package config

import (
	"bytes"
	"errors"
	"strings"

	"github.com/pelletier/go-toml/v2"
)

func decodeTyped(file string, data []byte, idx *keyIndex, pass1 []Problem) (*rawFile, []Problem) {
	var raw rawFile
	dec := toml.NewDecoder(bytes.NewReader(data))
	dec.DisallowUnknownFields()
	err := dec.Decode(&raw)
	if err == nil {
		return &raw, nil
	}
	var missing *toml.StrictMissingError
	if errors.As(err, &missing) {
		if len(pass1) > 0 {
			return nil, nil
		}
		problems := make([]Problem, 0, len(missing.Errors))
		for _, e := range missing.Errors {
			row, col := e.Position()
			problems = append(problems, Problem{File: file, Line: row, Key: idx.keyAt(row, col), Reason: reasonUnknownKey})
		}
		return nil, problems
	}
	p := decodeProblem(file, err, idx, true)
	for _, q := range pass1 {
		if p.Key == q.Key || strings.HasPrefix(p.Key, q.Key+".") || strings.HasPrefix(p.Key, q.Key+"[") {
			return nil, nil
		}
	}
	return nil, []Problem{p}
}