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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| package plus.maa.backend.service | ||
|
|
||
| import org.springframework.stereotype.Service | ||
| import plus.maa.backend.repository.RatingRepository | ||
| import plus.maa.backend.repository.entity.Rating | ||
| import plus.maa.backend.service.model.RatingType | ||
| import java.time.LocalDateTime | ||
|
|
||
| @Service | ||
| class RatingService(private val ratingRepository: RatingRepository) { | ||
| /** | ||
| * Update rating of target object | ||
| * | ||
| * @param keyType Target key type | ||
| * @param key Key | ||
| * @param raterId Rater's ID | ||
| * @param ratingType Target rating type | ||
| * @return A pair, previous one and the target one. | ||
| */ | ||
| fun rate(keyType: Rating.KeyType, key: String, raterId: String, ratingType: RatingType): Pair<Rating, Rating> { | ||
| val rating = ratingRepository.findByTypeAndKeyAndUserId( | ||
| keyType, | ||
| key, | ||
| raterId, | ||
| ) ?: Rating( | ||
| null, | ||
| keyType, | ||
| key, | ||
| raterId, | ||
| RatingType.NONE, | ||
| LocalDateTime.now(), | ||
| ) | ||
|
|
||
| if (ratingType == rating.rating) return rating to rating | ||
|
|
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| val prev = rating.copy() | ||
| rating.rating = ratingType | ||
| rating.rateTime = LocalDateTime.now() | ||
| ratingRepository.save(rating) | ||
| return prev to rating | ||
| } | ||
|
|
||
| /** | ||
| * Calculate like/dislike counts from rating change. | ||
| * @param ratingChange Pair of previous rating and current rating | ||
| * @return Pair of like count change and dislike count change | ||
| */ | ||
| fun calcLikeChange(ratingChange: Pair<Rating, Rating>): Pair<Long, Long> { | ||
| val (prev, next) = ratingChange | ||
| val likeCountChange = next.rating.countLike() - prev.rating.countLike() | ||
| val dislikeCountChange = next.rating.countDislike() - prev.rating.countDislike() | ||
| return likeCountChange to dislikeCountChange | ||
| } | ||
|
|
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| fun rateComment(commentId: String, raterId: String, ratingType: RatingType): Pair<Rating, Rating> = | ||
| rate(Rating.KeyType.COMMENT, commentId, raterId, ratingType) | ||
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| fun rateCopilot(copilotId: Long, raterId: String, ratingType: RatingType): Pair<Rating, Rating> = | ||
| rate(Rating.KeyType.COPILOT, copilotId.toString(), raterId, ratingType) | ||
|
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| fun findPersonalRatingOfCopilot(raterId: String, copilotId: Long) = | ||
| ratingRepository.findByTypeAndKeyAndUserId(Rating.KeyType.COPILOT, copilotId.toString(), raterId) | ||
| } |