-- ── Base data ─────────────────────────────────────────────────────────────────
-- Imported from Kaikki on first run. Never mutated after import.

CREATE TABLE IF NOT EXISTS entries (
  id          INTEGER PRIMARY KEY,
  headword    TEXT    NOT NULL,
  language    TEXT    NOT NULL,
  pos         TEXT    NOT NULL,
  sense_index INTEGER NOT NULL DEFAULT 0,
  gloss       TEXT,
  examples    TEXT    NOT NULL DEFAULT '[]', -- JSON array of strings
  source      TEXT    NOT NULL DEFAULT 'kaikki',
  UNIQUE (headword, language, pos, sense_index)
);

CREATE TABLE IF NOT EXISTS translations (
  id          INTEGER PRIMARY KEY,
  entry_id    INTEGER NOT NULL REFERENCES entries(id),
  target_lang TEXT    NOT NULL,
  word        TEXT    NOT NULL,
  sense_hint  TEXT,
  source      TEXT    NOT NULL DEFAULT 'kaikki',
  UNIQUE (entry_id, target_lang, word)
);

-- ── Status tracking ───────────────────────────────────────────────────────────
-- One row per entry per model per stage. Drives resumability.
-- Sentinel rows use entry_id = 0 for one-time pipeline steps.
-- stage:  round1 | round2 | tiebreak
-- status: pending | complete | needs_review | flagged

CREATE TABLE IF NOT EXISTS run_status (
  id         INTEGER PRIMARY KEY,
  entry_id   INTEGER 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 (entry_id, model_name, stage)
);

-- ── Round 1 output ────────────────────────────────────────────────────────────
-- Written atomically per entry per model.
-- Unique constraints enforce one model one vote.

CREATE TABLE IF NOT EXISTS model_entry_cefr_votes (
  id         INTEGER PRIMARY KEY,
  entry_id   INTEGER NOT NULL REFERENCES entries(id),
  model_name TEXT    NOT NULL,
  cefr_level TEXT    NOT NULL,
  UNIQUE (entry_id, model_name)
);

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

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

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

CREATE TABLE IF NOT EXISTS generated_translations (
  id          INTEGER PRIMARY KEY,
  entry_id    INTEGER NOT NULL REFERENCES entries(id),
  model_name  TEXT    NOT NULL,
  target_lang TEXT    NOT NULL,
  word        TEXT    NOT NULL,
  UNIQUE (entry_id, model_name, target_lang)
);

-- ── 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 translation_candidate_votes (
  id             INTEGER PRIMARY KEY,
  translation_id INTEGER NOT NULL REFERENCES generated_translations(id),
  model_name     TEXT    NOT NULL,
  UNIQUE (translation_id, model_name)
);

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

CREATE TABLE IF NOT EXISTS resolved_entry_cefr (
  id         INTEGER PRIMARY KEY,
  entry_id   INTEGER NOT NULL REFERENCES entries(id),
  cefr_level TEXT    NOT NULL,
  difficulty TEXT    NOT NULL,
  UNIQUE (entry_id)
);

CREATE TABLE IF NOT EXISTS resolved_translation_cefr (
  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,
  entry_id   INTEGER NOT NULL REFERENCES entries(id),
  text       TEXT    NOT NULL,
  source     TEXT    NOT NULL,
  UNIQUE (entry_id)
);

CREATE TABLE IF NOT EXISTS resolved_examples (
  id         INTEGER PRIMARY KEY,
  entry_id   INTEGER NOT NULL REFERENCES entries(id),
  text       TEXT    NOT NULL,
  source     TEXT    NOT NULL
);

CREATE TABLE IF NOT EXISTS resolved_generated_translations (
  id          INTEGER PRIMARY KEY,
  entry_id    INTEGER NOT NULL REFERENCES entries(id),
  target_lang TEXT    NOT NULL,
  word        TEXT    NOT NULL,
  source      TEXT    NOT NULL,
  UNIQUE (entry_id, target_lang)
);