package db

import (
	"context"
	"time"

	"lmika.dev/lmika/weiro/models"
	"lmika.dev/lmika/weiro/providers/db/gen/sqlgen"
)

func (db *Provider) SelectPostsOfSite(ctx context.Context, siteID int64, showDeleted bool) ([]*models.Post, error) {
	var filter = ""
	if showDeleted {
		filter = "deleted"
	}

	rows, err := db.queries.SelectPostsOfSite(ctx, sqlgen.SelectPostsOfSiteParams{
		SiteID:     siteID,
		PostFilter: filter,
	})
	if err != nil {
		return nil, err
	}

	posts := make([]*models.Post, len(rows))
	for i, row := range rows {
		posts[i] = dbPostToPost(row)
	}
	return posts, nil
}

func (db *Provider) SelectPost(ctx context.Context, postID int64) (*models.Post, error) {
	row, err := db.queries.SelectPost(ctx, postID)
	if err != nil {
		return nil, err
	}

	return dbPostToPost(row), nil
}

func (db *Provider) SelectPostByGUID(ctx context.Context, guid string) (*models.Post, error) {
	row, err := db.queries.SelectPostByGUID(ctx, guid)
	if err != nil {
		return nil, err
	}

	return dbPostToPost(row), nil
}

func (db *Provider) SavePost(ctx context.Context, post *models.Post) error {
	if post.ID == 0 {
		newID, err := db.queries.InsertPost(ctx, sqlgen.InsertPostParams{
			SiteID:      post.SiteID,
			State:       int64(post.State),
			Guid:        post.GUID,
			Title:       post.Title,
			Body:        post.Body,
			Slug:        post.Slug,
			CreatedAt:   timeToInt(post.CreatedAt),
			UpdatedAt:   timeToInt(post.UpdatedAt),
			PublishedAt: timeToInt(post.PublishedAt),
			DeletedAt:   timeToInt(post.DeletedAt),
		})
		if err != nil {
			return err
		}
		post.ID = newID
		return nil
	}

	return db.queries.UpdatePost(ctx, sqlgen.UpdatePostParams{
		ID:          post.ID,
		State:       int64(post.State),
		Title:       post.Title,
		Body:        post.Body,
		Slug:        post.Slug,
		UpdatedAt:   timeToInt(post.UpdatedAt),
		PublishedAt: timeToInt(post.PublishedAt),
		DeletedAt:   timeToInt(post.DeletedAt),
	})
}

func dbPostToPost(row sqlgen.Post) *models.Post {
	return &models.Post{
		ID:          row.ID,
		SiteID:      row.SiteID,
		State:       int(row.State),
		GUID:        row.Guid,
		Title:       row.Title,
		Body:        row.Body,
		Slug:        row.Slug,
		CreatedAt:   time.Unix(row.CreatedAt, 0).UTC(),
		UpdatedAt:   time.Unix(row.UpdatedAt, 0).UTC(),
		PublishedAt: time.Unix(row.PublishedAt, 0).UTC(),
		DeletedAt:   time.Unix(row.DeletedAt, 0).UTC(),
	}
}

func timeToInt(t time.Time) int64 {
	if t.IsZero() {
		return 0
	}
	return t.Unix()
}