using System.Security.Cryptography;
using OpenNest.CNC.CuttingStrategy;
using OpenNest.Engine.CuttingPlanning;
using OpenNest.IO;

namespace OpenNest.Tests.CuttingPlanning;

public class ContourRecoveryFileTests
{
    // Optional private inputs: never embed customer geometry or names in the repository.
    // RecoveryCuttingNestPath: scribed parts with aligned slot pairs, and a bolted frame boxed
    // in by parts cut before it, that the free search only finishes through contour recovery.
    // One of its plates also holds a many-holed part that once set every stall, so the plan
    // must finish with most of the budget to spare, not just within it.
    [SkippableTheory]
    [InlineData("InterlockedCuttingNestPath", false, 100)]
    [InlineData("InterlockedCuttingNestPath", true, 100)]
    [InlineData("RecoveryCuttingNestPath", false, 60)]
    [InlineData("RecoveryCuttingNestPath", true, 60)]
    public void PlateFinishesThroughDesktopBatchWithoutChangingInput(string key, bool lineLeads, int budgetPercent)
    {
        var path = TestConfig.GetExistingPath(key);
        Skip.If(path == null, $"Configure {key} in ignored test-config.json.");
        var bytes = SHA256.HashData(File.ReadAllBytes(path!));
        var nest = new NestReader(path).Read();
        var plates = nest.Plates.Where(p => p.Parts.Count > 0).ToArray();
        Assert.NotEmpty(plates);
        var parts = plates.SelectMany(p => p.Parts).ToArray();
        var programs = parts.Select(p => ExplicitContourTests.Fingerprint(p.Program)).ToArray();
        var poses = parts.Select(p => (p.Location, p.Rotation, p.LeadInsLocked)).ToArray();
        var parameters = Parameters(lineLeads);

        var proposal = CuttingPlanBatch.Capture(plates, parameters, preservePartOrder: false).Plan();

        Assert.True(proposal.CanApply, string.Join(Environment.NewLine, proposal.Describe("in")));
        Assert.False(proposal.RequiresWarningAcceptance);
        Assert.Equal(plates.Length, proposal.Plates.Count);
        foreach (var planned in proposal.Plates)
        {
            Assert.True(planned.IsOverlapClear);
            Assert.True(planned.Result.IndependentlyReplayed);
            Assert.Equal(CuttingPlanStatus.Ready, planned.Result.Status);
            Assert.InRange(planned.Result.Expansions, 1,
                CuttingPlanBatch.PlateBudget(planned.Plate.Parts.Count) * budgetPercent / 100);
            Assert.Equal(planned.Plate.Parts.Count, planned.PartCount);
            var snapshot = planned.Result.Snapshot;
            foreach (var part in planned.Result.ProposedOrder)
            {
                Assert.Equal(snapshot.Placements[part.SourceOrdinal].Prepared.Count, part.ContourChoices.Count);
                Assert.Equal(part.ContourChoices.Count, part.ContourChoices.Select(c => c.ContourOrdinal).Distinct().Count());
            }
            var replay = CuttingPlanService.ReplayPrograms(snapshot, planned.Result.ProposedOrder, 0, default);
            Assert.Equal(CuttingPlanStatus.Ready, replay.Status);
            Assert.True(replay.IndependentlyReplayed);
            Assert.Empty(replay.Findings);

            var bounded = CuttingPlanService.Plan(snapshot.WithSearchLimits(1, 16));
            Assert.Equal(CuttingPlanStatus.NoSolutionWithinBudget, bounded.Status);
            Assert.Equal(1, bounded.Expansions);
            Assert.Empty(bounded.ProposedOrder);
            Assert.False(bounded.IndependentlyReplayed);
        }
        using var cancellation = new CancellationTokenSource();
        cancellation.Cancel();
        var canceled = CuttingPlanBatch.Capture(plates, parameters, false).Plan(token: cancellation.Token);
        Assert.True(canceled.IsCanceled);
        Assert.False(canceled.CanApplyWithWarnings);
        Assert.Equal(parts, plates.SelectMany(p => p.Parts));
        Assert.Equal(programs, parts.Select(p => ExplicitContourTests.Fingerprint(p.Program)));
        Assert.Equal(poses, parts.Select(p => (p.Location, p.Rotation, p.LeadInsLocked)));
        Assert.Equal(bytes, SHA256.HashData(File.ReadAllBytes(path)));
    }

    // Optional private input: a plate of holed parts whose preferred hole chains used to fail on
    // cutouts left back across themselves, spending the whole default budget before a new order.
    [SkippableFact]
    public void HoledPlatesFindANewOrderWithinTheDefaultBudget()
    {
        var path = TestConfig.GetExistingPath("HoledReorderNestPath");
        Skip.If(path == null, "Configure HoledReorderNestPath in ignored test-config.json.");
        var bytes = SHA256.HashData(File.ReadAllBytes(path!));
        var nest = new NestReader(path).Read();
        // Locked programs are fixed emissions: those plates yield unverified proposals by design.
        var plates = nest.Plates.Where(p => p.Parts.Count > 0 && p.Parts.All(part => !part.LeadInsLocked)).ToArray();
        Skip.If(plates.Length == 0, "The configured nest has no plate of unlocked parts.");
        var parts = plates.SelectMany(p => p.Parts).ToArray();
        var programs = parts.Select(p => ExplicitContourTests.Fingerprint(p.Program)).ToArray();

        var proposal = CuttingPlanBatch.Capture(plates, Parameters(lineLeads: true), preservePartOrder: false).Plan();

        Assert.True(proposal.CanApply, string.Join(Environment.NewLine, proposal.Describe("in")));
        foreach (var planned in proposal.Plates)
        {
            Assert.False(planned.KeptCurrentOrder);
            Assert.True(planned.IsReady);
            Assert.InRange(planned.Result.Expansions, 1, CuttingPlanBatch.PlateBudget(planned.Plate.Parts.Count));
        }
        Assert.Equal(programs, parts.Select(p => ExplicitContourTests.Fingerprint(p.Program)));
        Assert.Equal(bytes, SHA256.HashData(File.ReadAllBytes(path)));
    }

    private static CuttingParameters Parameters(bool lineLeads)
    {
        var parameters = new CuttingParameters();
        if (lineLeads)
        {
            parameters.ExternalLeadIn = new LineLeadIn { Length = 0.15, ApproachAngle = 90 };
            parameters.InternalLeadIn = new LineLeadIn { Length = 0.15, ApproachAngle = 90 };
        }
        return parameters;
    }
}