/**
 * CreateSessionWizard — 3-step wizard for creating a team meeting session.
 *
 * Step 1: Name & Description
 * Step 2: Select Personas (drag-style multi-select from available list)
 * Step 3: Settings (turn mode, agenda)
 *
 * Simple, easy-to-use flow modeled after the Agent project wizard.
 */
import React, { useState, useCallback } from 'react';
import { X, ChevronLeft, ChevronRight, Users, Settings, FileText, Check, Zap, MessageSquare, Crown, Activity, Workflow, DollarSign, } from 'lucide-react';
import { PersonaSelectorEnterprise } from './PersonaSelectorEnterprise';
import { TEAM_BUNDLES } from './teamBundles';
// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------
const TURN_MODES = [
    {
        value: 'reactive',
        label: 'Reactive (Recommended)',
        description: 'Only relevant personas speak — best for brainstorming and productivity',
        icon: <Activity size={16}/>,
    },
    {
        value: 'round-robin',
        label: 'Round Robin',
        description: 'Each persona responds in order after you speak',
        icon: <Zap size={16}/>,
    },
    {
        value: 'free-form',
        label: 'Free Form',
        description: 'Personas respond naturally as in a real conversation',
        icon: <MessageSquare size={16}/>,
    },
    {
        value: 'moderated',
        label: 'Moderated',
        description: 'You choose which persona speaks next',
        icon: <Crown size={16}/>,
    },
];
const ENGINE_OPTIONS = [
    {
        value: 'native',
        label: 'Conversation',
        description: 'Free-form discussion with smart speaker selection',
        icon: <MessageSquare size={16}/>,
    },
    {
        value: 'crew',
        label: 'Task Workflow',
        description: 'Stage-based collaboration with structured output',
        icon: <Workflow size={16}/>,
    },
];
const CREW_PROFILES = [
    { id: 'task_planner_v1', label: 'Task Planner', description: 'Steps, details, review, and finalize' },
    { id: 'brainstorm_v1', label: 'Brainstorm', description: 'Ideate, evaluate, and recommend' },
    { id: 'draft_and_edit_v1', label: 'Draft & Edit', description: 'Outline, draft, and refine content' },
];
// ---------------------------------------------------------------------------
// Component
// ---------------------------------------------------------------------------
export function CreateSessionWizard({ personas, backendUrl, onCancel, onCreate, }) {
    const [step, setStep] = useState(1);
    const totalSteps = 3;
    // Step 1
    const [name, setName] = useState('');
    const [description, setDescription] = useState('');
    // Step 2
    const [selectedIds, setSelectedIds] = useState(new Set());
    // Step 3
    const [engine, setEngine] = useState('native');
    const [crewProfileId, setCrewProfileId] = useState('task_planner_v1');
    const [budgetLimit, setBudgetLimit] = useState('');
    const [turnMode, setTurnMode] = useState('reactive');
    const [agendaText, setAgendaText] = useState('');
    const [creating, setCreating] = useState(false);
    const togglePersona = useCallback((id) => {
        setSelectedIds((prev) => {
            const next = new Set(prev);
            if (next.has(id))
                next.delete(id);
            else
                next.add(id);
            return next;
        });
    }, []);
    const canProceed = step === 1 ? name.trim().length > 0
        : step === 2 ? selectedIds.size > 0
            : true;
    const handleCreate = useCallback(async () => {
        if (creating)
            return;
        setCreating(true);
        try {
            const agenda = agendaText
                .split('\n')
                .map((l) => l.trim())
                .filter(Boolean);
            const policy = engine === 'crew'
                ? {
                    engine: 'crew',
                    crew: {
                        profile_id: crewProfileId,
                        ...(budgetLimit ? { budget_limit_eur: parseFloat(budgetLimit) } : {}),
                    },
                }
                : { engine: 'native' };
            await onCreate({
                name: name.trim(),
                description: description.trim(),
                participant_ids: Array.from(selectedIds),
                turn_mode: turnMode,
                agenda,
                policy,
            });
        }
        catch (e) {
            console.error('Failed to create session:', e);
        }
        finally {
            setCreating(false);
        }
    }, [creating, name, description, selectedIds, turnMode, agendaText, engine, crewProfileId, budgetLimit, onCreate]);
    return (<div className="h-full w-full bg-black text-white font-sans overflow-hidden flex flex-col min-h-0">

      {/* ═══════════════ HEADER ═══════════════ */}
      <div className="flex-shrink-0 flex items-center justify-between px-6 py-4 border-b border-white/[0.06]">
        <div className="flex items-center gap-3">
          <Users size={18} className="text-cyan-400"/>
          <span className="text-sm font-semibold">New Team Session</span>
        </div>
        <button onClick={onCancel} className="p-2 rounded-lg hover:bg-white/5 text-white/40 hover:text-white/60 transition-colors">
          <X size={16}/>
        </button>
      </div>

      {/* ═══════════════ STEP INDICATOR ═══════════════ */}
      <div className="flex-shrink-0 px-6 py-3 flex items-center gap-2">
        {[
            { n: 1, label: 'Details', icon: <FileText size={12}/> },
            { n: 2, label: 'Personas', icon: <Users size={12}/> },
            { n: 3, label: 'Settings', icon: <Settings size={12}/> },
        ].map(({ n, label, icon }) => (<React.Fragment key={n}>
            {n > 1 && <div className={`flex-1 h-px ${step >= n ? 'bg-cyan-500/40' : 'bg-white/[0.06]'}`}/>}
            <div className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-medium transition-colors ${step === n
                ? 'bg-cyan-500/15 text-cyan-300 border border-cyan-500/20'
                : step > n
                    ? 'bg-emerald-500/10 text-emerald-300 border border-emerald-500/20'
                    : 'bg-white/[0.03] text-white/30 border border-white/[0.06]'}`}>
              {step > n ? <Check size={12}/> : icon}
              {label}
            </div>
          </React.Fragment>))}
      </div>

      {/* ═══════════════ STEP CONTENT ═══════════════ */}
      <div className="flex-1 min-h-0 overflow-y-auto px-6 py-4 scrollbar-hide">

        {/* Step 1: Details */}
        {step === 1 && (<div className="max-w-lg mx-auto space-y-5">
            <div>
              <h2 className="text-lg font-semibold text-white mb-1">Name your session</h2>
              <p className="text-xs text-white/35">Give your meeting room a name and optional description.</p>
            </div>

            <div className="space-y-3">
              <div>
                <label className="block text-xs text-white/50 mb-1.5">Session Name</label>
                <input type="text" value={name} onChange={(e) => setName(e.target.value)} placeholder="e.g., Morning Standup, Strategy Review..." className="w-full px-3.5 py-2.5 rounded-xl bg-white/[0.04] border border-white/[0.08] text-sm text-white placeholder:text-white/20 focus:outline-none focus:border-cyan-500/40 transition-colors" autoFocus/>
              </div>

              <div>
                <label className="block text-xs text-white/50 mb-1.5">Description (optional)</label>
                <textarea value={description} onChange={(e) => setDescription(e.target.value)} placeholder="What's this session about?" rows={3} className="w-full px-3.5 py-2.5 rounded-xl bg-white/[0.04] border border-white/[0.08] text-sm text-white placeholder:text-white/20 focus:outline-none focus:border-cyan-500/40 transition-colors resize-none"/>
              </div>
            </div>
          </div>)}

        {/* Step 2: Select Personas (Enterprise) */}
        {step === 2 && (<div className="max-w-5xl mx-auto">
            <PersonaSelectorEnterprise personas={personas} backendUrl={backendUrl} selectedIds={selectedIds} onToggle={togglePersona} onSetSelected={setSelectedIds} bundles={TEAM_BUNDLES}/>
          </div>)}

        {/* Step 3: Settings */}
        {step === 3 && (<div className="max-w-lg mx-auto space-y-5">
            <div>
              <h2 className="text-lg font-semibold text-white mb-1">Session settings</h2>
              <p className="text-xs text-white/35">Choose how the conversation flows and set an optional agenda.</p>
            </div>

            {/* Engine type */}
            <div>
              <label className="block text-xs text-white/50 mb-2">Session Type</label>
              <div className="flex gap-2">
                {ENGINE_OPTIONS.map((opt) => (<button key={opt.value} type="button" onClick={() => setEngine(opt.value)} className={`flex-1 flex items-center gap-3 p-3 rounded-xl border transition-all text-left ${engine === opt.value
                    ? 'bg-cyan-500/[0.08] border-cyan-500/30'
                    : 'bg-white/[0.02] border-white/[0.06] hover:border-white/15'}`}>
                    <div className={`w-8 h-8 rounded-lg flex items-center justify-center ${engine === opt.value ? 'bg-cyan-500/20 text-cyan-300' : 'bg-white/5 text-white/30'}`}>
                      {opt.icon}
                    </div>
                    <div className="flex-1">
                      <div className="text-sm font-medium text-white">{opt.label}</div>
                      <div className="text-[10px] text-white/35">{opt.description}</div>
                    </div>
                    {engine === opt.value && (<div className="w-5 h-5 rounded-full bg-cyan-500 flex items-center justify-center">
                        <Check size={12} className="text-white"/>
                      </div>)}
                  </button>))}
              </div>
            </div>

            {/* Crew workflow settings (only when engine === 'crew') */}
            {engine === 'crew' && (<div className="space-y-3 rounded-xl border border-cyan-500/15 bg-cyan-500/[0.03] p-4">
                <div>
                  <label className="block text-xs text-white/50 mb-2">Workflow Profile</label>
                  <div className="space-y-2">
                    {CREW_PROFILES.map((profile) => (<button key={profile.id} type="button" onClick={() => setCrewProfileId(profile.id)} className={`w-full flex items-center gap-3 p-2.5 rounded-lg border transition-all text-left ${crewProfileId === profile.id
                        ? 'bg-cyan-500/[0.08] border-cyan-500/25'
                        : 'bg-white/[0.02] border-white/[0.06] hover:border-white/15'}`}>
                        <div className="flex-1">
                          <div className="text-sm font-medium text-white">{profile.label}</div>
                          <div className="text-[10px] text-white/35">{profile.description}</div>
                        </div>
                        {crewProfileId === profile.id && (<div className="w-4 h-4 rounded-full bg-cyan-500 flex items-center justify-center">
                            <Check size={10} className="text-white"/>
                          </div>)}
                      </button>))}
                  </div>
                </div>
                <div>
                  <label className="block text-xs text-white/50 mb-1.5">Budget Limit (optional)</label>
                  <div className="flex items-center gap-2">
                    <DollarSign size={14} className="text-white/30"/>
                    <input type="number" value={budgetLimit} onChange={(e) => setBudgetLimit(e.target.value)} placeholder="No limit" min="0" step="5" className="flex-1 px-3 py-2 rounded-lg bg-white/[0.04] border border-white/[0.08] text-sm text-white placeholder:text-white/20 focus:outline-none focus:border-cyan-500/40 transition-colors"/>
                  </div>
                </div>
              </div>)}

            {/* Turn mode (only visible for native engine) */}
            {engine === 'native' && (<div>
              <label className="block text-xs text-white/50 mb-2">Conversation Style</label>
              <div className="space-y-2">
                {TURN_MODES.map((tm) => (<button key={tm.value} type="button" onClick={() => setTurnMode(tm.value)} className={`w-full flex items-center gap-3 p-3 rounded-xl border transition-all text-left ${turnMode === tm.value
                        ? 'bg-cyan-500/[0.08] border-cyan-500/30'
                        : 'bg-white/[0.02] border-white/[0.06] hover:border-white/15'}`}>
                    <div className={`w-8 h-8 rounded-lg flex items-center justify-center ${turnMode === tm.value ? 'bg-cyan-500/20 text-cyan-300' : 'bg-white/5 text-white/30'}`}>
                      {tm.icon}
                    </div>
                    <div className="flex-1">
                      <div className="text-sm font-medium text-white">{tm.label}</div>
                      <div className="text-[10px] text-white/35">{tm.description}</div>
                    </div>
                    {turnMode === tm.value && (<div className="w-5 h-5 rounded-full bg-cyan-500 flex items-center justify-center">
                        <Check size={12} className="text-white"/>
                      </div>)}
                  </button>))}
              </div>
            </div>)}

            {/* Agenda */}
            <div>
              <label className="block text-xs text-white/50 mb-1.5">Agenda (optional, one topic per line)</label>
              <textarea value={agendaText} onChange={(e) => setAgendaText(e.target.value)} placeholder={"Status updates\nBlockers\nAction items"} rows={4} className="w-full px-3.5 py-2.5 rounded-xl bg-white/[0.04] border border-white/[0.08] text-sm text-white placeholder:text-white/20 focus:outline-none focus:border-cyan-500/40 transition-colors resize-none"/>
            </div>

            {/* Summary */}
            <div className="rounded-xl border border-white/[0.06] bg-white/[0.02] p-4 space-y-2">
              <div className="text-xs text-white/50 font-medium">Summary</div>
              <div className="text-sm text-white font-medium">{name || 'Untitled'}</div>
              <div className="flex items-center gap-3 text-[11px] text-white/40">
                <span className="flex items-center gap-1">
                  <Users size={10}/>
                  {selectedIds.size} persona{selectedIds.size !== 1 ? 's' : ''} + You
                </span>
                <span className="flex items-center gap-1">
                  {ENGINE_OPTIONS.find((e) => e.value === engine)?.icon}
                  {ENGINE_OPTIONS.find((e) => e.value === engine)?.label}
                </span>
                {engine === 'native' && (<span className="flex items-center gap-1">
                    {TURN_MODES.find((t) => t.value === turnMode)?.icon}
                    {TURN_MODES.find((t) => t.value === turnMode)?.label}
                  </span>)}
                {engine === 'crew' && (<span className="flex items-center gap-1 text-cyan-300/50">
                    <Workflow size={10}/>
                    {CREW_PROFILES.find((p) => p.id === crewProfileId)?.label}
                  </span>)}
              </div>
            </div>
          </div>)}
      </div>

      {/* ═══════════════ FOOTER ═══════════════ */}
      <div className="flex-shrink-0 px-6 py-4 border-t border-white/[0.06] flex items-center justify-between">
        <button onClick={step > 1 ? () => setStep((s) => s - 1) : onCancel} className="flex items-center gap-1.5 px-4 py-2 rounded-xl text-sm text-white/50 hover:text-white/70 bg-white/[0.04] hover:bg-white/[0.08] border border-white/[0.06] transition-all">
          <ChevronLeft size={14}/>
          {step > 1 ? 'Back' : 'Cancel'}
        </button>

        <div className="text-xs text-white/20">
          Step {step} of {totalSteps}
        </div>

        <button onClick={step < totalSteps ? () => setStep((s) => s + 1) : handleCreate} disabled={!canProceed || creating} className={`flex items-center gap-1.5 px-5 py-2 rounded-xl text-sm font-semibold transition-all ${canProceed && !creating
            ? step < totalSteps
                ? 'bg-cyan-600 hover:bg-cyan-500 text-white border border-cyan-500/20'
                : 'bg-gradient-to-r from-cyan-600 to-blue-600 hover:brightness-110 text-white border border-cyan-500/20 shadow-lg shadow-cyan-500/10'
            : 'bg-white/[0.04] text-white/20 border border-white/[0.04] cursor-not-allowed'}`}>
          {creating ? ('Creating...') : step < totalSteps ? (<>Next <ChevronRight size={14}/></>) : (<>Create Session <Check size={14}/></>)}
        </button>
      </div>

      <style>{`
        .scrollbar-hide::-webkit-scrollbar { display: none; }
        .scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }
      `}</style>
    </div>);
}