/**
 * Swarm Assistent — patch detection / extraction / alias normalization.
 * Loaded before assistent.js; mirrors AssistentPatch.cs on the server side.
 */
window.SA = window.SA || {};

(function () {
    const PATCH_KEYS = [
        'prompt', 'loras', 'width', 'height', 'steps', 'cfg', 'seed', 'sigma_shift', 'sampler',
        'actions', 'search_query', 'civitai_query',
        'use_init_image', 'clear_init_image', 'init_creativity', 'denoise',
        'use_mask_image', 'clear_mask_image', 'mask_blur', 'mask_grow',
        'look_at', 'vision_from', 'vision_slots', 'slot_to_init', 'slot_to_mask',
        'snapshot_generate', 'select_slot', 'aspect', 'images', 'batch', 'vary', 'lock_seed',
        'creativity', 'intensity', 'complexity', 'movement',
        'clear_prompt_images', 'slot_to_prompt_image', 'pack',
        'memories', 'memory_query', 'memory_kind', 'tag_query', 'user_prefs',
        'controls', 'persona_clone', 'persona_shelves', 'persona', 'notes',
    ];

    const FENCE_RE = /```(?:json)?\s*([\s\S]*?)```/gi;

    function has(obj, key) {
        return obj[key] !== undefined && obj[key] !== null;
    }

    /** True when the object looks like a generation patch rather than arbitrary JSON. */
    function isPatchObject(obj) {
        if (!obj || typeof obj !== 'object') {
            return false;
        }
        return PATCH_KEYS.some((k) => has(obj, k));
    }

    /** Maps alias fields onto canonical names, keeping the aliases in place. */
    function normalizePatch(patch) {
        if (!patch || typeof patch !== 'object') {
            return patch;
        }
        if (!has(patch, 'search_query') && has(patch, 'civitai_query')) {
            patch.search_query = patch.civitai_query;
        }
        if (!has(patch, 'init_creativity') && has(patch, 'denoise')) {
            patch.init_creativity = patch.denoise;
        }
        if (!has(patch, 'look_at')) {
            if (has(patch, 'vision_from')) {
                patch.look_at = patch.vision_from;
            } else if (has(patch, 'vision_slots')) {
                patch.look_at = patch.vision_slots;
            }
        }
        return patch;
    }

    /** Splits a reply into prose and the last fenced patch object found in it. */
    function extractPatch(text) {
        if (!text) {
            return { prose: text || '', patch: null };
        }
        const re = new RegExp(FENCE_RE.source, 'gi');
        let match;
        let lastPatch = null;
        let prose = text;
        while ((match = re.exec(text)) !== null) {
            try {
                const obj = JSON.parse(match[1].trim());
                if (isPatchObject(obj)) {
                    lastPatch = normalizePatch(obj);
                    prose = (text.slice(0, match.index) + text.slice(match.index + match[0].length)).trim();
                }
            } catch (e) { /* not json */ }
        }
        return { prose, patch: lastPatch };
    }

    SA.PATCH_KEYS = PATCH_KEYS;
    SA.isPatchObject = isPatchObject;
    SA.normalizePatch = normalizePatch;
    SA.extractPatch = extractPatch;
})();