SELECT
        id,
        name,
        (stretch).lower::varchar as lower,
        (stretch).upper::varchar as upper,
        area::Geometry(MULTIPOLYGON, 4326),
        objnam,
        nobjnam,
        date_info,
        source_organization,
        (SELECT string_agg(country_code, ', ')
            FROM waterway.stretch_countries
            WHERE stretches_id = id) AS countries,
        staging_done
    FROM waterway.stretches;

CREATE OR REPLACE VIEW waterway.sounding_results_contour_lines_geoserver AS
    SELECT bottleneck_id,
        date_info,
        height,
        CAST(lines AS geometry(multilinestring, 4326)) AS lines
    FROM waterway.sounding_results_contour_lines cl
        JOIN waterway.sounding_results sr ON sr.id = cl.sounding_result_id;

CREATE OR REPLACE VIEW waterway.bottleneck_overview AS
    SELECT
        objnam AS name,
        ST_Centroid(area)::Geometry(POINT, 4326) AS point,
        (lower(stretch)).hectometre AS from,
        (upper(stretch)).hectometre AS to,
        sr.current::text,
        responsible_country
    FROM waterway.bottlenecks bn LEFT JOIN (
        SELECT bottleneck_id, max(date_info) AS current
            FROM waterway.sounding_results
            GROUP BY bottleneck_id) sr ON sr.bottleneck_id = bn.id
    ORDER BY objnam;

CREATE OR REPLACE VIEW waterway.sounding_differences AS
    SELECT
        sd.id           AS id,
        bn.objnam       AS objnam,
        srm.date_info   AS minuend,
        srs.date_info   AS subtrahend,
        sdcl.height     AS height,
        CAST(sdcl.lines AS geometry(multilinestring, 4326)) AS lines
    FROM caching.sounding_differences sd
        JOIN caching.sounding_differences_contour_lines sdcl
            ON sd.id = sdcl.sounding_differences_id
        JOIN waterway.sounding_results srm
            ON sd.minuend = srm.id
        JOIN waterway.sounding_results srs
            ON sd.subtrahend = srs.id
        JOIN waterway.bottlenecks bn
            ON srm.bottleneck_id = bn.id;