export const requirementKinds = ['round', 'matches', 'populated-minutes', 'player-hours', 'population',
    'sustained-population', 'healthy-minutes', 'failure-budget', 'restart-budget', 'clean-logs', 'recovery', 'feature', 'manual'] as const;
export type RequirementKind = typeof requirementKinds[number];
export interface BetaRequirement {
    id: string;
    kind: RequirementKind;
    target: number;
    label: string;
    minRound: number;
    minPlayers: number;
    minMinutes: number;
    event: string;
}
export interface BetaPlan {
    version: 1;
    requirements: BetaRequirement[];
    scope: 'all' | 'quorum' | 'map' | 'game' | 'map-game';
    quorum: number;
    timeoutHours: number;
    failureAction: 'fail' | 'pause' | 'rollback';
    rollbackRestart: 'manual' | 'when-empty';
    waveSize: number; // 0 deploys all selected servers; otherwise pass each wave before expanding.
}
export const requirementLabels: Record<RequirementKind, string> = {
    round: 'Reach round', matches: 'Complete qualifying matches', 'populated-minutes': 'Populated minutes',
    'player-hours': 'Player-hours', population: 'Reach player count', 'sustained-population': 'Sustained population (minutes)',
    'healthy-minutes': 'Continuous healthy minutes', 'failure-budget': 'Maximum health outages',
    'restart-budget': 'Maximum unexpected restarts',
    'clean-logs': 'Maximum script errors', recovery: 'Successful recovery cycles', feature: 'Feature event count', manual: 'Tester checklist'
};
export function requirement(kind: RequirementKind, id: string): BetaRequirement {
    return { id, kind, label: requirementLabels[kind], target: kind === 'round' ? 25 : ['failure-budget', 'restart-budget', 'clean-logs'].includes(kind) ? 0 : 1,
        minRound: 0, minPlayers: 1, minMinutes: 0, event: '' };
}
export function defaultPlan(): BetaPlan {
    return { version: 1, requirements: [requirement('healthy-minutes', 'health')], scope: 'all', quorum: 1,
        timeoutHours: 24, failureAction: 'fail', rollbackRestart: 'when-empty', waveSize: 0 };
}
export const builtInPlans: Array<{ name: string; plan: BetaPlan }> = [
    { name: 'Quick smoke test', plan: defaultPlan() },
    { name: 'Gameplay validation', plan: { ...defaultPlan(), requirements: [
        { ...requirement('matches', 'matches'), target: 2, minRound: 25 },
        { ...requirement('populated-minutes', 'playtime'), target: 90 }, requirement('failure-budget', 'outages')
    ] } },
    { name: 'Long soak', plan: { ...defaultPlan(), timeoutHours: 72, requirements: [
        { ...requirement('healthy-minutes', 'health'), target: 360 },
        { ...requirement('player-hours', 'participation'), target: 10 }, requirement('clean-logs', 'logs')
    ] } }
];

/** Strict allow-list validation at every boundary (including stored presets). */
export function parseBetaPlan(value: unknown): BetaPlan {
    if (!value || typeof value !== 'object' || Array.isArray(value)) throw new Error('Test plan must be an object');
    const p = value as BetaPlan;
    if (p.version !== 1 || !['all', 'quorum', 'map', 'game', 'map-game'].includes(p.scope)) throw new Error('Invalid test plan version or scope');
    if (!['fail', 'pause', 'rollback'].includes(p.failureAction) || !['manual', 'when-empty'].includes(p.rollbackRestart)) throw new Error('Invalid failure policy');
    for (const [key, min, max] of [['quorum', 1, 1000], ['timeoutHours', 0.01, 8760], ['waveSize', 0, 1000]] as const) {
        if (typeof p[key] !== 'number' || !Number.isFinite(p[key]) || p[key] < min || p[key] > max) throw new Error(`Invalid ${key}`);
    }
    if (!Number.isInteger(p.quorum) || !Number.isInteger(p.waveSize)) throw new Error('Quorum and wave size must be integers');
    if (!Array.isArray(p.requirements) || !p.requirements.length || p.requirements.length > 30) throw new Error('Choose 1–30 requirements');
    const ids = new Set<string>();
    const requirements = p.requirements.map(r => {
        if (!r || typeof r !== 'object' || !requirementKinds.includes(r.kind)) throw new Error('Unknown requirement');
        if (typeof r.id !== 'string' || !/^[a-zA-Z0-9_-]{1,64}$/.test(r.id) || r.id in Object.prototype || ids.has(r.id)) throw new Error('Requirement IDs must be unique, non-reserved identifiers');
        ids.add(r.id);
        if (typeof r.label !== 'string' || !r.label.trim() || r.label.length > 200) throw new Error('Requirement needs a label (up to 200 characters)');
        for (const key of ['target', 'minRound', 'minPlayers', 'minMinutes'] as const) {
            if (typeof r[key] !== 'number' || !Number.isFinite(r[key]) || r[key] < 0 || r[key] > 1_000_000) throw new Error(`Invalid requirement ${key}`);
        }
        if (!['failure-budget', 'restart-budget', 'clean-logs'].includes(r.kind) && r.target <= 0) throw new Error('Requirement target must be positive');
        if (['round', 'matches', 'population', 'failure-budget', 'restart-budget', 'clean-logs', 'recovery', 'feature', 'manual'].includes(r.kind) && !Number.isInteger(r.target)) throw new Error('Count targets must be integers');
        if (!Number.isInteger(r.minRound) || !Number.isInteger(r.minPlayers)) throw new Error('Round and player qualifiers must be integers');
        if (r.kind === 'manual' && r.target !== 1) throw new Error('Add a separate requirement for each checklist item');
        if (typeof r.event !== 'string' || r.event.length > 120 || (r.kind === 'feature' && !/^[a-zA-Z0-9_.:-]+$/.test(r.event))) throw new Error('Feature requirements need an event name');
        return { id: r.id, kind: r.kind, label: r.label.trim(), target: r.target, minRound: r.minRound,
            minPlayers: r.minPlayers, minMinutes: r.minMinutes, event: r.event };
    });
    return { version: 1, requirements, scope: p.scope, quorum: p.quorum, timeoutHours: p.timeoutHours,
        failureAction: p.failureAction, rollbackRestart: p.rollbackRestart, waveSize: p.waveSize };
}

export interface RequirementProgress { id: string; label: string; current: number; target: number; passed: boolean; failed: boolean; detail: string }
export interface BetaTestView {
    plan: BetaPlan;
    outcome: string;
    reason: string | null;
    servers: Array<{ server: string; runId: string; phase: number; passed: boolean; progress: RequirementProgress[] }>;
    evidence: Array<{ id: number; server: string; received_at: string; kind: string; payload: string }>;
}