SET ANSI_NULLS ON;
GO
SET QUOTED_IDENTIFIER ON;
GO

CREATE OR ALTER PROCEDURE dbo.WordCompanion_SceneLinks_Update
    @SceneID int,
    @UserID int,
    @CharacterIds nvarchar(max) = NULL,
    @AssetIds nvarchar(max) = NULL,
    @LocationIds nvarchar(max) = NULL
AS
BEGIN
    SET NOCOUNT ON;

    DECLARE @ProjectID int;
    SELECT @ProjectID = b.ProjectID
    FROM dbo.Scenes s
    INNER JOIN dbo.Chapters c ON c.ChapterID = s.ChapterID
    INNER JOIN dbo.Books b ON b.BookID = c.BookID
    INNER JOIN dbo.Projects p ON p.ProjectID = b.ProjectID
    INNER JOIN dbo.ProjectUserAccess pua ON pua.ProjectID = p.ProjectID
    WHERE s.SceneID = @SceneID
        AND s.IsArchived = 0
        AND c.IsArchived = 0
        AND b.IsArchived = 0
        AND p.IsArchived = 0
        AND pua.UserID = @UserID
        AND pua.IsActive = 1;

    IF @ProjectID IS NULL
        RETURN;

    DECLARE @Characters TABLE (ID int PRIMARY KEY);
    DECLARE @Assets TABLE (ID int PRIMARY KEY);
    DECLARE @Locations TABLE (ID int PRIMARY KEY);

    INSERT @Characters (ID)
    SELECT DISTINCT TRY_CONVERT(int, LTRIM(RTRIM(value)))
    FROM STRING_SPLIT(ISNULL(@CharacterIds, N''), N',')
    WHERE NULLIF(LTRIM(RTRIM(value)), N'') IS NOT NULL
        AND TRY_CONVERT(int, LTRIM(RTRIM(value))) IS NOT NULL;

    INSERT @Assets (ID)
    SELECT DISTINCT TRY_CONVERT(int, LTRIM(RTRIM(value)))
    FROM STRING_SPLIT(ISNULL(@AssetIds, N''), N',')
    WHERE NULLIF(LTRIM(RTRIM(value)), N'') IS NOT NULL
        AND TRY_CONVERT(int, LTRIM(RTRIM(value))) IS NOT NULL;

    INSERT @Locations (ID)
    SELECT DISTINCT TRY_CONVERT(int, LTRIM(RTRIM(value)))
    FROM STRING_SPLIT(ISNULL(@LocationIds, N''), N',')
    WHERE NULLIF(LTRIM(RTRIM(value)), N'') IS NOT NULL
        AND TRY_CONVERT(int, LTRIM(RTRIM(value))) IS NOT NULL;

    IF EXISTS (SELECT 1 FROM @Characters requested WHERE requested.ID <= 0 OR NOT EXISTS (SELECT 1 FROM dbo.Characters c WHERE c.CharacterID = requested.ID AND c.ProjectID = @ProjectID AND c.IsArchived = 0))
        RETURN;
    IF EXISTS (SELECT 1 FROM @Assets requested WHERE requested.ID <= 0 OR NOT EXISTS (SELECT 1 FROM dbo.StoryAssets sa WHERE sa.StoryAssetID = requested.ID AND sa.ProjectID = @ProjectID AND sa.IsArchived = 0))
        RETURN;
    IF EXISTS (SELECT 1 FROM @Locations requested WHERE requested.ID <= 0 OR NOT EXISTS (SELECT 1 FROM dbo.Locations l WHERE l.LocationID = requested.ID AND l.ProjectID = @ProjectID AND l.IsArchived = 0))
        RETURN;

    DELETE sc
    FROM dbo.SceneCharacters sc
    WHERE sc.SceneID = @SceneID
        AND NOT EXISTS (SELECT 1 FROM @Characters requested WHERE requested.ID = sc.CharacterID)
        AND sc.RoleInSceneTypeID IS NULL
        AND sc.PresenceTypeID IS NULL
        AND sc.LocationID IS NULL
        AND sc.EntryLocationID IS NULL
        AND sc.ExitLocationID IS NULL
        AND sc.AppearanceNotes IS NULL
        AND sc.OutfitDescription IS NULL
        AND sc.PhysicalCondition IS NULL
        AND sc.EmotionalState IS NULL
        AND sc.KnowledgeNotes IS NULL;

    INSERT dbo.SceneCharacters (SceneID, CharacterID)
    SELECT @SceneID, requested.ID
    FROM @Characters requested
    WHERE NOT EXISTS (SELECT 1 FROM dbo.SceneCharacters sc WHERE sc.SceneID = @SceneID AND sc.CharacterID = requested.ID);

    DELETE wcsa
    FROM dbo.WordCompanionSceneAssets wcsa
    WHERE wcsa.SceneID = @SceneID
        AND NOT EXISTS (SELECT 1 FROM @Assets requested WHERE requested.ID = wcsa.StoryAssetID);

    INSERT dbo.WordCompanionSceneAssets (SceneID, StoryAssetID)
    SELECT @SceneID, requested.ID
    FROM @Assets requested
    WHERE NOT EXISTS (SELECT 1 FROM dbo.WordCompanionSceneAssets wcsa WHERE wcsa.SceneID = @SceneID AND wcsa.StoryAssetID = requested.ID);

    DELETE wcsl
    FROM dbo.WordCompanionSceneLocations wcsl
    WHERE wcsl.SceneID = @SceneID
        AND NOT EXISTS (SELECT 1 FROM @Locations requested WHERE requested.ID = wcsl.LocationID);

    INSERT dbo.WordCompanionSceneLocations (SceneID, LocationID)
    SELECT @SceneID, requested.ID
    FROM @Locations requested
    WHERE NOT EXISTS (SELECT 1 FROM dbo.WordCompanionSceneLocations wcsl WHERE wcsl.SceneID = @SceneID AND wcsl.LocationID = requested.ID);

    SELECT @SceneID AS SceneId,
        (SELECT COUNT(*) FROM @Characters) AS CharactersUpdated,
        (SELECT COUNT(*) FROM @Assets) AS AssetsUpdated,
        (SELECT COUNT(*) FROM @Locations) AS LocationsUpdated,
        N'Scene links updated.' AS Message;
END;
GO