package postgres

import (
	"context"
	"database/sql"
	"git.aiterp.net/rpdata/api/database/postgres/psqlcore"
	"git.aiterp.net/rpdata/api/internal/generate"
	"git.aiterp.net/rpdata/api/models"
)

type commentRepository struct {
	insertWithIDs bool
	db            *sql.DB
}

func (r *commentRepository) Find(ctx context.Context, id string) (*models.Comment, error) {
	comment, err := psqlcore.New(r.db).SelectComment(ctx, id)
	if err != nil {
		return nil, err
	}

	return r.comment(comment), nil
}

func (r *commentRepository) List(ctx context.Context, filter models.CommentFilter) ([]*models.Comment, error) {
	params := psqlcore.SelectCommentsParams{
		ChapterID: "",
		LimitSize: 0,
	}
	if filter.ChapterID != nil {
		params.ChapterID = *filter.ChapterID
	}
	if filter.Limit > 0 {
		params.LimitSize = int32(filter.Limit)
	}

	comments, err := psqlcore.New(r.db).SelectComments(ctx, params)
	if err != nil {
		return nil, err
	}

	return r.comments(comments), nil
}

func (r *commentRepository) Insert(ctx context.Context, comment models.Comment) (*models.Comment, error) {
	if !r.insertWithIDs || len(comment.ID) < 8 {
		comment.ID = generate.CommentID()
	}

	err := psqlcore.New(r.db).InsertComment(ctx, psqlcore.InsertCommentParams{
		ID:            comment.ID,
		ChapterID:     comment.ChapterID,
		CharacterID:   comment.CharacterID,
		Subject:       comment.Subject,
		Author:        comment.Author,
		CharacterName: comment.CharacterName,
		Source:        comment.Source,
		CreatedDate:   comment.CreatedDate.UTC(),
		FictionalDate: comment.FictionalDate.UTC(),
		EditedDate:    comment.EditedDate.UTC(),
	})
	if err != nil {
		return nil, err
	}

	return &comment, nil
}

func (r *commentRepository) Update(ctx context.Context, comment models.Comment, update models.CommentUpdate) (*models.Comment, error) {
	comment.ApplyUpdate(update)

	err := psqlcore.New(r.db).UpdateComment(ctx, psqlcore.UpdateCommentParams{
		Subject:       comment.Subject,
		Source:        comment.Source,
		FictionalDate: comment.FictionalDate.UTC(),
		EditedDate:    comment.EditedDate.UTC(),
		CharacterName: comment.CharacterName,
		CharacterID:   comment.CharacterID,
		ID:            comment.ID,
	})
	if err != nil {
		return nil, err
	}

	return &comment, nil
}

func (r *commentRepository) Delete(ctx context.Context, comment models.Comment) error {
	return psqlcore.New(r.db).DeleteComment(ctx, comment.ID)
}

func (r *commentRepository) comment(comment psqlcore.StoryComment) *models.Comment {
	return &models.Comment{
		ID:            comment.ID,
		ChapterID:     comment.ChapterID,
		Subject:       comment.Subject,
		Author:        comment.Author,
		CharacterName: comment.CharacterName,
		CharacterID:   comment.CharacterID,
		FictionalDate: comment.FictionalDate,
		CreatedDate:   comment.CreatedDate,
		EditedDate:    comment.EditedDate,
		Source:        comment.Source,
	}
}

func (r *commentRepository) comments(comments []psqlcore.StoryComment) []*models.Comment {
	results := make([]*models.Comment, 0, len(comments))
	for _, comment := range comments {
		results = append(results, r.comment(comment))
	}

	return results
}