fix repeatable migrations

db/views/R__059_vw_operating_mode.sql

@@ -0,0 +1,97 @@
+-- =============================================================
+-- R__059_vw_operating_mode.sql
+-- EMS Platform – views pro provozní režimy a heartbeat
+-- Repeatable migration
+-- =============================================================
+
+-- Aktuální EMS provozní režim per lokalita (PostgREST / UI)
+CREATE OR REPLACE VIEW ems.vw_operating_mode AS
+SELECT
+    s.id                            AS site_id,
+    s.code                          AS site_code,
+    m.mode_code                     AS active_mode,
+    d.name                          AS mode_name,
+    d.description                   AS mode_description,
+    d.is_autonomous,
+    m.activated_at,
+    m.activated_by,
+    m.valid_until,
+    m.previous_mode,
+    m.notes                         AS mode_notes
+FROM ems.site s
+LEFT JOIN ems.site_operating_mode m ON m.site_id = s.id
+LEFT JOIN ems.operating_mode_def d ON d.code = m.mode_code
+WHERE s.active = true;
+
+COMMENT ON VIEW ems.vw_operating_mode IS
+'Aktuální provozní režim EMS per aktivní lokalita (bez telemetrie/heartbeat).';
+
+-- Aktuální stav všech lokalit (pro dashboard a PostgREST)
+CREATE OR REPLACE VIEW ems.vw_site_status AS
+SELECT
+    s.id                            AS site_id,
+    s.code                          AS site_code,
+    s.name                          AS site_name,
+    m.mode_code                     AS active_mode,
+    d.name                          AS mode_name,
+    d.description                   AS mode_description,
+    d.is_autonomous,
+    m.activated_at,
+    m.activated_by,
+    m.valid_until,
+    m.previous_mode,
+    m.notes                         AS mode_notes,
+    -- Heartbeat
+    hb.last_seen                    AS ems_last_seen,
+    hb.status                       AS ems_status,
+    EXTRACT(EPOCH FROM (now() - hb.last_seen))::INT AS ems_age_seconds,
+    -- Varování pokud EMS dlouho nepingoval
+    CASE
+        WHEN hb.last_seen IS NULL                              THEN 'never_seen'
+        WHEN now() - hb.last_seen > INTERVAL '5 minutes'      THEN 'stale'
+        WHEN now() - hb.last_seen > INTERVAL '2 minutes'      THEN 'delayed'
+        ELSE 'ok'
+    END                             AS ems_heartbeat_status,
+    -- Aktuální telemetrie (snapshot)
+    li.pv_power_w,
+    li.battery_soc_percent,
+    li.battery_power_w,
+    li.grid_power_w,
+    li.load_power_w,
+    li.measured_at                  AS telemetry_at
+FROM ems.site s
+LEFT JOIN ems.site_operating_mode m    ON m.site_id = s.id
+LEFT JOIN ems.operating_mode_def d     ON d.code = m.mode_code
+LEFT JOIN ems.site_heartbeat hb        ON hb.site_id = s.id
+LEFT JOIN ems.vw_latest_inverter li    ON li.site_id = s.id
+WHERE s.active = true;
+
+COMMENT ON VIEW ems.vw_site_status IS
+'Kompletní stavový přehled lokality: aktivní režim, heartbeat EMS, aktuální telemetrie.
+Primární view pro dashboard a health check endpoint. Jeden řádek na aktivní lokalitu.
+ems_heartbeat_status slouží pro EMS vlastní alerting – Loxone watchdog tuto tabulku nečte,
+sleduje HTTP pulzy přímo (viz docs/loxone-integration.md).';
+
+-- ============================================================
+
+-- Log přepnutí režimů (pro UI historii)
+CREATE OR REPLACE VIEW ems.vw_mode_log_recent AS
+SELECT
+    l.id,
+    l.site_id,
+    s.code          AS site_code,
+    l.mode_code,
+    d.name          AS mode_name,
+    l.activated_at,
+    l.deactivated_at,
+    EXTRACT(EPOCH FROM COALESCE(l.deactivated_at, now()) - l.activated_at)::INT AS duration_sec,
+    l.activated_by,
+    l.notes
+FROM ems.site_operating_mode_log l
+JOIN ems.site s ON s.id = l.site_id
+JOIN ems.operating_mode_def d ON d.code = l.mode_code
+WHERE l.activated_at >= now() - INTERVAL '7 days'
+ORDER BY l.activated_at DESC;
+
+COMMENT ON VIEW ems.vw_mode_log_recent IS
+'Posledních 7 dní přepnutí provozních režimů. Slouží pro audit log v UI.';