/** Page Data schema + dataset registry for MeMind Health (architecture §8). */

export const HEALTH_OBSERVATIONS_DATASET = Object.freeze({
  name: 'health_observations',
  table: 'health_observations',
  description: 'MeMind Health 个人健康观测记录',
  actions: ['read', 'insert', 'update', 'softDelete'],
  columns: {
    read: [
      'id',
      'observed_at',
      'metric_type',
      'value_num',
      'value_text',
      'unit',
      'context',
      'source',
      'quality_flag',
      'created_at',
    ],
    insert: [
      'observed_at',
      'metric_type',
      'value_num',
      'value_text',
      'unit',
      'context',
      'source',
      'source_ref',
      'time_source',
      'confidence',
      'quality_flag',
      'raw_payload',
    ],
    update: ['observed_at', 'value_num', 'value_text', 'context', 'quality_flag'],
  },
});

export const HEALTH_DOCUMENTS_DATASET = Object.freeze({
  name: 'health_documents',
  table: 'health_documents',
  description: 'MeMind Health 医疗报告归档',
  actions: ['read', 'insert', 'update', 'softDelete'],
  columns: {
    read: ['id', 'doc_type', 'report_date', 'institution', 'title', 'asset_id', 'extraction_status', 'created_at'],
    insert: ['doc_type', 'report_date', 'institution', 'title', 'asset_id', 'ocr_text', 'extracted_metrics', 'extraction_status'],
    update: ['report_date', 'institution', 'title', 'ocr_text', 'extracted_metrics', 'extraction_status'],
  },
});

export const HEALTH_OBSERVATION_DRAFTS_DATASET = Object.freeze({
  name: 'health_observation_drafts',
  table: 'health_observation_drafts',
  description: 'MeMind Health 待确认观测草稿',
  actions: ['read', 'insert', 'update'],
  columns: {
    read: ['id', 'draft_key', 'metric_set', 'extracted', 'validation', 'status', 'channel', 'created_at', 'expires_at', 'committed_at'],
    insert: ['draft_key', 'metric_set', 'extracted', 'validation', 'status', 'channel', 'expires_at'],
    update: ['extracted', 'validation', 'status', 'committed_at'],
  },
});

export const HEALTH_BASELINES_DATASET = Object.freeze({
  name: 'health_baselines',
  table: 'health_baselines',
  description: 'MeMind Health 个人基线（引擎写入）',
  actions: ['read', 'insert', 'update'],
  columns: {
    read: [
      'id',
      'metric_type',
      'context',
      'window_days',
      'computed_at',
      'sample_count',
      'mean_val',
      'std_val',
      'p25_val',
      'p75_val',
      'typical_low',
      'typical_high',
      'maturity',
    ],
    insert: [
      'metric_type',
      'context',
      'window_days',
      'computed_at',
      'sample_count',
      'mean_val',
      'std_val',
      'p25_val',
      'p75_val',
      'typical_low',
      'typical_high',
      'maturity',
    ],
    update: [
      'computed_at',
      'sample_count',
      'mean_val',
      'std_val',
      'p25_val',
      'p75_val',
      'typical_low',
      'typical_high',
      'maturity',
    ],
  },
});

export const HEALTH_EVENTS_DATASET = Object.freeze({
  name: 'health_events',
  table: 'health_events',
  description: 'MeMind Health 偏离与阈值事件',
  actions: ['read', 'insert', 'update'],
  columns: {
    read: [
      'id',
      'event_type',
      'severity',
      'detected_at',
      'rule_id',
      'metrics_involved',
      'evidence_observation_ids',
      'agent_summary',
      'status',
      'created_at',
    ],
    insert: [
      'event_type',
      'severity',
      'detected_at',
      'rule_id',
      'metrics_involved',
      'evidence_observation_ids',
      'agent_summary',
      'status',
    ],
    update: ['severity', 'agent_summary', 'status'],
  },
});

export const HEALTH_PAGE_DATA_DATASETS = Object.freeze([
  HEALTH_OBSERVATIONS_DATASET,
  HEALTH_DOCUMENTS_DATASET,
  HEALTH_OBSERVATION_DRAFTS_DATASET,
  HEALTH_BASELINES_DATASET,
  HEALTH_EVENTS_DATASET,
]);

export const HEALTH_PAGE_DATA_DDL = Object.freeze([
  `CREATE TABLE IF NOT EXISTS health_observations (
    id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    observed_at TIMESTAMPTZ NOT NULL,
    metric_type TEXT NOT NULL,
    value_num NUMERIC(10,2) NULL,
    value_text TEXT NULL,
    unit TEXT NULL,
    context TEXT NULL,
    source TEXT NOT NULL,
    source_ref TEXT NULL,
    time_source TEXT NOT NULL DEFAULT 'user_specified',
    confidence NUMERIC(4,3) NULL,
    quality_flag TEXT NULL,
    raw_payload JSONB NULL,
    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
    deleted_at TIMESTAMPTZ NULL
  )`,
  `CREATE INDEX IF NOT EXISTS idx_health_obs_metric_time
    ON health_observations (metric_type, observed_at DESC)`,
  `CREATE UNIQUE INDEX IF NOT EXISTS uq_health_obs_dedup
    ON health_observations (metric_type, observed_at, source_ref)
    WHERE source_ref IS NOT NULL AND deleted_at IS NULL`,
  `CREATE TABLE IF NOT EXISTS health_documents (
    id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    doc_type TEXT NOT NULL DEFAULT 'other',
    report_date DATE NULL,
    institution TEXT NULL,
    title TEXT NOT NULL,
    asset_id TEXT NULL,
    ocr_text TEXT NULL,
    extracted_metrics JSONB NOT NULL DEFAULT '[]'::jsonb,
    extraction_status TEXT NOT NULL DEFAULT 'pending',
    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
    deleted_at TIMESTAMPTZ NULL
  )`,
  `CREATE TABLE IF NOT EXISTS health_observation_drafts (
    id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    draft_key TEXT NOT NULL UNIQUE,
    metric_set TEXT NOT NULL,
    extracted JSONB NOT NULL,
    validation JSONB NOT NULL,
    status TEXT NOT NULL DEFAULT 'pending',
    channel TEXT NOT NULL,
    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
    expires_at TIMESTAMPTZ NOT NULL,
    committed_at TIMESTAMPTZ NULL
  )`,
  `CREATE TABLE IF NOT EXISTS health_baselines (
    id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    metric_type TEXT NOT NULL,
    context TEXT NOT NULL,
    window_days INT NOT NULL,
    computed_at TIMESTAMPTZ NOT NULL,
    sample_count INT NOT NULL,
    mean_val NUMERIC(10,2) NULL,
    std_val NUMERIC(10,2) NULL,
    p25_val NUMERIC(10,2) NULL,
    p75_val NUMERIC(10,2) NULL,
    typical_low NUMERIC(10,2) NULL,
    typical_high NUMERIC(10,2) NULL,
    maturity TEXT NOT NULL,
    UNIQUE (metric_type, context, window_days)
  )`,
  `CREATE TABLE IF NOT EXISTS health_events (
    id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    event_type TEXT NOT NULL,
    severity TEXT NOT NULL,
    detected_at TIMESTAMPTZ NOT NULL,
    rule_id TEXT NULL,
    metrics_involved JSONB NOT NULL DEFAULT '[]'::jsonb,
    evidence_observation_ids JSONB NOT NULL DEFAULT '[]'::jsonb,
    agent_summary TEXT NULL,
    status TEXT NOT NULL DEFAULT 'open',
    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
  )`,
  `CREATE INDEX IF NOT EXISTS idx_health_events_open
    ON health_events (status, detected_at DESC)`,
]);

/** SQLite test backend (NODE_TEST_CONTEXT) — same columns, portable types. */
export const HEALTH_PAGE_DATA_DDL_SQLITE = Object.freeze([
  `CREATE TABLE IF NOT EXISTS health_observations (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    observed_at TEXT NOT NULL,
    metric_type TEXT NOT NULL,
    value_num REAL NULL,
    value_text TEXT NULL,
    unit TEXT NULL,
    context TEXT NULL,
    source TEXT NOT NULL,
    source_ref TEXT NULL,
    time_source TEXT NOT NULL DEFAULT 'user_specified',
    confidence REAL NULL,
    quality_flag TEXT NULL,
    raw_payload TEXT NULL,
    created_at TEXT NOT NULL DEFAULT (datetime('now', 'localtime')),
    deleted_at TEXT NULL
  )`,
  `CREATE INDEX IF NOT EXISTS idx_health_obs_metric_time
    ON health_observations (metric_type, observed_at)`,
  `CREATE TABLE IF NOT EXISTS health_documents (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    doc_type TEXT NOT NULL DEFAULT 'other',
    report_date TEXT NULL,
    institution TEXT NULL,
    title TEXT NOT NULL,
    asset_id TEXT NULL,
    ocr_text TEXT NULL,
    extracted_metrics TEXT NOT NULL DEFAULT '[]',
    extraction_status TEXT NOT NULL DEFAULT 'pending',
    created_at TEXT NOT NULL DEFAULT (datetime('now', 'localtime')),
    deleted_at TEXT NULL
  )`,
  `CREATE TABLE IF NOT EXISTS health_observation_drafts (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    draft_key TEXT NOT NULL UNIQUE,
    metric_set TEXT NOT NULL,
    extracted TEXT NOT NULL,
    validation TEXT NOT NULL,
    status TEXT NOT NULL DEFAULT 'pending',
    channel TEXT NOT NULL,
    created_at TEXT NOT NULL DEFAULT (datetime('now', 'localtime')),
    expires_at TEXT NOT NULL,
    committed_at TEXT NULL
  )`,
  `CREATE TABLE IF NOT EXISTS health_baselines (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    metric_type TEXT NOT NULL,
    context TEXT NOT NULL,
    window_days INTEGER NOT NULL,
    computed_at TEXT NOT NULL,
    sample_count INTEGER NOT NULL,
    mean_val REAL NULL,
    std_val REAL NULL,
    p25_val REAL NULL,
    p75_val REAL NULL,
    typical_low REAL NULL,
    typical_high REAL NULL,
    maturity TEXT NOT NULL,
    UNIQUE (metric_type, context, window_days)
  )`,
  `CREATE TABLE IF NOT EXISTS health_events (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    event_type TEXT NOT NULL,
    severity TEXT NOT NULL,
    detected_at TEXT NOT NULL,
    rule_id TEXT NULL,
    metrics_involved TEXT NOT NULL DEFAULT '[]',
    evidence_observation_ids TEXT NOT NULL DEFAULT '[]',
    agent_summary TEXT NULL,
    status TEXT NOT NULL DEFAULT 'open',
    created_at TEXT NOT NULL DEFAULT (datetime('now', 'localtime'))
  )`,
  `CREATE INDEX IF NOT EXISTS idx_health_events_open
    ON health_events (status, detected_at)`,
]);

export function healthPageDataDdlForBackend(backend = 'postgres') {
  return String(backend).toLowerCase() === 'sqlite'
    ? HEALTH_PAGE_DATA_DDL_SQLITE
    : HEALTH_PAGE_DATA_DDL;
}