/*  DokuWiki MoaiEditor Matcher.js file
    Version : 0.5 (May 5, 2026)
    Author  : MoaiTools <info@moaitools.org>
    License : GPL 3 (http://www.gnu.org/licenses/gpl.html) */

MoaiEditor.Matcher = class {

    constructor(outer) {
    
        this.matches = outer;
        
        // Variables
        this.lines = [];         // array of plain text lines
        this.sections = [];      // array of {prevHeaderIdx, nextHeaderIdx, nodes:[ {i, type, handle, [textContent, innerText ]} 
        
        // Objects
        this.tools = new MoaiEditor.MatchTools(this);
        this.headers = new MoaiEditor.MatchHeaders(this);
        this.section = new MoaiEditor.MatchSection(this);
    }
    // ──────────────────────────────────── 
    onAjax(top, bottom, startline, endline) {
    
        const start = Date.now();
        
        // Get the lines of text to be parsed
        this.lines = moaiEditor.editor.current.watcher.lines.slice(startline, endline);
        
        // Parse html
        this.parseDOM(top, bottom);
        
        // Parse headers
        this.headers.parseText(this.lines);
        this.headers.findAll();
        
        // Parse sections
        for (let section of this.sections) 
            this.section.match(section);
            
        const elapsed = Date.now() - start;
    }
    // ──────────────────────────────────── 
    parseDOM(top, bottom) {
    
        // Reset the arrays
        this.sections = [];
        this.headers.nodes = [];
    
        // Preparations
        var nodes = [];
        var prevHeaderIdx = null;
        var nodeidx = 0;
        var headeridx = 0;
        var started = false;
        if (top === null)
            started = true;
    
        // Iterate the preview nodes
        for (let node of document.querySelectorAll("#moaied__preview_content *")) {
            
            // Ignore nodes before and after the last preview zone
            if (top !== null  &&  top.handle == node)
                started = true;
            if (!started)
                continue;
            if (bottom !== null  &&  bottom.handle == node)
                break;
            
            // If we find a header 
            if (['H1','H2','H3','H4','H5'].includes(node.tagName)) {
            
                // Store the header
                this.headers.nodes.push({
                    i         : headeridx,
                    type      : node.tagName,
                    text      : node.textContent,
                    handle    : node,
                    matchline : null
                });           
                // Create a new section if there is at least one element inside
                if (nodes.length > 0) {
                    this.sections.push({
                        prevHeaderIdx : prevHeaderIdx,
                        nextHeaderIdx : headeridx,
                        nodes      : nodes
                    });
                    nodeidx = 0;
                    nodes = [];
                }
                // Make header clickable
                moaiEditor.scroll.makeElementClickable(node);
                
                // Continue
                prevHeaderIdx = headeridx;
                headeridx += 1;
                continue;
            }
            // Else add the node to the current section
            nodes.push({
                i      : nodeidx,
                type   : node.tagName,
                handle : node,
            });
            nodeidx += 1;
        }
        // Create the last section if there are elements inside
        if (nodes.length > 0)
            this.sections.push({
                prevHeaderIdx : prevHeaderIdx,
                nextHeaderIdx : null,
                nodes      : nodes
            });
        
        // 
        /*
        */
    }
}; // End Class

// ▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆
// ▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆

MoaiEditor.MatchSection = class {

    constructor(outer) {
        
        // Arguments
        this.outer = outer;
        this.tools = outer.tools;
        this.paragraphs = new MoaiEditor.MatchParagraphs(this);
    }
    // ────────────────────────────────────
    match (section) {
        
        // Init variables
        this.text = '';             // Plaintext of this section
        this.lines = [];            // Text lines of this section {text, [cleantext, matched, media, }
        this.blocks = [];           // Blocks of text of this section {i, text, start, end, [cleantext, matched, media, }
        this.section = section;     // {prevHeaderIdx, nextHeaderIdx, nodes:[]} 
        this.startline = null;      // Start line of this section in the main text 
        
        // Get the text for this section (this.text, this.lines, this.blocks)
        this.getSectionText();
        
        
        for (let type of ['P']) 
            if (type == 'P')
                this.paragraphs.match();
        
    }
    // ────────────────────────────────────
    getSectionText () {
    
        // Calc starting and ending lines
        var prevLine = this.outer.headers.nodes[this.section.prevHeaderIdx]?.matchline;
        var nextLine = this.outer.headers.nodes[this.section.nextHeaderIdx]?.matchline;
        if (prevLine === undefined) prevLine = -1;
        if (nextLine === undefined) nextLine = this.outer.lines.length;
        const start = prevLine + 1;
        const end = nextLine - 1;
        this.startline = start;
        
        // Iterate the lines
        var blockStart = 0;
        var block = {text:'', start:0};
        var j = 0;
        var b = 0;
        for (let i = start; i <= end; i++) { 
            const line = this.outer.lines[i];
            this.lines.push({text:line});
            this.text += line + '\n';
            // If line is not empty, add line to the block
            if (line.trim().length > 0) {
                block.text += line + '\n';
            // If line is empty
            } else {
                // If the block is not empty, save it and start a new one
                if (block.text.trim().length > 0) {
                    block.i = b;
                    block.end = j-1;
                    block.text = block.text.trimEnd();
                    this.blocks.push(block);
                    b += 1
                } 
                // Restart the block regardless
                block = {text:'', start:j+1};
            }
            j += 1;
        }
        if (block.text.trim().length > 0) {
            block.i = b;
            block.end = j-1;
            block.text = block.text.trimEnd();
            this.blocks.push(block);
        }
    }
}; // End Class

// ▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆
// ▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆


MoaiEditor.MatchPreformatted = class {

    constructor(outer) {
        this.outer = outer;
        this.tools = outer.tools;
    } 
    // ────────────────────────────────────
    match () {

    }
}; // End Class