using AcDream.Core.Chat;

namespace AcDream.Core.Tests.Chat;

/// <summary>
/// Tests for <see cref="WeenieErrorMessages"/>. The retail client showed
/// these as plain-language strings; we mirror that via templated lookup.
/// Filed after the 2026-04-25 live launch where the user saw cryptic
/// "WeenieError 0x051B" in chat for what was actually a friendly login
/// notification.
/// </summary>
public sealed class WeenieErrorMessagesTests
{
    // ── known codes — informational, parameterised ───────────────────

    [Fact]
    public void Format_YouHaveEnteredChannel_SubstitutesParam()
    {
        // 0x051B = WeenieErrorWithString.YouHaveEnteredThe_Channel.
        // Template "You have entered the _ channel." with `_` placeholder.
        Assert.Equal(
            "You have entered the General channel.",
            WeenieErrorMessages.Format(0x051B, "General"));
    }

    [Fact]
    public void Format_YouHaveEnteredChannel_WorksForEachChannelName()
    {
        Assert.Equal("You have entered the Trade channel.",   WeenieErrorMessages.Format(0x051B, "Trade"));
        Assert.Equal("You have entered the LFG channel.",     WeenieErrorMessages.Format(0x051B, "LFG"));
        Assert.Equal("You have entered the Roleplay channel.",WeenieErrorMessages.Format(0x051B, "Roleplay"));
    }

    [Fact]
    public void Format_YouHaveLeftChannel_SubstitutesParam()
    {
        Assert.Equal(
            "You have left the General channel.",
            WeenieErrorMessages.Format(0x051C, "General"));
    }

    // ── known codes — informational, no parameter ────────────────────

    [Fact]
    public void Format_0x051D_ReturnsNull_NoRetailCaseExists()
    {
        // Campaign CH slice CH2: the pre-CH2 "Turbine Chat is enabled."
        // text for 0x051D was an ACE-derived guess, never decomp-confirmed.
        // The full HandleFailureEvent port found NO case for 0x51D anywhere
        // in the switch (only 0x51C has one — case 0x51c: at raw line
        // 383115-383118 of acclient_2013_pseudo_c.txt) — retail's own
        // client simply has no display text for this id.
        //
        // REJECT-review rework (SHOULD-FIX 4,
        // docs/research/2026-08-09-ch2-review-findings.md): retail's switch
        // has no default case — an unhandled id produces NO text, silently,
        // toward the player. Format now returns null rather than inventing
        // a "WeenieError 0xNNNN" hex fallback that has no retail
        // counterpart.
        Assert.Null(WeenieErrorMessages.Format(0x051D, param: null));
    }

    // ── known codes — error-level ────────────────────────────────────

    [Fact]
    public void Format_CharacterNotAvailable_NoParam()
    {
        // 0x052B fired by the server when a Tell target lookup fails
        // (e.g. the user typed "/t je, hello" → server got "je," → no
        // character). Should read like the retail message.
        Assert.Equal(
            "That person is not available now.",
            WeenieErrorMessages.Format(0x052B, param: null));
    }

    [Fact]
    public void Format_TradeComplete()
    {
        Assert.Equal("Trade Complete!", WeenieErrorMessages.Format(0x0529, null));
    }

    [Fact]
    public void Format_ThatIsNotAValidCommand()
    {
        // 0x0026 fires on /-prefixed text that ACE's command parser
        // can't resolve. Filed after a 2026-04-25 trace where /help
        // produced cryptic "WeenieError 0x0026" lines.
        Assert.Equal(
            "That is not a valid command.",
            WeenieErrorMessages.Format(0x0026, null));
    }

    [Fact]
    public void Format_YouAreNotInAllegiance()
    {
        Assert.Equal(
            "You are not in an allegiance!",
            WeenieErrorMessages.Format(0x0414, null));
    }

    [Fact]
    public void Format_YouDoNotBelongToAFellowship()
    {
        Assert.Equal(
            "You do not belong to a Fellowship.",
            WeenieErrorMessages.Format(0x050F, null));
    }

    [Theory]
    [InlineData(0x0036u, "Action cancelled!")]
    [InlineData(0x003Du, "You charged too far!")]
    [InlineData(0x004Au, "Ack! You killed yourself!")]
    [InlineData(0x0550u, "Out of Range!")]
    public void Format_CombatMovementErrors(uint code, string expected)
        => Assert.Equal(expected, WeenieErrorMessages.Format(code, null));

    // ── PK status codes ───────────────────────────────────────────────

    [Fact]
    public void Format_YouAreNonPKAgain_ExactRetailText()
    {
        // 0x0504 = WeenieError.YouAreNonPKAgain. Filed after the user saw
        // "WeenieError 0x0504" on login following a PK Lite status
        // reversion. Retail: ClientCommunicationSystem::HandleFailureEvent
        // @0x00571990 case 0x504 @0x005745cd; string recovered byte-exact
        // from data_7d32c0 in the PDB-paired binary (the pseudo-C dump
        // truncates at the declared 0x5f-wchar16 array bound, mid-sentence
        // at "...protection of the Lig").
        Assert.Equal(
            "You are enveloped in a feeling of warmth as you are brought back into the protection of the Light. You are once again a Non-Player Killer.",
            WeenieErrorMessages.Format(0x0504, null));
    }

    [Fact]
    public void Format_YoureTooCloseToYourSanctuary()
    {
        // 0x0505, case 0x505 @0x00574c65, data_7d2640.
        Assert.Equal(
            "You're too close to your sanctuary!",
            WeenieErrorMessages.Format(0x0505, null));
    }

    [Fact]
    public void Format_CannotChangePKStatusWhileRecovering()
    {
        // 0x04EC, case 0x4ec @0x0057446f, data_7d3820.
        Assert.Equal(
            "You cannot modify your player killer status while you are recovering from a PK death.",
            WeenieErrorMessages.Format(0x04EC, null));
    }

    [Fact]
    public void Format_AdvocatesCannotChangePKStatus()
    {
        // 0x04ED, case 0x4ed @0x005744a1, data_7d37b0.
        Assert.Equal(
            "Advocates may not change their player killer status!",
            WeenieErrorMessages.Format(0x04ED, null));
    }

    [Fact]
    public void Format_LevelTooLowToChangePKStatus_NowResolvedByCH2()
    {
        // 0x04EE (LevelTooLowToChangePKStatusWithObject) sits right next to
        // the PK-status codes above; the pre-CH2 test asserted the
        // fallback because only a curated ~60-entry subset was ported then.
        // Campaign CH slice CH2's full 338-row HandleFailureEvent port
        // (Appendix A row 0x4EE, Type 0x00) resolves it for real.
        Assert.Equal(
            "Your level is too low to change your player killer status with this object.",
            WeenieErrorMessages.Format(0x04EE, null));
    }

    // ── unknown codes — retail-faithful silence (SHOULD-FIX 4) ───────
    //
    // docs/research/2026-08-09-ch2-review-findings.md SHOULD-FIX 4: retail's
    // HandleFailureEvent switch has no default case — an id it does not
    // recognize produces NO text at all, toward the player. The prior
    // "WeenieError 0xNNNN[: param]" hex fallback was acdream's own
    // invention with no retail counterpart. These three tests are flipped
    // (not deleted) to pin the new null-means-silence contract.

    [Fact]
    public void Format_UnknownCode_NoParam_ReturnsNull()
    {
        Assert.Null(WeenieErrorMessages.Format(0xABCD, null));
    }

    [Fact]
    public void Format_UnknownCode_WithParam_ReturnsNull()
    {
        Assert.Null(WeenieErrorMessages.Format(0xDEAD, "Mana Stone"));
    }

    [Fact]
    public void Format_UnknownCode_EmptyParam_ReturnsNull()
    {
        Assert.Null(WeenieErrorMessages.Format(0xCAFE, ""));
    }

    // ── parameterised templates with non-trivial params ──────────────

    [Fact]
    public void Format_HearListAdded_SubstitutesParam()
    {
        Assert.Equal(
            "Caith has been added to the list of people you can hear.",
            WeenieErrorMessages.Format(0x0521, "Caith"));
    }

    [Fact]
    public void Format_0x004F_ResolvesToRetailText()
    {
        // REJECT-review rework (BLOCKER 2,
        // docs/research/2026-08-09-ch2-review-findings.md): the prior
        // "grep for a case label" transcription missed 0x04F because it
        // dispatches via `else if (arg2 == 0x4f)`, not a switch case label.
        // The binary sweep found its sprintf format string directly
        // (VA 0x00571e23, in ClientCommunicationSystem::HandleFailureEvent's
        // else-if chain). Retail preserves its own $s typo (only the first
        // %s substitutes), same pattern as 0x4F4.
        Assert.Equal(
            "You fail to affect Drudge because $s cannot be harmed!",
            WeenieErrorMessages.Format(0x004F, "Drudge"));
    }

    [Fact]
    public void Format_HealingTargetAlreadyFull_SubstitutesParam()
    {
        Assert.Equal(
            "+Acdream is already at full health!",
            WeenieErrorMessages.Format(0x04FF, "+Acdream"));
    }

    // ── Campaign CH slice CH2: the full HandleFailureEvent table port ────

    /// <summary>
    /// Pins the table's size: 344 rows. REJECT-review rework (BLOCKER 2,
    /// docs/research/2026-08-09-ch2-review-findings.md) added the 5 ids the
    /// prior pass's case-label enumeration missed (dispatched via
    /// <c>else if</c> chains, not switch cases) plus <c>0x4F8</c>, which now
    /// resolves for real instead of being deliberately excluded: 338 + 5 + 1
    /// = 344. A change to this number without a matching research/commit
    /// citation is a red flag, not a routine edit.
    /// </summary>
    [Fact]
    public void Resolve_FullTable_HasExactly344Rows()
    {
        int count = 0;
        for (uint id = 0; id <= 0x600u; id++)
        {
            var (text, _) = WeenieErrorMessages.Resolve(id, null);
            if (text is not null)
                count++;
        }
        Assert.Equal(344, count);
    }

    [Fact]
    public void Resolve_0x4F8_NowResolvesForReal()
    {
        // REJECT-review rework (BLOCKER 2): the prior pass excluded 0x4F8
        // because its case body's 3-operator+ concatenation chain has
        // confusing BN-generated self-referential operand names. The binary
        // sweep dereferenced both literal data pointers directly
        // (data_7d2ee8, data_7d2f80), sidestepping the naming confusion.
        // Both %s placeholders substitute the SAME parameter (retail only
        // has one arg3 to concatenate twice).
        var (text, type) = WeenieErrorMessages.Resolve(0x4F8, "Someone");
        Assert.Equal(
            "Someone fails to affect you because you are not the same sort of player killer as Someone!",
            text);
        Assert.Equal(RetailLogTextType.Magic, type);
    }

    // ── REJECT-review rework (BLOCKER 2): every corrected/added row ──────
    //
    // docs/research/2026-08-09-ch2-review-findings.md — pins the exact text
    // for every id the binary sweep + ACE cross-check corrected or added
    // this pass, so a future regression to the wrong (previously-landed)
    // text fails loudly instead of silently.

    [Theory]
    // 5 ids added — missed by the prior case-label enumeration because
    // they dispatch via `else if (arg2 == N)`, not a switch case.
    [InlineData(0x04Fu, "You fail to affect %s because $s cannot be harmed!", RetailLogTextType.Magic)]
    [InlineData(0x3EEu, "The container is closed!", RetailLogTextType.ClientLocal)]
    [InlineData(0x408u, "Your spell cannot be cast inside", RetailLogTextType.ClientLocal)]
    [InlineData(0x48Au, "You must be a monarch to purchase this dwelling.", RetailLogTextType.Default)]
    [InlineData(0x4E8u, "The %s cannot be used while on a hook and only the owner may open the hook.", RetailLogTextType.Default)]
    // 16 ids corrected per the review's own flagged list.
    [InlineData(0x051u, "You fail to affect %s because you are not a player killer!", RetailLogTextType.Magic)]
    [InlineData(0x053u, "You fail to affect %s because you are not the same sort of player killer as %s!", RetailLogTextType.Magic)]
    [InlineData(0x054u, "You fail to affect %s because you are acting across a house boundary!", RetailLogTextType.Magic)]
    [InlineData(0x466u, "You must purchase Asheron's Call: Dark Majesty to interact with that portal.", RetailLogTextType.Magic)]
    [InlineData(0x4A3u, "You must have linked with a portal in order to recall to it!", RetailLogTextType.Magic)]
    [InlineData(0x4B5u, "You must specify a character to query.", RetailLogTextType.ClientLocal)]
    [InlineData(0x4E0u, "You are currently wielding items which require a certain level of skill. Your attributes cannot be transferred while you are wielding these items. Please remove these items and try again.", RetailLogTextType.Default)]
    [InlineData(0x4F7u, "%s fails to affect you because you are not a player killer!", RetailLogTextType.Magic)]
    [InlineData(0x544u, "An unspecified error occurred while attempting to remove %s as an allegiance officer.", RetailLogTextType.Default)]
    [InlineData(0x54Eu, "The hook does not contain a usable item. You cannot open the hook because you do not own the house to which it belongs.", RetailLogTextType.Default)]
    [InlineData(0x552u, "You must purchase Asheron's Call -- Throne of Destiny to use this function.", RetailLogTextType.ClientLocal)]
    [InlineData(0x553u, "You must purchase Asheron's Call -- Throne of Destiny to use this item.", RetailLogTextType.ClientLocal)]
    [InlineData(0x554u, "You must purchase Asheron's Call -- Throne of Destiny to use this portal.", RetailLogTextType.ClientLocal)]
    [InlineData(0x555u, "You must purchase Asheron's Call -- Throne of Destiny to access this quest.", RetailLogTextType.ClientLocal)]
    [InlineData(0x57Fu, "Your allegiance chat privileges have been temporarily removed by %s. Until they are restored, you may not view or speak in the allegiance chat channel.", RetailLogTextType.Default)]
    [InlineData(0x582u, "Your allegiance chat privileges have been restored by %s.", RetailLogTextType.Default)]
    // 2 ids corrected that were NOT in the review's flagged list — found by
    // an automated diff between the swept binary literals and the landed
    // table (the review's own "sweep may find more" prediction).
    [InlineData(0x4E9u, "The %s cannot be used while on a hook, use the '@house hooks on' command to make the hook openable.", RetailLogTextType.Default)]
    [InlineData(0x518u, "This fellowship is locked; %s cannot be recruited into the fellowship.", RetailLogTextType.Default)]
    public void Resolve_Blocker2CorrectedRows_MatchTheSweptBinaryLiteral(
        uint id, string expectedTemplate, RetailLogTextType expectedType)
    {
        var (text, type) = WeenieErrorMessages.Resolve(id, param: null);
        Assert.Equal(expectedTemplate, text);
        Assert.Equal(expectedType, type);
    }

    // ── spot pins across all three retail routing destinations ──────────

    [Theory]
    // ClientLocal (0x1A) — the SpewBox destination.
    [InlineData(0x017u, "You failed to go to non-combat mode.", RetailLogTextType.ClientLocal)]
    [InlineData(0x02Au, "You are too encumbered to carry that!", RetailLogTextType.ClientLocal)]
    [InlineData(0x04EBu, "You can't do that while in the air!", RetailLogTextType.ClientLocal)]
    [InlineData(0x550u, "Out of Range!", RetailLogTextType.ClientLocal)]
    // Magic (0x07) — the light-blue spell/portal-failure channel.
    [InlineData(0x402u, "Your spell fizzled.", RetailLogTextType.Magic)]
    [InlineData(0x49Bu, "You fail to link with the lifestone!", RetailLogTextType.Magic)]
    [InlineData(0x593u, "Olthoi characters can only use Lifestone and PK Arena recalls!", RetailLogTextType.Magic)]
    // Default (0x00) — the ordinary broadcast/green channel.
    [InlineData(0x4A, "Ack! You killed yourself!", RetailLogTextType.Default)]
    [InlineData(0x50Cu, "%s is now a closed fellowship.", RetailLogTextType.Default)]
    [InlineData(0x55Fu, "Only Player Killer characters may use this command!", RetailLogTextType.Default)]
    public void Resolve_SpotPins_TextAndTypeMatchAppendixA(uint id, string expectedTemplate, RetailLogTextType expectedType)
    {
        var (text, type) = WeenieErrorMessages.Resolve(id, param: null);
        Assert.Equal(expectedTemplate, text);
        Assert.Equal(expectedType, type);
    }

    [Fact]
    public void Resolve_JumpFamily_SharesClientTextRefusalsConstantsVerbatim()
    {
        // HandleFailureEvent's 0x24/0x48/0x49 cases reuse the SAME string
        // globals as the local jump-refusal sites — assert byte-identity,
        // not just similar wording.
        Assert.Equal(ClientTextRefusals.CantJumpInAir, WeenieErrorMessages.Resolve(0x024u, null).Text);
        Assert.Equal(ClientTextRefusals.CantJumpPosition, WeenieErrorMessages.Resolve(0x048u, null).Text);
        Assert.Equal(ClientTextRefusals.CantJumpLoad, WeenieErrorMessages.Resolve(0x049u, null).Text);
        Assert.Equal(RetailLogTextType.ClientLocal, WeenieErrorMessages.Resolve(0x024u, null).Type);
        Assert.Equal(RetailLogTextType.ClientLocal, WeenieErrorMessages.Resolve(0x048u, null).Type);
        Assert.Equal(RetailLogTextType.ClientLocal, WeenieErrorMessages.Resolve(0x049u, null).Type);
    }

    [Fact]
    public void Resolve_0x4F4_PreservesRetailDollarSTypo()
    {
        // Retail's own literal is "...because $s cannot affect anyone!" —
        // a genuine retail typo (should have been %s). Only the FIRST %s
        // substitutes; the literal "$s" must NOT be replaced.
        var (text, type) = WeenieErrorMessages.Resolve(0x4F4u, "A drudge");
        Assert.Equal("A drudge fails to affect you because $s cannot affect anyone!", text);
        Assert.Equal(RetailLogTextType.Magic, type);
    }

    // ── Campaign FA slice FA1 (2026-08-11): the 8 "missing" fellowship ids ──
    //
    // Same class of proof as Format_0x051D_ReturnsNull_NoRetailCaseExists
    // above: independently re-ran this file's own binary-sweep methodology
    // (a full-text grep of acclient_2013_pseudo_c.txt for every
    // literal/case-label comparison against these 8 ids, plus a manual
    // walk of HandleFailureEvent's own case-label sequence around each)
    // and found NO case for any of them anywhere in the Sept-2013 client.
    // These are intentionally absent from the table, not overlooked —
    // adding invented text for them would itself be the SHOULD-FIX-4 class
    // of bug this table exists to avoid.
    [Theory]
    [InlineData(0x0417u)] // FellowshipIgnoringRequests — ACE sends this live; retail still shows nothing
    [InlineData(0x0418u)] // FellowshipSquelched — ACE never sends it
    [InlineData(0x0419u)] // FellowshipMaxDistanceExceeded — ACE never sends it
    [InlineData(0x041Au)] // FellowshipMember — ACE never sends it
    [InlineData(0x041Bu)] // FellowshipIllegalLevel — ACE never sends it
    [InlineData(0x041Cu)] // FellowshipRecruitBusy — ACE never sends it (busy is a plain chat line instead)
    [InlineData(0x04DBu)] // FellowshipDeclined — ACE sends this live; retail still shows nothing
    [InlineData(0x04DCu)] // FellowshipTimeout — ACE never sends it
    public void Resolve_FellowshipIdsAbsentFromHandleFailureEvent_ReturnsNoText(uint code)
    {
        var (text, _) = WeenieErrorMessages.Resolve(code, param: null);
        Assert.Null(text);
    }
}