namespace JdeScoping.ConfigManager.Models;

/// <summary>
/// Root model for pipelines.json configuration.
/// </summary>
public class PipelinesConfigModel
{
    /// <summary>
    /// Gets or sets the pipeline settings.
    /// </summary>
    public PipelineSettings Settings { get; set; } = new();

    /// <summary>
    /// Gets or sets the default schedules for all pipelines.
    /// </summary>
    public ScheduleDefaults ScheduleDefaults { get; set; } = new();

    /// <summary>
    /// Gets or sets the collection of named pipelines.
    /// </summary>
    public Dictionary<string, PipelineModel> Pipelines { get; set; } = new();
}

public class PipelineSettings
{
    /// <summary>
    /// Gets or sets the timezone for scheduling operations.
    /// </summary>
    public string Timezone { get; set; } = "UTC";
}

public class ScheduleDefaults
{
    /// <summary>
    /// Gets or sets the default mass data refresh schedule.
    /// </summary>
    public ScheduleModel Mass { get; set; } = new() { Enabled = true, IntervalMinutes = 10080, PrePurge = true, ReIndex = true };

    /// <summary>
    /// Gets or sets the default daily data refresh schedule.
    /// </summary>
    public ScheduleModel Daily { get; set; } = new() { Enabled = true, IntervalMinutes = 1440 };

    /// <summary>
    /// Gets or sets the default hourly data refresh schedule.
    /// </summary>
    public ScheduleModel Hourly { get; set; } = new() { Enabled = true, IntervalMinutes = 60 };
}

public class PipelineModel
{
    /// <summary>
    /// Gets or sets the source configuration for data extraction.
    /// </summary>
    public PipelineSource Source { get; set; } = new();

    /// <summary>
    /// Gets or sets the schedule configurations for this pipeline.
    /// </summary>
    public PipelineSchedules Schedules { get; set; } = new();

    /// <summary>
    /// Gets or sets optional data transformers applied between source and destination.
    /// </summary>
    public List<TransformerModel>? Transformers { get; set; }

    /// <summary>
    /// Gets or sets the destination configuration for data loading.
    /// </summary>
    public PipelineDestination Destination { get; set; } = new();

    /// <summary>
    /// Gets or sets optional scripts to execute before pipeline starts.
    /// </summary>
    public string[]? PreScripts { get; set; }

    /// <summary>
    /// Gets or sets optional scripts to execute after pipeline completion.
    /// </summary>
    public string[]? PostScripts { get; set; }
}

public class PipelineSource
{
    /// <summary>
    /// Gets or sets the source database connection name.
    /// Used for database sources.
    /// </summary>
    public string Connection { get; set; } = string.Empty;

    /// <summary>
    /// Gets or sets the query to extract data from the source.
    /// Used for database sources.
    /// </summary>
    public string Query { get; set; } = string.Empty;

    /// <summary>
    /// Gets or sets the optional mass query for full data extraction.
    /// Used for database sources.
    /// </summary>
    public string? MassQuery { get; set; }

    /// <summary>
    /// Gets or sets the query parameters and their definitions.
    /// Used for database sources.
    /// </summary>
    public Dictionary<string, ParameterDefinition> Parameters { get; set; } = new();

    /// <summary>
    /// Gets or sets the file name for file-based sources.
    /// Used for Protobuf+Zstd files.
    /// </summary>
    public string? FileName { get; set; }
}

public class ParameterDefinition
{
    /// <summary>
    /// Gets or sets the parameter name.
    /// </summary>
    public string Name { get; set; } = string.Empty;

    /// <summary>
    /// Gets or sets the optional parameter format string.
    /// </summary>
    public string? Format { get; set; }

    /// <summary>
    /// Gets or sets the optional parameter source or derivation logic.
    /// </summary>
    public string? Source { get; set; }
}

public class PipelineSchedules
{
    /// <summary>
    /// Gets or sets the mass refresh schedule for this pipeline.
    /// </summary>
    public ScheduleModel? Mass { get; set; }

    /// <summary>
    /// Gets or sets the daily refresh schedule for this pipeline.
    /// </summary>
    public ScheduleModel? Daily { get; set; }

    /// <summary>
    /// Gets or sets the hourly refresh schedule for this pipeline.
    /// </summary>
    public ScheduleModel? Hourly { get; set; }
}

public class PipelineDestination
{
    /// <summary>
    /// Gets or sets the destination type (BulkImport or BulkMerge).
    /// BulkImport truncates and loads; BulkMerge matches and updates.
    /// </summary>
    public string Type { get; set; } = "BulkMerge";

    /// <summary>
    /// Gets or sets the destination table name.
    /// </summary>
    public string Table { get; set; } = string.Empty;

    /// <summary>
    /// Gets or sets the columns used to match existing records for updates.
    /// Only used for BulkMerge destination type.
    /// </summary>
    public string[] MatchColumns { get; set; } = [];

    /// <summary>
    /// Gets or sets the columns to exclude from update operations.
    /// Only used for BulkMerge destination type.
    /// </summary>
    public string[] ExcludeFromUpdate { get; set; } = [];
}

/// <summary>
/// Represents a data transformer applied between source and destination.
/// </summary>
public class TransformerModel
{
    /// <summary>
    /// Gets or sets the transformer type.
    /// Supported types: ColumnDrop, ColumnRename, JdeDate.
    /// </summary>
    public string Type { get; set; } = string.Empty;

    /// <summary>
    /// Gets or sets the columns affected by this transformer.
    /// Used by ColumnDrop (columns to remove) and JdeDate (date/time columns).
    /// </summary>
    public List<string>? Columns { get; set; }

    /// <summary>
    /// Gets or sets the column mappings for rename operations.
    /// Used by ColumnRename: OldName → NewName.
    /// </summary>
    public Dictionary<string, string>? Mappings { get; set; }

    /// <summary>
    /// Gets or sets the date column name for JdeDate transformer.
    /// </summary>
    public string? DateColumn { get; set; }

    /// <summary>
    /// Gets or sets the time column name for JdeDate transformer.
    /// </summary>
    public string? TimeColumn { get; set; }

    /// <summary>
    /// Gets or sets the output column name for JdeDate transformer.
    /// </summary>
    public string? OutputColumn { get; set; }
}