/* Creation uses the existing command parser and case command endpoints. */
(function(root,factory){
    const api=factory();
    if(typeof module==='object'&&module.exports)module.exports=api;
    if(root && root.document) api.init(root);
})(typeof window!=='undefined'?window:null,function(){
    'use strict';
    class CommandRun {
        constructor(request,uuid){this.request=request;this.uuid=uuid;this.pending=null;}
        attach(caseId,commands){
            if(!commands.length)return;
            this.pending={caseId,body:{request_id:this.uuid(),comment:'',internal:true,billing_mode:'automatic',commands}};
        }
        async execute(){
            if(!this.pending)return;
            const {caseId,body}=this.pending;
            await this.request(`/api/v1/sag/${caseId}/command-execute`,body);
            this.pending=null;
            return caseId;
        }
    }
    function init(root){
        const doc=root.document, input=doc.getElementById('beskrivelse');
        if(!input || !root.CaseCommands || !root.CaseCommandSuggestions)return;
        const config=JSON.parse(doc.getElementById('caseCreateCommandData').textContent);
        const values={users:(config.users||[]).map(user=>({...user,full_name:user.full_name,username:user.username||user.display_name})),groups:config.groups||[]};
        const panel=doc.createElement('section');panel.className='cc-command-tools';
        const toolbar=doc.createElement('div');toolbar.className='cc-command-toolbar';
        const hint=doc.createElement('small');hint.textContent='Skriv / på en ny linje for handlinger.';
        const help=doc.createElement('details'),summary=doc.createElement('summary');summary.textContent='/ Hjælp';
        const helpList=doc.createElement('div');helpList.className='cc-command-help';help.append(summary,helpList);
        const suggestions=doc.createElement('div');suggestions.className='case-command-suggestions';
        const preview=doc.createElement('div');preview.className='cc-command-preview';preview.setAttribute('aria-live','polite');
        const recovery=doc.createElement('div');recovery.className='cc-command-recovery';recovery.hidden=true;
        toolbar.append(hint,help);panel.append(toolbar,suggestions,preview,recovery);input.after(panel);
        let active=-1, options=[],storageKey=null,prepared=null;
        const request=async(url,body)=>{
            const response=await root.fetch(url,{method:'POST',credentials:'include',headers:{'Content-Type':'application/json'},body:JSON.stringify(body)});
            const data=await response.json();
            if(!response.ok){
                const error=new Error(typeof data.detail==='string'?data.detail:'Kommandoerne kunne ikke udføres.');
                error.definite=[400,403,404,409,422].includes(response.status);
                throw error;
            }
            return data;
        };
        const run=new CommandRun(request,()=>root.crypto.randomUUID());
        const ready=(async()=>{
            try {
                const response=await root.fetch('/api/v1/auth/me',{credentials:'include'});
                if(!response.ok)return;
                const actor=await response.json();
                if(!actor.id && !actor.user_id)return;
                storageKey=`bmc:create-command-run:${actor.id||actor.user_id}`;
                const stored=root.sessionStorage.getItem(storageKey);
                if(stored){run.pending=JSON.parse(stored);if(run.pending.draftText)input.value=run.pending.draftText;}
            } catch(_) { /* The current page still supports an in-memory retry. */ }
            showRecovery();
        })();
        function persist(){try{if(storageKey){if(run.pending)root.sessionStorage.setItem(storageKey,JSON.stringify(run.pending));else root.sessionStorage.removeItem(storageKey);}}catch(_){}}
        function showRecovery(){
            recovery.replaceChildren();recovery.hidden=!run.pending;
            if(!run.pending)return;
            input.readOnly=!run.pending.canEdit;
            const link=doc.createElement('a');link.href=`/sag/${run.pending.caseId}/v5`;link.textContent=`Åbn den oprettede sag #${run.pending.caseId}`;
            recovery.append(doc.createTextNode('Sagen er oprettet. Kommandoerne afventer. '),link);
            doc.getElementById('submitBtn').textContent=run.pending.canEdit?'Gem rettede kommandoer':'Prøv kommandoerne igen';
        }
        function line(){const start=input.value.lastIndexOf('\n',input.selectionStart-1)+1;const end=input.value.indexOf('\n',input.selectionStart);return {start,text:input.value.slice(start,end<0?input.value.length:end)};}
        function choose(option){
            if(input.readOnly)return;
            const current=line();
            input.setRangeText(option.value,current.start+option.from,current.start+option.to,'end');
            if(option.caret!==undefined){const caret=current.start+option.from+option.caret;input.setSelectionRange(caret,caret);}
            input.focus();update();input.dispatchEvent(new root.Event('input',{bubbles:true}));
        }
        function renderSuggestions(){
            suggestions.replaceChildren();active=-1;
            const current=line();options=root.CaseCommandSuggestions.suggest(current.text,input.selectionStart-current.start,values);
            options.forEach(option=>{
                const button=doc.createElement('button');button.type='button';
                const title=doc.createElement('strong');title.textContent=option.label;
                const detail=doc.createElement('small');detail.textContent=option.hint;
                button.append(title,detail);button.addEventListener('click',()=>choose(option));suggestions.append(button);
            });
        }
        function update(){
            if(run.pending){showRecovery();if(!run.pending.canEdit)return;}
            const current=line(),cursor=input.selectionStart-current.start;
            if(cursor===current.text.length && /\s$/.test(current.text)){
                const option=root.CaseCommandSuggestions.suggest(current.text,cursor,values).find(row=>row.value==='"" '&&row.from===cursor);
                if(option){input.setRangeText('""',input.selectionStart,input.selectionStart,'end');const caret=current.start+cursor+1;input.setSelectionRange(caret,caret);}
            }
            const parsed=root.CaseCommands.parse(input.value);
            if(parsed.commands.some(command=>command.type==='help'))help.open=true;
            preview.replaceChildren();
            parsed.commands.forEach(command=>{
                const chip=doc.createElement('span');chip.className='cc-command-chip';
                const target=command.scope==='main'?'Ny sag':`Undersag ${command.scope+1}`;
                const name=root.CaseCommands.names.find(name=>({tid:'time',tildel:'assign',forventet:'estimate',undersag:'subcase',mig:'self',afventer:'waiting',løsning:'solution',udsat:'defer',fil:'file',hjælp:'help',prioritet:'priority',gruppe:'group'}[name]||name)===command.type)||command.type;
                chip.textContent=`/${name} · ${command.title||command.assignee||command.minutes&&command.minutes+' min'||command.date||command.action||target} · ${target}`;
                preview.append(chip);
            });
            if(parsed.errors.length){const error=doc.createElement('small');error.className='text-danger';error.textContent=parsed.errors.map(error=>`Linje ${error.line}: ${error.message}`).join(' · ');preview.append(error);}
            renderSuggestions();
        }
        root.CaseCommands.names.forEach(name=>{
            const button=doc.createElement('button');button.type='button';button.textContent='/'+name;
            button.addEventListener('click',()=>{
                if(input.readOnly)return;
                const prefix=input.value&&!input.value.endsWith('\n')?'\n':'';
                input.value+=prefix+'/'+name+' ';input.setSelectionRange(input.value.length,input.value.length);input.focus();update();input.dispatchEvent(new root.Event('input',{bubbles:true}));
            });helpList.append(button);
        });
        input.addEventListener('input',update);input.addEventListener('click',renderSuggestions);
        input.addEventListener('keydown',event=>{
            if(event.isComposing||event.ctrlKey||event.metaKey||event.altKey||event.shiftKey)return;
            if(event.key==='Escape'){suggestions.replaceChildren();options=[];active=-1;return;}
            if(event.key==='ArrowDown'||event.key==='ArrowUp'){
                if(!options.length)return;event.preventDefault();active=(active+(event.key==='ArrowDown'?1:-1)+options.length)%options.length;
                [...suggestions.children].forEach((button,index)=>button.classList.toggle('is-active',index===active));return;
            }
            if(event.key!=='Enter'||input.selectionStart!==input.selectionEnd)return;
            const current=line(),cursor=input.selectionStart-current.start;
            if(active<0&&/^\s*\/\/?\S+/.test(current.text)){
                let opening=-1;
                for(let index=0;index<current.text.length;index++){
                    if(current.text[index]==='\\'&&opening>=0&&['"','\\'].includes(current.text[index+1])){index++;continue;}
                    if(current.text[index]!=='"')continue;
                    if(opening<0)opening=index;
                    else {if(cursor>opening&&cursor<=index){event.preventDefault();const end=current.start+current.text.length;input.setRangeText('\n',end,end,'end');update();input.dispatchEvent(new root.Event('input',{bubbles:true}));return;}opening=-1;}
                }
            }
            if(options.length){event.preventDefault();choose(options[active>=0?active:0]);}
        });
        root.caseCreateCommands={
            ready,
            prepare(){
                const parsed=root.CaseCommands.parse(input.value);
                if(parsed.errors.length)throw new Error(parsed.errors.map(error=>`Linje ${error.line}: ${error.message}`).join(' · '));
                if(!parsed.comment)throw new Error('Skriv også en beskrivelse af sagen over kommandoerne.');
                if(parsed.commands.some(command=>command.type==='file'))throw new Error('Vedhæft filer på sagen efter oprettelse. Fjern /fil før du opretter.');
                prepared=parsed;return parsed;
            },
            hasPending:()=>Boolean(run.pending),
            async created(result){run.attach(result.id,prepared?.commands||[]);if(run.pending)run.pending.draftText=input.value;persist();showRecovery();await this.retry();},
            async retry(){
                if(!run.pending)return;
                if(run.pending.canEdit){
                    const caseId=run.pending.caseId;
                    const parsed=this.prepare();
                    run.attach(caseId,parsed.commands);
                    // An empty command list explicitly finishes the remaining step.
                    if(!parsed.commands.length){run.pending=null;persist();return;}
                    run.pending.draftText=input.value;persist();
                }
                input.readOnly=true;
                try {await run.execute();persist();showRecovery();}
                catch(error){run.pending.canEdit=Boolean(error.definite);persist();showRecovery();throw new Error(`Sag #${run.pending.caseId} er oprettet, men kommandoerne afventer: ${error.message}`);}
                finally {input.readOnly=Boolean(run.pending&&!run.pending.canEdit);}
            },
            setCreating:busy=>{input.readOnly=busy||Boolean(run.pending&&!run.pending.canEdit);},
            pendingCaseId:()=>run.pending?.caseId
        };
        update();
    }
    return {CommandRun,init};
});