using Microsoft.AspNetCore.Mvc;
using System.ComponentModel.DataAnnotations;
using StellaOps.Auth.Abstractions;
using StellaOps.Scheduler.Models;
using StellaOps.Scheduler.WebService.Auth;

namespace StellaOps.Scheduler.WebService.GraphJobs;

public static class GraphJobEndpointExtensions
{
    public static void MapGraphJobEndpoints(this IEndpointRouteBuilder builder)
    {
        var group = builder.MapGroup("/graphs");

        group.MapPost("/build", CreateGraphBuildJob);
        group.MapPost("/overlays", CreateGraphOverlayJob);
        group.MapGet("/jobs", GetGraphJobs);
        group.MapPost("/hooks/completed", CompleteGraphJob);
        group.MapGet("/overlays/lag", GetOverlayLagMetrics);
    }

    internal static async Task<IResult> CreateGraphBuildJob(
        [FromBody] GraphBuildJobRequest request,
        HttpContext httpContext,
        [FromServices] ITenantContextAccessor tenantAccessor,
        [FromServices] IScopeAuthorizer authorizer,
        [FromServices] IGraphJobService jobService,
        CancellationToken cancellationToken)
    {
        try
        {
            authorizer.EnsureScope(httpContext, StellaOpsScopes.GraphWrite);
            var tenant = tenantAccessor.GetTenant(httpContext);
            var job = await jobService.CreateBuildJobAsync(tenant.TenantId, request, cancellationToken);
            return Results.Created($"/graphs/jobs/{job.Id}", GraphJobResponse.From(job));
        }
        catch (UnauthorizedAccessException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status401Unauthorized);
        }
        catch (InvalidOperationException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status403Forbidden);
        }
        catch (ValidationException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status400BadRequest);
        }
        catch (KeyNotFoundException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status404NotFound);
        }
    }

    internal static async Task<IResult> CreateGraphOverlayJob(
        [FromBody] GraphOverlayJobRequest request,
        HttpContext httpContext,
        [FromServices] ITenantContextAccessor tenantAccessor,
        [FromServices] IScopeAuthorizer authorizer,
        [FromServices] IGraphJobService jobService,
        CancellationToken cancellationToken)
    {
        try
        {
            authorizer.EnsureScope(httpContext, StellaOpsScopes.GraphWrite);
            var tenant = tenantAccessor.GetTenant(httpContext);
            var job = await jobService.CreateOverlayJobAsync(tenant.TenantId, request, cancellationToken);
            return Results.Created($"/graphs/jobs/{job.Id}", GraphJobResponse.From(job));
        }
        catch (UnauthorizedAccessException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status401Unauthorized);
        }
        catch (InvalidOperationException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status403Forbidden);
        }
        catch (ValidationException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status400BadRequest);
        }
    }

    internal static async Task<IResult> GetGraphJobs(
        [AsParameters] GraphJobQuery query,
        HttpContext httpContext,
        [FromServices] ITenantContextAccessor tenantAccessor,
        [FromServices] IScopeAuthorizer authorizer,
        [FromServices] IGraphJobService jobService,
        CancellationToken cancellationToken)
    {
        try
        {
            authorizer.EnsureScope(httpContext, StellaOpsScopes.GraphRead);
            var tenant = tenantAccessor.GetTenant(httpContext);
            var jobs = await jobService.GetJobsAsync(tenant.TenantId, query, cancellationToken);
            return Results.Ok(jobs);
        }
        catch (UnauthorizedAccessException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status401Unauthorized);
        }
        catch (InvalidOperationException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status403Forbidden);
        }
    }

    internal static async Task<IResult> CompleteGraphJob(
        [FromBody] GraphJobCompletionRequest request,
        HttpContext httpContext,
        [FromServices] ITenantContextAccessor tenantAccessor,
        [FromServices] IScopeAuthorizer authorizer,
        [FromServices] IGraphJobService jobService,
        CancellationToken cancellationToken)
    {
        try
        {
            authorizer.EnsureScope(httpContext, StellaOpsScopes.GraphWrite);
            var tenant = tenantAccessor.GetTenant(httpContext);
            var response = await jobService.CompleteJobAsync(tenant.TenantId, request, cancellationToken);
            return Results.Ok(response);
        }
        catch (UnauthorizedAccessException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status401Unauthorized);
        }
        catch (KeyNotFoundException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status404NotFound);
        }
        catch (InvalidOperationException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status403Forbidden);
        }
        catch (ValidationException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status400BadRequest);
        }
    }

    internal static async Task<IResult> GetOverlayLagMetrics(
        HttpContext httpContext,
        [FromServices] ITenantContextAccessor tenantAccessor,
        [FromServices] IScopeAuthorizer authorizer,
        [FromServices] IGraphJobService jobService,
        CancellationToken cancellationToken)
    {
        try
        {
            authorizer.EnsureScope(httpContext, StellaOpsScopes.GraphRead);
            var tenant = tenantAccessor.GetTenant(httpContext);
            var metrics = await jobService.GetOverlayLagMetricsAsync(tenant.TenantId, cancellationToken);
            return Results.Ok(metrics);
        }
        catch (UnauthorizedAccessException ex)
        {
            return Results.Json(new { error = ex.Message }, statusCode: StatusCodes.Status401Unauthorized);
        }
    }
}