package com.android.trisolarisserver.repo.room

import com.android.trisolarisserver.models.room.RoomStay
import org.springframework.data.jpa.repository.JpaRepository
import org.springframework.data.jpa.repository.Query
import org.springframework.data.repository.query.Param
import java.util.UUID

interface RoomStayRepo : JpaRepository<RoomStay, UUID> {
    @Query("""
        select rs.room.id
        from RoomStay rs
        where rs.property.id = :propertyId
          and rs.toAt is null
          and rs.isVoided = false
    """)
    fun findOccupiedRoomIds(@Param("propertyId") propertyId: UUID): List<UUID>

    @Query("""
        select distinct rs.room.id
        from RoomStay rs
        where rs.property.id = :propertyId
          and rs.isVoided = false
          and rs.fromAt < :toAt
          and (rs.toAt is null or rs.toAt > :fromAt)
    """)
    fun findOccupiedRoomIdsBetween(
        @Param("propertyId") propertyId: UUID,
        @Param("fromAt") fromAt: java.time.OffsetDateTime,
        @Param("toAt") toAt: java.time.OffsetDateTime
    ): List<UUID>

    @Query("""
        select distinct rs.room.id
        from RoomStay rs
        where rs.property.id = :propertyId
          and rs.isVoided = false
          and rs.toAt is not null
          and rs.fromAt < :toAt
          and rs.toAt > :fromAt
    """)
    fun findOccupiedRoomIdsBetweenClosed(
        @Param("propertyId") propertyId: UUID,
        @Param("fromAt") fromAt: java.time.OffsetDateTime,
        @Param("toAt") toAt: java.time.OffsetDateTime
    ): List<UUID>

    @Query("""
        select rs.room.id as roomId,
               rs.fromAt as fromAt,
               b.expectedCheckoutAt as expectedCheckoutAt
        from RoomStay rs
        join rs.booking b
        where rs.property.id = :propertyId
          and rs.isVoided = false
          and rs.toAt is null
          and rs.fromAt < :toAt
    """)
    fun findActiveForecastRows(
        @Param("propertyId") propertyId: UUID,
        @Param("toAt") toAt: java.time.OffsetDateTime
    ): List<ActiveRoomStayForecastRow>

    @Query("""
        select rs
        from RoomStay rs
        where rs.booking.id = :bookingId
          and rs.toAt is null
          and rs.isVoided = false
    """)
    fun findActiveByBookingId(@Param("bookingId") bookingId: UUID): List<RoomStay>

    @Query("""
        select rs
        from RoomStay rs
        where rs.booking.id = :bookingId
          and rs.isVoided = false
    """)
    fun findByBookingId(@Param("bookingId") bookingId: UUID): List<RoomStay>

    @Query("""
        select rs
        from RoomStay rs
        join fetch rs.room r
        where rs.booking.id = :bookingId
          and rs.isVoided = false
    """)
    fun findByBookingIdWithRoom(@Param("bookingId") bookingId: UUID): List<RoomStay>

    @Query("""
        select rs
        from RoomStay rs
        where rs.booking.id in :bookingIds
          and rs.isVoided = false
    """)
    fun findByBookingIdIn(@Param("bookingIds") bookingIds: List<UUID>): List<RoomStay>

    @Query("""
        select rs.room.id
        from RoomStay rs
        where rs.property.id = :propertyId
          and rs.room.id in :roomIds
          and rs.toAt is null
          and rs.isVoided = false
    """)
    fun findActiveRoomIds(
        @Param("propertyId") propertyId: UUID,
        @Param("roomIds") roomIds: List<UUID>
    ): List<UUID>

    @Query("""
        select case when count(rs) > 0 then true else false end
        from RoomStay rs
        where rs.property.id = :propertyId
          and rs.room.id = :roomId
          and rs.isVoided = false
          and rs.fromAt < :toAt
          and (rs.toAt is null or rs.toAt > :fromAt)
    """)
    fun existsOverlap(
        @Param("propertyId") propertyId: UUID,
        @Param("roomId") roomId: UUID,
        @Param("fromAt") fromAt: java.time.OffsetDateTime,
        @Param("toAt") toAt: java.time.OffsetDateTime
    ): Boolean

    @Query("""
        select rs
        from RoomStay rs
        join fetch rs.room r
        join fetch r.roomType rt
        join fetch rs.booking b
        left join fetch b.primaryGuest g
        where rs.property.id = :propertyId
          and rs.toAt is null
          and rs.isVoided = false
        order by r.roomNumber
    """)
    fun findActiveByPropertyIdWithDetails(@Param("propertyId") propertyId: UUID): List<RoomStay>

    @Query("""
        select case when count(rs) > 0 then true else false end
        from RoomStay rs
        where rs.room.id = :roomId
    """)
    fun existsByRoomId(@Param("roomId") roomId: UUID): Boolean

    @Query("""
        select rs.booking.id as bookingId, r.roomNumber as roomNumber
        from RoomStay rs
        join rs.room r
        where rs.booking.id in :bookingIds
          and rs.toAt is null
          and rs.isVoided = false
    """)
    fun findActiveRoomNumbersByBookingIds(
        @Param("bookingIds") bookingIds: List<UUID>
    ): List<BookingRoomNumberRow>

    @Query(
        """
        select rs
        from RoomStay rs
        where rs.id = :roomStayId
          and rs.booking.id = :bookingId
          and rs.isVoided = false
        """
    )
    fun findByIdAndBookingId(
        @Param("roomStayId") roomStayId: UUID,
        @Param("bookingId") bookingId: UUID
    ): RoomStay?

    @Query(
        """
        select count(distinct rs.room.id)
        from RoomStay rs
        where rs.property.id = :propertyId
          and rs.room.roomType.id = :roomTypeId
          and rs.isVoided = false
          and rs.fromAt < :toAt
          and (rs.toAt is null or rs.toAt > :fromAt)
        """
    )
    fun countOccupiedByTypeInRange(
        @Param("propertyId") propertyId: UUID,
        @Param("roomTypeId") roomTypeId: UUID,
        @Param("fromAt") fromAt: java.time.OffsetDateTime,
        @Param("toAt") toAt: java.time.OffsetDateTime
    ): Long
}

interface BookingRoomNumberRow {
    val bookingId: UUID
    val roomNumber: Int
}

interface ActiveRoomStayForecastRow {
    val roomId: UUID
    val fromAt: java.time.OffsetDateTime
    val expectedCheckoutAt: java.time.OffsetDateTime?
}