CREATE TABLE IF NOT EXISTS companies (
  id TEXT PRIMARY KEY,
  name TEXT NOT NULL,
  code TEXT NOT NULL UNIQUE,
  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE TABLE IF NOT EXISTS production_lines (
  id TEXT PRIMARY KEY,
  company_id TEXT NOT NULL REFERENCES companies(id),
  name TEXT NOT NULL,
  code TEXT NOT NULL,
  device_id TEXT NOT NULL UNIQUE,
  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
  last_seen_at TIMESTAMPTZ,
  UNIQUE (company_id, code)
);

ALTER TABLE production_lines ADD COLUMN IF NOT EXISTS last_seen_at TIMESTAMPTZ;
CREATE INDEX IF NOT EXISTS production_lines_last_seen_at_idx ON production_lines (last_seen_at);

CREATE TABLE IF NOT EXISTS licenses (
  license_id UUID PRIMARY KEY,
  company_id TEXT NOT NULL REFERENCES companies(id),
  production_line_id TEXT NOT NULL REFERENCES production_lines(id),
  device_id TEXT NOT NULL,
  customer TEXT NOT NULL,
  issued_at TIMESTAMPTZ NOT NULL,
  expiry_at TIMESTAMPTZ NOT NULL,
  features TEXT NOT NULL,
  license TEXT NOT NULL,
  status TEXT NOT NULL CHECK (status IN ('active', 'revoked')),
  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
  revoked_at TIMESTAMPTZ,
  revocation_reason TEXT
);

CREATE TABLE IF NOT EXISTS file_records (
  id TEXT PRIMARY KEY,
  file_name TEXT NOT NULL,
  original_file_name TEXT,
  folder TEXT NOT NULL,
  cloud_path TEXT NOT NULL UNIQUE,
  file_id TEXT NOT NULL UNIQUE,
  upload_time TIMESTAMPTZ NOT NULL,
  size_bytes BIGINT NOT NULL
);

ALTER TABLE file_records ADD COLUMN IF NOT EXISTS original_file_name TEXT;

CREATE TABLE IF NOT EXISTS function_configs (
  config_type TEXT PRIMARY KEY,
  parameters JSONB NOT NULL,
  version BIGINT NOT NULL,
  update_time TIMESTAMPTZ NOT NULL
);

CREATE TABLE IF NOT EXISTS panel_inbox (
  file_id TEXT PRIMARY KEY,
  device_id TEXT NOT NULL,
  file_name TEXT NOT NULL,
  media_type TEXT NOT NULL,
  upload_time TIMESTAMPTZ NOT NULL
);

CREATE TABLE IF NOT EXISTS identification_files (
  file_id TEXT PRIMARY KEY,
  device_id TEXT NOT NULL,
  file_name TEXT NOT NULL,
  media_type TEXT NOT NULL,
  upload_time TIMESTAMPTZ NOT NULL,
  size_bytes BIGINT NOT NULL,
  status TEXT NOT NULL CHECK (status IN ('pending', 'processed')),
  processed_at TIMESTAMPTZ,
  expires_at TIMESTAMPTZ
);

CREATE TABLE IF NOT EXISTS identification_feedback (
  device_id TEXT NOT NULL,
  run_id TEXT NOT NULL,
  file_name TEXT NOT NULL,
  status TEXT NOT NULL,
  result SMALLINT,
  update_time TIMESTAMPTZ NOT NULL,
  PRIMARY KEY (device_id, run_id)
);

CREATE TABLE IF NOT EXISTS volume_config_requests (
  device_id TEXT NOT NULL,
  request_id TEXT NOT NULL,
  status TEXT NOT NULL,
  created_at_ms BIGINT NOT NULL,
  expires_at_ms BIGINT NOT NULL,
  config_file_id TEXT,
  config_file_name TEXT,
  uploaded_at_ms BIGINT,
  update_time TIMESTAMPTZ NOT NULL,
  PRIMARY KEY (device_id, request_id)
);

CREATE INDEX IF NOT EXISTS licenses_status_device_expiry_idx ON licenses (status, device_id, expiry_at);
CREATE INDEX IF NOT EXISTS file_records_folder_idx ON file_records (folder);
CREATE INDEX IF NOT EXISTS identification_files_device_upload_idx ON identification_files (device_id, upload_time DESC);
CREATE INDEX IF NOT EXISTS identification_files_expires_idx ON identification_files (expires_at) WHERE expires_at IS NOT NULL;
CREATE INDEX IF NOT EXISTS identification_feedback_device_idx ON identification_feedback (device_id);