// DOCX 文本抽检：docx-rs 0.4 读段落，关键词匹配
use std::future::Future;
use std::path::Path;
use std::pin::Pin;
use std::sync::atomic::AtomicBool;

use docx_rs::{DocumentChild, ParagraphChild, RunChild, TableCellContent, TableChild, TableRowChild};

use crate::config::AppConfig;
use crate::inspect::{make_hit, Finding, Inspector};
use crate::matcher::keywords::{keywords_for, Matcher};

pub struct DocxInspector;

impl Inspector for DocxInspector {
    fn inspect<'a>(
        &'a self,
        path: &'a Path,
        cfg: &'a AppConfig,
        _cancel: &'a AtomicBool,
        log: &'a (dyn Fn(&str) + Send + Sync),
    ) -> Pin<Box<dyn Future<Output = anyhow::Result<Finding>> + Send + 'a>> {
        Box::pin(async move {
            log("  解析 DOCX 文本……");
            let bytes = std::fs::read(path)?;
            // docx-rs 0.4：使用 read_docx 解析整个 zip
            let doc = docx_rs::read_docx(&bytes).map_err(|e| anyhow::anyhow!("docx-rs 解析失败：{:?}", e))?;

            let mut text = String::new();
            for d in doc.document.children.iter() {
                match d {
                    DocumentChild::Paragraph(p) => {
                        // p: &Box<Paragraph>
                        for pc in p.children.iter() {
                            if let ParagraphChild::Run(r) = pc {
                                for rc in r.children.iter() {
                                    if let RunChild::Text(t) = rc {
                                        text.push_str(&t.text);
                                    }
                                }
                            }
                        }
                        text.push('\n');
                    }
                    DocumentChild::Table(t) => {
                        // t: &Box<Table>；t.rows: Vec<TableChild>
                        for tc in t.rows.iter() {
                            if let TableChild::TableRow(row) = tc {
                                for rc in row.cells.iter() {
                                    if let TableRowChild::TableCell(cell) = rc {
                                        for cc in cell.children.iter() {
                                            if let TableCellContent::Paragraph(p) = cc {
                                                for pc in p.children.iter() {
                                                    if let ParagraphChild::Run(r) = pc {
                                                        for rcc in r.children.iter() {
                                                            if let RunChild::Text(t) = rcc {
                                                                text.push_str(&t.text);
                                                            }
                                                        }
                                                    }
                                                }
                                                text.push('\n');
                                            }
                                        }
                                    }
                                    text.push('\t');
                                }
                                text.push('\n');
                            }
                        }
                    }
                    _ => {}
                }
            }
            let kws = keywords_for("docx", &cfg.keyword);
            let m = Matcher::new(kws, &cfg.keyword);
            let hits = m.find(&text);
            Ok(make_hit(path, "docx", hits, text, None))
        })
    }
}