-- ── Base data ─────────────────────────────────────────────────────────────────
-- Imported from stage 2 JSON on first run. Never mutated after import.

CREATE TABLE IF NOT EXISTS synsets (
  source_id TEXT PRIMARY KEY,
  pos       TEXT NOT NULL
);

CREATE TABLE IF NOT EXISTS translations (
  id        INTEGER PRIMARY KEY,
  source_id TEXT    NOT NULL REFERENCES synsets(source_id),
  language  TEXT    NOT NULL,
  word      TEXT    NOT NULL,
  UNIQUE (source_id, language, word)
);

CREATE TABLE IF NOT EXISTS glosses (
  id        INTEGER PRIMARY KEY,
  source_id TEXT    NOT NULL REFERENCES synsets(source_id),
  language  TEXT    NOT NULL,
  text      TEXT    NOT NULL
);

CREATE TABLE IF NOT EXISTS examples (
  id        INTEGER PRIMARY KEY,
  source_id TEXT    NOT NULL REFERENCES synsets(source_id),
  language  TEXT    NOT NULL,
  text      TEXT    NOT NULL,
  source    TEXT    NOT NULL
);

CREATE TABLE IF NOT EXISTS cefr_source_votes (
  id             INTEGER PRIMARY KEY,
  translation_id INTEGER NOT NULL REFERENCES translations(id),
  cefr_level     TEXT    NOT NULL,
  UNIQUE (translation_id)
);

-- ── Status tracking ───────────────────────────────────────────────────────────
-- One row per synset per model per stage. Drives resumability.
-- stage:  round1 | round2 | tiebreak
-- status: pending | complete | needs_review | flagged

CREATE TABLE IF NOT EXISTS run_status (
  id         INTEGER PRIMARY KEY,
  source_id  TEXT    NOT NULL,
  model_name TEXT    NOT NULL,
  stage      TEXT    NOT NULL,
  status     TEXT    NOT NULL,
  created_at TEXT    NOT NULL DEFAULT (datetime('now')),
  updated_at TEXT    NOT NULL DEFAULT (datetime('now')),
  UNIQUE (source_id, model_name, stage)
);

-- ── Round 1 output ────────────────────────────────────────────────────────────
-- One row per translation/language per model. Written atomically per record.
-- Unique constraints enforce one model one vote.

CREATE TABLE IF NOT EXISTS model_cefr_votes (
  id             INTEGER PRIMARY KEY,
  translation_id INTEGER NOT NULL REFERENCES translations(id),
  model_name     TEXT    NOT NULL,
  cefr_level     TEXT    NOT NULL,
  UNIQUE (translation_id, model_name)
);

CREATE TABLE IF NOT EXISTS generated_glosses (
  id         INTEGER PRIMARY KEY,
  source_id  TEXT    NOT NULL REFERENCES synsets(source_id),
  model_name TEXT    NOT NULL,
  language   TEXT    NOT NULL,
  text       TEXT    NOT NULL,
  UNIQUE (source_id, model_name, language)
);

CREATE TABLE IF NOT EXISTS generated_examples (
  id         INTEGER PRIMARY KEY,
  source_id  TEXT    NOT NULL REFERENCES synsets(source_id),
  model_name TEXT    NOT NULL,
  language   TEXT    NOT NULL,
  text       TEXT    NOT NULL,
  UNIQUE (source_id, model_name, language)
);

CREATE TABLE IF NOT EXISTS generated_descriptions (
  id         INTEGER PRIMARY KEY,
  source_id  TEXT    NOT NULL REFERENCES synsets(source_id),
  model_name TEXT    NOT NULL,
  language   TEXT    NOT NULL,
  text       TEXT    NOT NULL,
  UNIQUE (source_id, model_name, language)
);

-- ── Round 2 output ────────────────────────────────────────────────────────────
-- Each row represents one model voting for one candidate.
-- The candidate with the most votes wins in merge.

CREATE TABLE IF NOT EXISTS gloss_candidate_votes (
  id         INTEGER PRIMARY KEY,
  gloss_id   INTEGER NOT NULL REFERENCES generated_glosses(id),
  model_name TEXT    NOT NULL,
  UNIQUE (gloss_id, model_name)
);

CREATE TABLE IF NOT EXISTS example_candidate_votes (
  id         INTEGER PRIMARY KEY,
  example_id INTEGER NOT NULL REFERENCES generated_examples(id),
  model_name TEXT    NOT NULL,
  UNIQUE (example_id, model_name)
);

CREATE TABLE IF NOT EXISTS description_candidate_votes (
  id             INTEGER PRIMARY KEY,
  description_id INTEGER NOT NULL REFERENCES generated_descriptions(id),
  model_name     TEXT    NOT NULL,
  UNIQUE (description_id, model_name)
);

-- ── Resolved output ───────────────────────────────────────────────────────────
-- Written by merge. Never updated after writing.
-- Only fully resolved records are written here — no nulls, no flags.
-- Absence of a row means unresolved. Flagged status tracked in run_status.
-- source: omw | cefr | model_name

CREATE TABLE IF NOT EXISTS resolved_translations (
  id             INTEGER PRIMARY KEY,
  translation_id INTEGER NOT NULL REFERENCES translations(id),
  cefr_level     TEXT    NOT NULL,
  difficulty     TEXT    NOT NULL,
  UNIQUE (translation_id)
);

CREATE TABLE IF NOT EXISTS resolved_glosses (
  id        INTEGER PRIMARY KEY,
  source_id TEXT    NOT NULL REFERENCES synsets(source_id),
  language  TEXT    NOT NULL,
  text      TEXT    NOT NULL,
  source    TEXT    NOT NULL,
  UNIQUE (source_id, language)
);

CREATE TABLE IF NOT EXISTS resolved_examples (
  id        INTEGER PRIMARY KEY,
  source_id TEXT    NOT NULL REFERENCES synsets(source_id),
  language  TEXT    NOT NULL,
  text      TEXT    NOT NULL,
  source    TEXT    NOT NULL
);

CREATE TABLE IF NOT EXISTS resolved_descriptions (
  id        INTEGER PRIMARY KEY,
  source_id TEXT    NOT NULL REFERENCES synsets(source_id),
  language  TEXT    NOT NULL,
  text      TEXT    NOT NULL,
  source    TEXT    NOT NULL,
  UNIQUE (source_id, language)
);