//! IFC 출력 스냅샷 테스트 (insta) — 회귀 방지용.
//!
//! IfcGUID 는 UUIDv4 무작위라 매 실행마다 달라지므로 `mask_guids()` 로
//! `GUID-XXX` 형태로 정규화한 뒤 스냅샷 비교.
//!
//! 실행:
//! ```bash
//! cargo test -p cimery-ifc --test snapshot_tests
//! # 새 baseline 채택: INSTA_UPDATE=always cargo test ...
//! ```

use cimery_ifc::{BridgeExportParams, IfcSectionKind, export_bridge};

/// GUID 정규화 — `'...'` 22자 IFC GUID 를 `'GUID'` 로 치환.
/// (IFC GUID charset: 0-9A-Za-z_$)
fn mask_guids(ifc: &str) -> String {
    // 22자 = [0-9A-Za-z_$]{22} 로 정확 매치.
    let mut out = String::with_capacity(ifc.len());
    let chars: Vec<char> = ifc.chars().collect();
    let mut i = 0;
    while i < chars.len() {
        if chars[i] == '\'' && i + 23 < chars.len() && chars[i + 23] == '\'' {
            // i+1 ~ i+22 검사.
            let all_guid_chars = (1..=22).all(|k| is_guid_char(chars[i + k]));
            if all_guid_chars {
                out.push_str("'GUID'");
                i += 24;
                continue;
            }
        }
        out.push(chars[i]);
        i += 1;
    }
    out
}

fn is_guid_char(c: char) -> bool {
    c.is_ascii_alphanumeric() || c == '_' || c == '$'
}

#[test]
fn single_span_psc_i_default() {
    let p = BridgeExportParams::default();
    let ifc = export_bridge(&p);
    insta::assert_snapshot!(mask_guids(&ifc));
}

#[test]
fn two_span_multi_column() {
    let p = BridgeExportParams {
        span_count: 2,
        girder_count: 3,
        ..Default::default()
    };
    let ifc = export_bridge(&p);
    insta::assert_snapshot!(mask_guids(&ifc));
}

#[test]
fn skewed_15_deg() {
    let p = BridgeExportParams {
        skew_deg: 15.0,
        girder_count: 2,
        ..Default::default()
    };
    let ifc = export_bridge(&p);
    insta::assert_snapshot!(mask_guids(&ifc));
}

#[test]
fn camber_50mm_subdivides() {
    let p = BridgeExportParams {
        camber_mid_mm: 50.0,
        girder_count: 2,
        ..Default::default()
    };
    let ifc = export_bridge(&p);
    insta::assert_snapshot!(mask_guids(&ifc));
}

#[test]
fn rectangle_section_no_profile_poly() {
    let p = BridgeExportParams {
        section_kind: IfcSectionKind::Rectangle,
        girder_count: 2,
        ..Default::default()
    };
    let ifc = export_bridge(&p);
    insta::assert_snapshot!(mask_guids(&ifc));
}

#[test]
fn parapets_off() {
    let p = BridgeExportParams {
        show_parapets: false,
        girder_count: 2,
        ..Default::default()
    };
    let ifc = export_bridge(&p);
    insta::assert_snapshot!(mask_guids(&ifc));
}

// ─── mask_guids 유닛 테스트 ───────────────────────────────────────────────

#[test]
fn mask_guids_replaces_22_char_token() {
    let before = "IFCPROJECT('2JBHBMFGp5w3sCd6sd_Oz$',$,...)";
    let after = mask_guids(before);
    assert!(after.contains("'GUID'"));
    assert!(!after.contains("2JBHBMFGp5w3sCd6sd_Oz$"));
}

#[test]
fn mask_guids_leaves_short_strings_alone() {
    let before = "lit('Bridge Alignment')";
    let after = mask_guids(before);
    assert_eq!(before, after);
}