/* ===== Generation Logic ===== */
window.NAIGenerate = {
    collectParams() {
        return {
            model: $('#model-select').value,
            prompt: $('#prompt-input').value.trim(),
            quality_prompt: $('#quality-input').value.trim(),
            negative_prompt: $('#negative-input').value.trim(),
            sampler: $('#sampler-select').value,
            cfg_scale: parseFloat($('#cfg-slider').value),
            steps: parseInt($('#steps-slider').value),
            seed: parseInt($('#seed-input').value) || -1,
            width: parseInt($('#width-slider').value),
            height: parseInt($('#height-slider').value),
            save_to_cloud: window.NAISettings ? NAISettings.get('saveToCloud') : ($('#save-to-cloud')?.checked ?? true),
        };
    },

    collectVibeParams() {
        const model = $('#model-select').value;
        const v4 = model.startsWith('nai-diffusion-4');
        const strNorm = $('#vibe-str-normalize');

        if (v4) {
            return {
                mode: 'v4',
                vibes: NAIState.vibeFiles.map(vf => {
                    const ek = model.endsWith('full') ? 'v4full' : 'v4curated';
                    const encodings = vf.data.encodings?.[ek] || {};
                    const firstKey = Object.keys(encodings)[0];
                    const enc = firstKey ? encodings[firstKey] : null;
                    return {
                        encoding: enc?.encoding || '',
                        info_extract: enc?.params?.information_extracted ?? 1,
                        strength: vf.strength ?? 0.6,
                    };
                }).filter(v => v.encoding),
                normalize_strength: strNorm ? strNorm.checked : true,
            };
        }
        return {
            mode: 'legacy',
            images: NAIState.vibeRefImages.map(ri => ({
                b64: NAIUtils.dataUrlToBase64(ri.dataUrl),
                info_extract: ri.infoExtract,
                strength: ri.strength,
            })),
            normalize_strength: strNorm ? strNorm.checked : true,
        };
    },

    startGeneration() {
        const state = NAIState;
        if (state.generating || state.vibeEncoding || !state.wsReady) return;

        // Auto-convert unconverted ref images for v4
        if (NAIVibe.isV4Model() && state.vibeRefImages.length > 0) {
            NAIVibe.startEncode(true);
            return;
        }
        this.doGenerate();
    },

    doGenerate() {
        if (NAIState.generating) return;
        NAIState.generating = true;

        const btn = $('#btn-generate');
        btn.disabled = true;
        btn.classList.add('generating');
        btn.textContent = '生成中...';
        NAITimer.start();

        const charParams = NAICharacter.collectParams();
        const referenceParams = NAIReference.collectParams();
        const advParams = NAIAdvanced.collectParams();

        NAIWS.send({
            action: 'generate',
            params: this.collectParams(),
            vibe: this.collectVibeParams(),
            extra_input: NAIExtraInput.collectParams(),
            character: charParams,
            reference: referenceParams,
            advanced: advParams,
        });
    },

    onResult(data) {
        NAIState.generating = false;
        const btn = $('#btn-generate');
        btn.disabled = false;
        btn.classList.remove('generating');
        btn.textContent = '生成';

        NAIWS.updateStatus('生成完成 ✓', false);
        NAITimer.stop(true);
        
        // Refresh anlas after generation
        NAICost.fetchAnlas();

        if (data.image) {
            const img_area = $('#result-image-area');
            img_area.innerHTML =
                `<img src="data:image/png;base64,` + data.image + `" class="gen-result-image">`;
            const img = img_area.querySelector('img');
            const badge = document.createElement('button');
            badge.className = 'download-card-badge';
            badge.textContent = '💾';
            img_area.appendChild(badge);
            img.addEventListener('click', () => {
                if (document.fullscreenElement) {    
                    document.exitFullscreen(); 
                } else {  
                    img.requestFullscreen();       
                }
            });
            badge.addEventListener('click', () => {
                const link = document.createElement('a');
                link.href = `data:image/png;base64,${data.image}`;
                link.download = `nai_image_${Date.now()}.png`;
                document.body.appendChild(link);
                link.click();
                document.body.removeChild(link);
            });
        }

        if (data.seed !== undefined) NAIState.lastSeed = data.seed;

        const params = this.collectParams();

        // Save to history with searchable text
        if (data.image) {
            NAIHistory.saveWithSearch(data.image, 'generate', {
                ...params, seed: data.seed,
            });
        }

        const rows = {
            Model: params.model, Seed: data.seed, Sampler: params.sampler,
            'CFG Scale': params.cfg_scale, Steps: params.steps,
            Size: `${params.width}x${params.height}`,
        };
        let html = '';
        for (const [k, v] of Object.entries(rows)) {
            html += `<div class="info-row"><span class="info-key">${k}:</span><span class="info-value">${v}</span></div>`;
        }
        $('#result-info-content').innerHTML = html;
    },

    onError(message) {
        NAIState.generating = false;
        const btn = $('#btn-generate');
        btn.disabled = false;
        btn.classList.remove('generating');
        btn.textContent = '生成';
        NAIWS.updateStatus(`错误: ${message}`, false);
        NAITimer.stop(false);
    },
};