-- =============================================================
-- V045__seed_site_kv1.sql
-- Idempotentní seed lokality KV1 (viz docs/new-site-setup-template.md).
-- 25 A přívod → import max 17 kW; přetok / export max 8 kW.
-- Nákup fixní 5,25 Kč/kWh bez DPH (jednotná sazba – na místě není NT tarif; HDO NULL).
-- Prodej na spotu jako home-01 (marže sell -0,02 Kč/kWh).
-- Deye 12 kW LV, baterie 12,5 kWh, 0,5C; Waveshare 172.16.2.10. Bez Loxone.
-- Start: MANUAL (EMS nezapisuje setpointy); fyzicky Deye PASSIVE dle poznámky.
-- =============================================================

DO $$
DECLARE
    v_site_code TEXT := 'KV1';

    v_host_deye TEXT := '172.16.2.10';
    v_port_deye INT  := 502;

    v_site_id  INT;
    v_ep_deye  INT;
    v_inv_main INT;
BEGIN
    INSERT INTO ems.site (code, name, timezone, latitude, longitude, active, notes)
    VALUES (
        v_site_code,
        'KV1',
        'Europe/Prague',
        49.23988687187006,
        17.47170575741328,
        true,
        'Připojení max 25 A → import cca 17 kW; povolený přetok / export 8 kW. '
        'Waveshare RS485→TCP ' || v_host_deye || '. Loxone na instalaci není. '
        'Provozní start: EMS režim MANUAL (bez zápisů); střídač nechat v PASSIVE do ověření.'
    )
    ON CONFLICT (code) DO UPDATE SET
        name      = EXCLUDED.name,
        timezone  = EXCLUDED.timezone,
        latitude  = EXCLUDED.latitude,
        longitude = EXCLUDED.longitude,
        active    = EXCLUDED.active,
        notes     = EXCLUDED.notes
    RETURNING id INTO v_site_id;

    SELECT se.id INTO v_ep_deye
    FROM ems.site_endpoint se
    WHERE se.site_id = v_site_id
      AND se.endpoint_type = 'modbus_tcp'
      AND se.notes ILIKE '%Deye%'
    ORDER BY se.id
    LIMIT 1;

    IF v_ep_deye IS NULL THEN
        INSERT INTO ems.site_endpoint (
            site_id, endpoint_type, host, port, protocol, unit_id, enabled, notes
        )
        VALUES (
            v_site_id, 'modbus_tcp', v_host_deye, v_port_deye, 'modbus_tcp', 1, true,
            'Deye 12kW LV – Modbus TCP (Waveshare).'
        )
        RETURNING id INTO v_ep_deye;
    END IF;

    INSERT INTO ems.site_grid_connection (
        site_id, max_import_power_w, max_export_power_w, no_export, reserved_capacity_w, notes
    )
    VALUES (
        v_site_id, 17000, 8000, false, 0,
        'Max 25 A přívod → cca 17 kW import; přetok do sítě max 8 kW.'
    )
    ON CONFLICT (site_id) DO UPDATE SET
        max_import_power_w  = EXCLUDED.max_import_power_w,
        max_export_power_w  = EXCLUDED.max_export_power_w,
        no_export           = EXCLUDED.no_export,
        reserved_capacity_w = EXCLUDED.reserved_capacity_w,
        notes               = EXCLUDED.notes;

    IF NOT EXISTS (
        SELECT 1 FROM ems.site_market_config smc
        WHERE smc.site_id = v_site_id AND smc.valid_to IS NULL
    ) THEN
        INSERT INTO ems.site_market_config (
            site_id,
            purchase_pricing_mode, sale_pricing_mode,
            buy_margin_fixed_czk, buy_margin_percent,
            sell_margin_fixed_czk, sell_margin_percent,
            currency, valid_from, valid_to, notes,
            tariff_id, hdo_code_id, system_services_czk_kwh, ote_fee_czk_kwh,
            buy_fixed_energy_nt_czk_kwh, buy_fixed_vt_surcharge_czk_kwh
        )
        VALUES (
            v_site_id,
            'fixed', 'spot',
            0, 0,
            -0.020, 0,
            'CZK', now(), NULL,
            'Nákup fixní 5,25 Kč/kWh bez DPH (jednotná sazba; NT tarif na místě není – bez HDO okna). '
            'Prodej na spotu jako home-01 (sell_margin_fixed -0,02 Kč/kWh). '
            'Distribuce v efektivní ceně 0 (tariff_id NULL).',
            NULL,
            NULL,
            0,
            0,
            5.25,
            0
        );
    END IF;

    INSERT INTO ems.site_operating_mode (site_id, mode_code, activated_by, notes)
    VALUES (
        v_site_id,
        'MANUAL',
        'migration:V045_seed_site_kv1',
        'Start MANUAL; střídač PASSIVE. Po ověření přepnout na AUTO a Deye dle plánu.'
    )
    ON CONFLICT (site_id) DO NOTHING;

    SELECT ai.id INTO v_inv_main
    FROM ems.asset_inverter ai
    WHERE ai.site_id = v_site_id AND ai.code = 'deye-main'
    LIMIT 1;

    IF v_inv_main IS NULL THEN
        INSERT INTO ems.asset_inverter (
            site_id, code, manufacturer, model, endpoint_id,
            max_charge_power_w, max_discharge_power_w, max_export_power_w,
            max_ac_output_w, max_dc_input_w, max_battery_charge_w, max_battery_discharge_w,
            gen_port_max_power_w,
            controllable, active, notes
        )
        VALUES (
            v_site_id,
            'deye-main',
            'Deye',
            NULL,
            v_ep_deye,
            6250, 6250, 8000,
            12000, 15000, 6250, 6250,
            NULL,
            true, true,
            '12kW LV hybrid. BMS max proud z/do baterie 280 A; plánování dle 0,5C ≈ 6,25 kW. '
            'Export do DS max 8 kW dle site_grid_connection.'
        )
        RETURNING id INTO v_inv_main;
    END IF;

    IF NOT EXISTS (
        SELECT 1 FROM ems.asset_battery ab
        WHERE ab.site_id = v_site_id AND ab.code = 'bat-main'
    ) THEN
        INSERT INTO ems.asset_battery (
            site_id, inverter_id, code,
            usable_capacity_wh, min_soc_percent, reserve_soc_percent, max_soc_percent,
            charge_efficiency, discharge_efficiency, degradation_cost_czk_kwh,
            max_charge_c_rate, max_discharge_c_rate, bms_max_charge_w, bms_max_discharge_w
        )
        VALUES (
            v_site_id, v_inv_main, 'bat-main',
            12500,
            10, 15, 95,
            0.95, 0.95,
            0.50,
            0.5, 0.5,
            6250, 6250
        );
    END IF;

    -- String 1: 9×460 Wp, sklon 50°, azimut 150° (řiditelné)
    IF NOT EXISTS (
        SELECT 1 FROM ems.asset_pv_array ap
        WHERE ap.site_id = v_site_id AND ap.code = 'pv-str-1'
    ) THEN
        INSERT INTO ems.asset_pv_array (
            site_id, inverter_id, code, name,
            nominal_power_wp, azimuth_deg, tilt_deg, module_count, shading_factor,
            controllable, telemetry_source, notes
        )
        VALUES (
            v_site_id, v_inv_main, 'pv-str-1', 'String 1 – 9×460 Wp',
            4140, 150, 50, 9, 1.0, true, 'pv_strings',
            'Hlavní telemetrie stringů Deye; druhý string má telemetry_source NULL.'
        );
    END IF;

    -- String 2: 7×620 Wp, sklon 50°, azimut 241° (řiditelné)
    IF NOT EXISTS (
        SELECT 1 FROM ems.asset_pv_array ap
        WHERE ap.site_id = v_site_id AND ap.code = 'pv-str-2'
    ) THEN
        INSERT INTO ems.asset_pv_array (
            site_id, inverter_id, code, name,
            nominal_power_wp, azimuth_deg, tilt_deg, module_count, shading_factor,
            controllable, telemetry_source, notes
        )
        VALUES (
            v_site_id, v_inv_main, 'pv-str-2', 'String 2 – 7×620 Wp',
            4340, 241, 50, 7, 1.0, true, NULL,
            'Vlastní predikce orientace; telemetrie sdílená se stringem 1.'
        );
    END IF;

END;
$$;