-- Migration: Simplify chicken counting to a single upsert table
-- Date: 2026-03-05

CREATE TABLE IF NOT EXISTS chicken_counting (
    id SERIAL PRIMARY KEY,
    date DATE NOT NULL,
    kandang_id INTEGER NOT NULL REFERENCES kandangs(id) ON DELETE CASCADE,
    filename TEXT,
    total_count INTEGER NOT NULL DEFAULT 0,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    UNIQUE(date, kandang_id)
);

CREATE INDEX IF NOT EXISTS idx_chicken_counting_date ON chicken_counting(date);
CREATE INDEX IF NOT EXISTS idx_chicken_counting_kandang_id ON chicken_counting(kandang_id);

-- Auto-update updated_at trigger
CREATE TRIGGER update_chicken_counting_updated_at
    BEFORE UPDATE ON chicken_counting
    FOR EACH ROW
    EXECUTE FUNCTION update_updated_at_column();