-- Foreign-key constraints + helper VIEWs across DOM.RF + Rosreestr tables.
-- Idempotent: bootstraps missing dimension rows first, then ALTER TABLE ... ADD CONSTRAINT IF NOT EXISTS.

-- ─────────────────────────────────────────────────────────────────────────
-- 1. BOOTSTRAP DIMENSION TABLES
-- ─────────────────────────────────────────────────────────────────────────

-- Add row 0 = РФ to domrf_regions (used as "all-Russia" placeholder by some tables)
INSERT INTO domrf_regions (region_id, region_name, federal_district)
VALUES (0, 'Российская Федерация', '_RF')
ON CONFLICT (region_id) DO NOTHING;

-- Backfill domrf_snapshots from every snapshot_date currently used in children
INSERT INTO domrf_snapshots (snapshot_date, notes)
SELECT DISTINCT s, 'auto-backfilled by 40_relations.sql' FROM (
    SELECT snapshot_date AS s FROM domrf_developers_full
    UNION SELECT snapshot_date FROM domrf_escrow_banks
    UNION SELECT snapshot_date FROM domrf_guaranty_regions
    UNION SELECT snapshot_date FROM domrf_housing_summary
    UNION SELECT snapshot_date FROM domrf_planned_commissioning
    UNION SELECT snapshot_date FROM domrf_sold_out
    UNION SELECT snapshot_date FROM domrf_sold_out_by_year
    UNION SELECT snapshot_date FROM domrf_sold_out_by_progress
    UNION SELECT snapshot_date FROM domrf_mortgage_rates
    UNION SELECT snapshot_date FROM domrf_region_aggregates
    UNION SELECT snapshot_date FROM domrf_flat_area_distribution
    UNION SELECT snapshot_date FROM domrf_developer_aggregates
    UNION SELECT snapshot_date FROM domrf_launch_top
    UNION SELECT snapshot_date FROM domrf_launch_obj_class
    UNION SELECT snapshot_date FROM domrf_launch_monthly
    UNION SELECT snapshot_date FROM domrf_sold_ready_index
    UNION SELECT snapshot_date FROM domrf_sold_ready_breakdown
    UNION SELECT snapshot_date FROM domrf_sold_ready_dynamics
    UNION SELECT snapshot_date FROM domrf_project_finance
    UNION SELECT snapshot_date FROM domrf_commissioning
    UNION SELECT snapshot_date FROM domrf_mortgage_dashboard
    UNION SELECT snapshot_date FROM domrf_mortgage_details
) AS dates
ON CONFLICT (snapshot_date) DO NOTHING;

-- Helper to add a constraint only if it does not already exist
-- (PostgreSQL ≥9.6: do via DO block; idempotent)
DO $$
DECLARE
    rec RECORD;
BEGIN
    -- ──────────────────────────────────────────────────────────────────────
    -- 2. SNAPSHOT FKs (every domrf_* with snapshot_date column)
    -- ──────────────────────────────────────────────────────────────────────
    FOR rec IN SELECT * FROM (VALUES
        ('domrf_developers_full',        'fk_snap_developers_full'),
        ('domrf_escrow_banks',           'fk_snap_escrow_banks'),
        ('domrf_guaranty_regions',       'fk_snap_guaranty_regions'),
        ('domrf_housing_summary',        'fk_snap_housing_summary'),
        ('domrf_planned_commissioning',  'fk_snap_planned_commissioning'),
        ('domrf_sold_out',               'fk_snap_sold_out'),
        ('domrf_sold_out_by_year',       'fk_snap_sold_out_by_year'),
        ('domrf_sold_out_by_progress',   'fk_snap_sold_out_by_progress'),
        ('domrf_mortgage_rates',         'fk_snap_mortgage_rates'),
        ('domrf_region_aggregates',      'fk_snap_region_aggregates'),
        ('domrf_flat_area_distribution', 'fk_snap_flat_area_distribution'),
        ('domrf_developer_aggregates',   'fk_snap_developer_aggregates'),
        ('domrf_launch_top',             'fk_snap_launch_top'),
        ('domrf_launch_obj_class',       'fk_snap_launch_obj_class'),
        ('domrf_launch_monthly',         'fk_snap_launch_monthly'),
        ('domrf_sold_ready_index',       'fk_snap_sold_ready_index'),
        ('domrf_sold_ready_breakdown',   'fk_snap_sold_ready_breakdown'),
        ('domrf_sold_ready_dynamics',    'fk_snap_sold_ready_dynamics'),
        ('domrf_project_finance',        'fk_snap_project_finance'),
        ('domrf_commissioning',          'fk_snap_commissioning'),
        ('domrf_mortgage_dashboard',     'fk_snap_mortgage_dashboard'),
        ('domrf_mortgage_details',       'fk_snap_mortgage_details'),
        ('domrf_raw_endpoints',          'fk_snap_raw_endpoints')
    ) AS t(tbl, cn)
    LOOP
        IF NOT EXISTS (
            SELECT 1 FROM pg_constraint WHERE conname = rec.cn
        ) THEN
            EXECUTE format(
                'ALTER TABLE %I ADD CONSTRAINT %I FOREIGN KEY (snapshot_date) REFERENCES domrf_snapshots(snapshot_date) ON UPDATE CASCADE',
                rec.tbl, rec.cn
            );
        END IF;
    END LOOP;

    -- ──────────────────────────────────────────────────────────────────────
    -- 3. REGION FKs (domrf_region_aggregates / flat_area_distribution / developer_aggregates → domrf_regions)
    -- ──────────────────────────────────────────────────────────────────────
    IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'fk_region_aggregates_region') THEN
        ALTER TABLE domrf_region_aggregates
            ADD CONSTRAINT fk_region_aggregates_region
            FOREIGN KEY (region_id) REFERENCES domrf_regions(region_id) ON UPDATE CASCADE;
    END IF;

    IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'fk_flat_area_region') THEN
        ALTER TABLE domrf_flat_area_distribution
            ADD CONSTRAINT fk_flat_area_region
            FOREIGN KEY (region_id) REFERENCES domrf_regions(region_id) ON UPDATE CASCADE;
    END IF;

    IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'fk_developer_agg_region') THEN
        ALTER TABLE domrf_developer_aggregates
            ADD CONSTRAINT fk_developer_agg_region
            FOREIGN KEY (region_id) REFERENCES domrf_regions(region_id) ON UPDATE CASCADE;
    END IF;

    -- ──────────────────────────────────────────────────────────────────────
    -- 4. DEVELOPER FK (domrf_developer_aggregates → domrf_developers)
    -- ──────────────────────────────────────────────────────────────────────
    IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'fk_developer_agg_developer') THEN
        ALTER TABLE domrf_developer_aggregates
            ADD CONSTRAINT fk_developer_agg_developer
            FOREIGN KEY (developer_id) REFERENCES domrf_developers(developer_id) ON UPDATE CASCADE;
    END IF;
END $$;

-- ─────────────────────────────────────────────────────────────────────────
-- 5. HELPER VIEWS
-- ─────────────────────────────────────────────────────────────────────────

-- v_region_master: одна строка на регион — все ключевые метрики на последний снапшот
DROP VIEW IF EXISTS v_region_master CASCADE;
CREATE VIEW v_region_master AS
WITH latest AS (SELECT MAX(snapshot_date) AS d FROM domrf_snapshots)
SELECT
    r.region_id,
    r.region_name,
    r.federal_district,
    -- Quartirografia totals (TOTAL row)
    rta.flat_count   AS total_flats,
    rta.area_sqm     AS total_area_sqm,
    -- Sold-out (DOM.RF PDF data)
    so.total_area_th_sqm                    AS sold_out_total_th_sqm,
    so.sold_pct                             AS sold_out_sold_pct,
    so.unsold_pct                           AS sold_out_unsold_pct,
    -- Sold-ready breakdown (Playwright API data)
    srb.square_sum                          AS sold_ready_square,
    srb.sold_perc                           AS sold_ready_sold_pct,
    srb.ready_perc                          AS sold_ready_ready_pct,
    srb.sold_ready_perc                     AS sold_ready_balance_pct,
    -- Project finance
    pf.rns_cnt                              AS project_finance_permits,
    pf.dev_cnt                              AS project_finance_developers,
    pf.guaranty_escrow_dev_cnt              AS project_finance_escrow_devs,
    -- Guaranty (XLSX)
    g.fz214_developers                      AS guaranty_fz214_devs,
    g.escrow_developers                     AS guaranty_escrow_devs,
    -- Launch (запуски новых)
    (SELECT value FROM domrf_launch_top
        WHERE dim_type = 'region' AND metric_type = 'app'
          AND entity_id = r.region_id::text AND snapshot_date = (SELECT d FROM latest)
        LIMIT 1)                            AS launch_app_2026_sqm,
    (SELECT value FROM domrf_launch_top
        WHERE dim_type = 'region' AND metric_type = 'rnv'
          AND entity_id = r.region_id::text AND snapshot_date = (SELECT d FROM latest)
        LIMIT 1)                            AS launch_rnv_2026_sqm
FROM domrf_regions r
LEFT JOIN domrf_region_aggregates rta
       ON rta.region_id = r.region_id
      AND rta.room_count_type = 'TOTAL'
      AND rta.snapshot_date = (SELECT d FROM latest)
LEFT JOIN domrf_sold_out so
       ON so.territory_name = r.region_name
      AND so.snapshot_date = (SELECT MAX(snapshot_date) FROM domrf_sold_out WHERE territory_name = r.region_name)
LEFT JOIN domrf_sold_ready_breakdown srb
       ON srb.entity_key = r.region_name
      AND srb.chart_type = 'regionChart'
      AND srb.snapshot_date = (SELECT MAX(snapshot_date) FROM domrf_sold_ready_breakdown WHERE chart_type='regionChart')
LEFT JOIN domrf_project_finance pf
       ON pf.subject_name = r.region_name
      AND pf.snapshot_date = (SELECT MAX(snapshot_date) FROM domrf_project_finance)
LEFT JOIN domrf_guaranty_regions g
       ON g.territory_name = r.region_name
      AND g.snapshot_date = (SELECT MAX(snapshot_date) FROM domrf_guaranty_regions)
WHERE r.region_id > 0
ORDER BY total_area_sqm DESC NULLS LAST;

COMMENT ON VIEW v_region_master IS
    'Один срез по региону: квартирография + распроданность (DOM.РФ + sold_out PDF) + проектное финансирование + запуски/ввод 2026';

-- v_developer_master: профиль застройщика (latest snapshot)
DROP VIEW IF EXISTS v_developer_master CASCADE;
CREATE VIEW v_developer_master AS
WITH latest AS (SELECT MAX(snapshot_date) AS d FROM domrf_snapshots)
SELECT
    d.developer_id,
    d.developer_name,
    -- Group-of-companies aggregates (from JSON dashboard)
    dat.flat_count   AS group_flat_count,
    dat.area_sqm     AS group_area_sqm,
    -- Per-юрлицо реестр (XLSX)
    df.area_thousand_sqm   AS legal_area_th_sqm,
    df.permits_count       AS legal_permits,
    df.houses_count        AS legal_houses,
    df.flats_count         AS legal_flats,
    df.market_share_pct    AS market_share_pct,
    -- Запуски / ввод 2026 (из launch_top, dim=developer)
    (SELECT value FROM domrf_launch_top
        WHERE dim_type='developer' AND metric_type='app'
          AND entity_id = d.developer_id AND snapshot_date = (SELECT d FROM latest)
        LIMIT 1)              AS launch_app_2026_sqm,
    (SELECT value FROM domrf_launch_top
        WHERE dim_type='developer' AND metric_type='rnv'
          AND entity_id = d.developer_id AND snapshot_date = (SELECT d FROM latest)
        LIMIT 1)              AS launch_rnv_2026_sqm,
    -- Распроданность (devChart)
    (SELECT square_sum FROM domrf_sold_ready_breakdown
        WHERE chart_type='devChart' AND entity_key = d.developer_name
          AND snapshot_date = (SELECT MAX(snapshot_date) FROM domrf_sold_ready_breakdown WHERE chart_type='devChart')
        LIMIT 1)              AS sold_ready_square,
    (SELECT sold_perc FROM domrf_sold_ready_breakdown
        WHERE chart_type='devChart' AND entity_key = d.developer_name
          AND snapshot_date = (SELECT MAX(snapshot_date) FROM domrf_sold_ready_breakdown WHERE chart_type='devChart')
        LIMIT 1)              AS sold_ready_sold_pct
FROM domrf_developers d
LEFT JOIN domrf_developer_aggregates dat
       ON dat.developer_id = d.developer_id
      AND dat.room_count_type = 'TOTAL'
      AND dat.snapshot_date = (SELECT d FROM latest)
LEFT JOIN domrf_developers_full df
       ON df.developer_name = d.developer_name
      AND df.snapshot_date = (SELECT MAX(snapshot_date) FROM domrf_developers_full WHERE developer_name = d.developer_name);

COMMENT ON VIEW v_developer_master IS
    'Профиль застройщика: реестр + квартирография по комнатностям + запуски/ввод + распроданность';

-- v_rosreestr_market_by_region — срез цен сделок и застройщиков по региону
DROP VIEW IF EXISTS v_rosreestr_market_by_region CASCADE;
CREATE VIEW v_rosreestr_market_by_region AS
SELECT
    r.region_id,
    r.region_name,
    r.federal_district,
    rar.period_start_date,
    rar.doc_type,
    rar.deals_count,
    rar.median_price_sqm AS median_rub_sqm,
    rar.p10_price_sqm    AS p10_rub_sqm,
    rar.p90_price_sqm    AS p90_rub_sqm
FROM domrf_regions r
JOIN rr_agg_region rar
       ON rar.region_code = r.region_id
WHERE rar.realestate_type_code = '002001003000'   -- Помещения (квартиры)
ORDER BY r.region_id, rar.period_start_date, rar.doc_type;

COMMENT ON VIEW v_rosreestr_market_by_region IS
    'Цены сделок Росреестра по регионам с DOM.РФ-именами регионов (квартиры)';

-- v_market_pulse_rf — РФ-уровень summary с разных источников за last snapshot
DROP VIEW IF EXISTS v_market_pulse_rf CASCADE;
CREATE VIEW v_market_pulse_rf AS
SELECT
    -- Quartirografia
    (SELECT SUM(area_sqm)/1e6 FROM domrf_region_aggregates
        WHERE room_count_type='TOTAL'
          AND snapshot_date = (SELECT MAX(snapshot_date) FROM domrf_region_aggregates)) AS total_construction_mln_sqm,
    -- Sold-ready
    (SELECT square_sum/1e6 FROM domrf_sold_ready_index
        ORDER BY snapshot_date DESC LIMIT 1)             AS sold_ready_total_mln_sqm,
    (SELECT sold_perc FROM domrf_sold_ready_index
        ORDER BY snapshot_date DESC LIMIT 1)             AS sold_pct,
    (SELECT ready_perc FROM domrf_sold_ready_index
        ORDER BY snapshot_date DESC LIMIT 1)             AS ready_pct,
    -- Прайс
    (SELECT avg_price_per_sqm FROM domrf_sold_out
        WHERE territory_name = 'Российская Федерация'
        ORDER BY snapshot_date DESC LIMIT 1)             AS rf_avg_price_per_sqm,
    -- Ставки
    (SELECT primary_rate FROM domrf_mortgage_rates
        WHERE bank_name = 'Средневзвешенная'
        ORDER BY snapshot_date DESC LIMIT 1)             AS market_primary_rate,
    (SELECT secondary_rate FROM domrf_mortgage_rates
        WHERE bank_name = 'Средневзвешенная'
        ORDER BY snapshot_date DESC LIMIT 1)             AS market_secondary_rate,
    -- Реальные ставки (по выданным кредитам)
    (SELECT primary_credit_avg_rate FROM domrf_mortgage_dashboard
        ORDER BY snapshot_date DESC LIMIT 1)             AS actual_primary_rate,
    (SELECT secondary_credit_avg_rate FROM domrf_mortgage_dashboard
        ORDER BY snapshot_date DESC LIMIT 1)             AS actual_secondary_rate,
    -- Объём кредитования
    (SELECT total_credit_count FROM domrf_mortgage_dashboard
        ORDER BY snapshot_date DESC LIMIT 1)             AS total_credit_count,
    (SELECT total_credit_amount/1e9 FROM domrf_mortgage_dashboard
        ORDER BY snapshot_date DESC LIMIT 1)             AS total_credit_amount_bln_rub;

COMMENT ON VIEW v_market_pulse_rf IS
    'РФ pulse: объём строительства, распроданность, средняя цена, ставки (рыночные vs реальные), объём ипотеки';