package ingest

import (
	"git.smesh.lol/iskradb/lattice"
	"git.smesh.lol/transdb"
)

// GenerateConjugations inserts MorphState 1+ records for a Bverb entry.
// Uses BuildVerbForms from transdb.morph.mx — single source for conjugation tables.
// State 0 (base form) must already be in the lattice. firstEN is the EN record index.
func GenerateConjugations(db *DB, dictForm, verbClass string,
	branch lattice.Branch, branchByte uint8, firstEN uint32) {

	if firstEN == lattice.NullRec || verbClass == "" {
		return
	}

	forms := transdb.BuildVerbForms(dictForm, verbClass)
	if len(forms) == 0 {
		return
	}

	for state, form := range forms {
		if form == "" || form == dictForm || state == 0 {
			continue
		}
		// Insert at coord with morphological axis set — enables direct coord lookup.
		// DataFile MorphState redundantly encodes state for post-lookup applyMorphEN.
		coord := transdb.PackCoord(0, 0, 0, uint64(state), 0, 0, 0)
		key := transdb.MakeKey(transdb.LangJA, coord, form)
		if db.Tree.LookupRecIdx(branch, key) != lattice.NullRec {
			continue
		}
		var rec lattice.Record
		transdb.SetFormOnRecord(&rec, form, &db.StringPool)
		rec.Branch = branchByte
		transdb.SetMorphState(&rec, state)
		newRI := db.Tree.InsertRec(branch, key, rec)
		if r := db.Tree.GetRecord(newRI); r != nil {
			r.Link[0] = firstEN
		}
	}
}