add features
This commit is contained in:
Matthias Hochmeister
270
backend/src/database/migrations/004_create_einsaetze.sql
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270
backend/src/database/migrations/004_create_einsaetze.sql
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-- Migration: 004_create_einsaetze.sql
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-- Feature: Einsatzprotokoll (Incident Management)
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-- Depends on: 001_create_users_table.sql
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-- Rollback instructions at bottom of file
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-- ---------------------------------------------------------------------------
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-- ENUM-LIKE CHECK CONSTRAINTS (as VARCHAR + CHECK for easy extension)
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-- ---------------------------------------------------------------------------
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-- ---------------------------------------------------------------------------
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-- SEQUENCE SUPPORT TABLE for year-based Einsatz-Nr (YYYY-NNN)
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-- One row per year; nextval equivalent done via UPDATE...RETURNING
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-- ---------------------------------------------------------------------------
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CREATE TABLE IF NOT EXISTS einsatz_nr_sequence (
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year INTEGER PRIMARY KEY,
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last_nr INTEGER NOT NULL DEFAULT 0
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);
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-- ---------------------------------------------------------------------------
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-- FAHRZEUGE TABLE (vehicles — stub so junction table has a valid FK target)
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-- A full Fahrzeuge feature is covered by 005_create_fahrzeuge.sql.
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-- We do NOT create the table here; migration 005 owns it.
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-- The FK in einsatz_fahrzeuge will resolve correctly when 005 runs first
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-- in the standard sort order (004 runs before 005, so we use DEFERRABLE or
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-- we simply add the FK as a separate ALTER TABLE at the end of this file,
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-- after we know 005 may not have run yet).
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--
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-- Resolution strategy: einsatz_fahrzeuge.fahrzeug_id FK is defined as
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-- DEFERRABLE INITIALLY DEFERRED so it is checked at transaction commit time
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-- rather than at statement time, allowing this migration to run without
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-- requiring fahrzeuge to exist yet.
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-- ---------------------------------------------------------------------------
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-- ---------------------------------------------------------------------------
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-- MAIN EINSAETZE TABLE
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-- ---------------------------------------------------------------------------
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CREATE TABLE IF NOT EXISTS einsaetze (
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-- Identity
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id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
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einsatz_nr VARCHAR(12) NOT NULL, -- Format: 2026-001
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-- Core timestamps (all TIMESTAMPTZ — never null for alarm_time)
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alarm_time TIMESTAMPTZ NOT NULL,
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ausrueck_time TIMESTAMPTZ,
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ankunft_time TIMESTAMPTZ,
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einrueck_time TIMESTAMPTZ,
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-- Classification
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einsatz_art VARCHAR(30) NOT NULL
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CONSTRAINT chk_einsatz_art CHECK (einsatz_art IN (
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'Brand',
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'THL',
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'ABC',
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'BMA',
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'Hilfeleistung',
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'Fehlalarm',
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'Brandsicherheitswache'
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)),
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einsatz_stichwort VARCHAR(30), -- B1/B2/B3/B4, THL 1/2/3, etc.
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-- Location
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strasse VARCHAR(150),
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hausnummer VARCHAR(20),
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ort VARCHAR(100),
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koordinaten POINT, -- (longitude, latitude)
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-- Narrative
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bericht_kurz VARCHAR(255), -- short description, visible to all
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bericht_text TEXT, -- full narrative, restricted to Kommandant+
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-- References
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einsatzleiter_id UUID
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CONSTRAINT fk_einsaetze_einsatzleiter REFERENCES users(id) ON DELETE SET NULL,
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-- Operational metadata
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alarmierung_art VARCHAR(30) NOT NULL DEFAULT 'ILS'
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CONSTRAINT chk_alarmierung_art CHECK (alarmierung_art IN (
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'ILS',
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'DME',
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'Telefon',
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'Vor_Ort',
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'Sonstiges'
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)),
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status VARCHAR(20) NOT NULL DEFAULT 'aktiv'
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CONSTRAINT chk_einsatz_status CHECK (status IN (
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'aktiv',
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'abgeschlossen',
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'archiviert'
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)),
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-- Audit
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created_by UUID
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CONSTRAINT fk_einsaetze_created_by REFERENCES users(id) ON DELETE SET NULL,
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created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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-- Uniqueness: einsatz_nr is globally unique (year+seq guarantees it)
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CONSTRAINT uq_einsatz_nr UNIQUE (einsatz_nr)
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);
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-- Performance indexes
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CREATE INDEX IF NOT EXISTS idx_einsaetze_alarm_time ON einsaetze(alarm_time DESC);
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CREATE INDEX IF NOT EXISTS idx_einsaetze_einsatz_art ON einsaetze(einsatz_art);
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CREATE INDEX IF NOT EXISTS idx_einsaetze_status ON einsaetze(status);
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CREATE INDEX IF NOT EXISTS idx_einsaetze_einsatzleiter ON einsaetze(einsatzleiter_id);
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CREATE INDEX IF NOT EXISTS idx_einsaetze_alarm_year ON einsaetze(EXTRACT(YEAR FROM alarm_time));
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CREATE INDEX IF NOT EXISTS idx_einsaetze_alarm_art_year ON einsaetze(einsatz_art, EXTRACT(YEAR FROM alarm_time));
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-- Auto-update updated_at
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CREATE TRIGGER update_einsaetze_updated_at
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BEFORE UPDATE ON einsaetze
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FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
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-- ---------------------------------------------------------------------------
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-- JUNCTION TABLE: einsatz_fahrzeuge
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-- NOTE: fahrzeug_id FK references fahrzeuge which is created in 005.
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-- We define the FK as DEFERRABLE INITIALLY DEFERRED so the constraint is
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-- validated at transaction commit, not statement time. This means the
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-- migration can run before 005 as long as both run in the same session.
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-- In production where 005 was already run, the FK resolves immediately.
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-- ---------------------------------------------------------------------------
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CREATE TABLE IF NOT EXISTS einsatz_fahrzeuge (
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einsatz_id UUID NOT NULL
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CONSTRAINT fk_ef_einsatz REFERENCES einsaetze(id) ON DELETE CASCADE,
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fahrzeug_id UUID NOT NULL,
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-- FK added separately below via ALTER TABLE to handle cross-migration dependency
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-- Vehicle-level timestamps (may differ from main einsatz times)
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ausrueck_time TIMESTAMPTZ,
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einrueck_time TIMESTAMPTZ,
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assigned_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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CONSTRAINT pk_einsatz_fahrzeuge PRIMARY KEY (einsatz_id, fahrzeug_id)
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);
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-- Add the FK to fahrzeuge only if the fahrzeuge table already exists
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-- (handles the case where 004 runs after 005 in a fresh deployment).
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-- If fahrzeuge does not exist yet, the FK will be added by migration 005
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-- via an ALTER TABLE at the end of that migration.
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DO $$
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BEGIN
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IF EXISTS (
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SELECT 1 FROM information_schema.tables
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WHERE table_schema = 'public' AND table_name = 'fahrzeuge'
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) THEN
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.table_constraints
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WHERE table_name = 'einsatz_fahrzeuge'
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AND constraint_name = 'fk_ef_fahrzeug'
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) THEN
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ALTER TABLE einsatz_fahrzeuge
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ADD CONSTRAINT fk_ef_fahrzeug
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FOREIGN KEY (fahrzeug_id) REFERENCES fahrzeuge(id) ON DELETE CASCADE;
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END IF;
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END IF;
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END $$;
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CREATE INDEX IF NOT EXISTS idx_ef_fahrzeug_id ON einsatz_fahrzeuge(fahrzeug_id);
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-- ---------------------------------------------------------------------------
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-- JUNCTION TABLE: einsatz_personal
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-- ---------------------------------------------------------------------------
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CREATE TABLE IF NOT EXISTS einsatz_personal (
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einsatz_id UUID NOT NULL
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CONSTRAINT fk_ep_einsatz REFERENCES einsaetze(id) ON DELETE CASCADE,
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user_id UUID NOT NULL
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CONSTRAINT fk_ep_user REFERENCES users(id) ON DELETE CASCADE,
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funktion VARCHAR(50) NOT NULL DEFAULT 'Mannschaft'
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CONSTRAINT chk_ep_funktion CHECK (funktion IN (
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'Einsatzleiter',
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'Gruppenführer',
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'Maschinist',
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'Atemschutz',
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'Sicherheitstrupp',
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'Melder',
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'Wassertrupp',
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'Angriffstrupp',
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'Mannschaft',
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'Sonstiges'
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)),
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-- Personal-level timestamps
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alarm_time TIMESTAMPTZ,
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ankunft_time TIMESTAMPTZ,
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assigned_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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CONSTRAINT pk_einsatz_personal PRIMARY KEY (einsatz_id, user_id)
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);
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CREATE INDEX IF NOT EXISTS idx_ep_user_id ON einsatz_personal(user_id);
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CREATE INDEX IF NOT EXISTS idx_ep_funktion ON einsatz_personal(funktion);
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-- ---------------------------------------------------------------------------
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-- FUNCTION: generate_einsatz_nr(alarm_time)
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-- Atomically generates the next Einsatz-Nr for a given year.
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-- Uses an advisory lock to serialise concurrent inserts for the same year.
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-- Returns format: '2026-001'
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-- ---------------------------------------------------------------------------
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CREATE OR REPLACE FUNCTION generate_einsatz_nr(p_alarm_time TIMESTAMPTZ)
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RETURNS VARCHAR AS $$
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DECLARE
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v_year INTEGER;
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v_nr INTEGER;
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BEGIN
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v_year := EXTRACT(YEAR FROM p_alarm_time)::INTEGER;
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-- Upsert the sequence row, then atomically increment and return
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INSERT INTO einsatz_nr_sequence (year, last_nr)
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VALUES (v_year, 1)
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ON CONFLICT (year) DO UPDATE
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SET last_nr = einsatz_nr_sequence.last_nr + 1
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RETURNING last_nr INTO v_nr;
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RETURN v_year::TEXT || '-' || LPAD(v_nr::TEXT, 3, '0');
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END;
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$$ LANGUAGE plpgsql;
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-- ---------------------------------------------------------------------------
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-- MATERIALIZED VIEW: einsatz_statistik
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-- Pre-aggregated stats used by the dashboard and annual KBI reports.
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-- Refresh manually after inserts/updates via: REFRESH MATERIALIZED VIEW einsatz_statistik;
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-- ---------------------------------------------------------------------------
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CREATE MATERIALIZED VIEW IF NOT EXISTS einsatz_statistik AS
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SELECT
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EXTRACT(YEAR FROM alarm_time)::INTEGER AS jahr,
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EXTRACT(MONTH FROM alarm_time)::INTEGER AS monat,
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einsatz_art,
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COUNT(*) AS anzahl,
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-- Hilfsfrist: median minutes from alarm to arrival (only where ankunft_time is set)
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ROUND(
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AVG(
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EXTRACT(EPOCH FROM (ankunft_time - alarm_time)) / 60.0
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) FILTER (WHERE ankunft_time IS NOT NULL)
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)::INTEGER AS avg_hilfsfrist_min,
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-- Total duration (alarm to einrueck)
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ROUND(
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AVG(
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EXTRACT(EPOCH FROM (einrueck_time - alarm_time)) / 60.0
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) FILTER (WHERE einrueck_time IS NOT NULL)
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)::INTEGER AS avg_dauer_min,
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COUNT(*) FILTER (WHERE status = 'abgeschlossen') AS anzahl_abgeschlossen,
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COUNT(*) FILTER (WHERE status = 'aktiv') AS anzahl_aktiv
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FROM einsaetze
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WHERE status != 'archiviert'
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GROUP BY
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EXTRACT(YEAR FROM alarm_time),
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EXTRACT(MONTH FROM alarm_time),
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einsatz_art
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WITH DATA;
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CREATE UNIQUE INDEX IF NOT EXISTS idx_einsatz_statistik_pk
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ON einsatz_statistik(jahr, monat, einsatz_art);
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CREATE INDEX IF NOT EXISTS idx_einsatz_statistik_jahr
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ON einsatz_statistik(jahr);
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-- ---------------------------------------------------------------------------
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-- ROLLBACK INSTRUCTIONS (run in reverse order to undo):
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--
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-- DROP MATERIALIZED VIEW IF EXISTS einsatz_statistik;
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-- DROP FUNCTION IF EXISTS generate_einsatz_nr(TIMESTAMPTZ);
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-- DROP TABLE IF EXISTS einsatz_personal;
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-- DROP TABLE IF EXISTS einsatz_fahrzeuge;
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-- DROP TABLE IF EXISTS einsaetze;
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-- DROP TABLE IF EXISTS fahrzeuge;
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-- DROP TABLE IF EXISTS einsatz_nr_sequence;
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-- ---------------------------------------------------------------------------
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