"use client";

import IncrementerBlock from "../../../components/controls/IncrementerBlock";
import { useMessages } from "../../../contexts/MessagesContext";
import { formatConflictApplicableScopeForTextarea } from "../../../../lib/create/ruleSectionsFromMethodSelections";
import { withDecisionApproachKeyResourceScopes } from "../../../../lib/create/decisionApproachKeyResources";
import type {
  CommunicationMethodDetailEntry,
  ConflictManagementDetailEntry,
  DecisionApproachDetailEntry,
  MembershipMethodDetailEntry,
} from "../types";
import ApplicableScopeField from "./ApplicableScopeField";
import type { MethodCardPolicyStep } from "./MethodCardPolicyDialog";
import ModalTextAreaField from "./ModalTextAreaField";

const CONSENSUS_LEVEL_MIN = 0;
const CONSENSUS_LEVEL_MAX = 100;
const CONSENSUS_LEVEL_STEP = 5;

function textStep(args: {
  id: string;
  title: string;
  emptyDescription: string;
  value: string;
  onChange: (next: string) => void;
  generateDraftText?: string;
  generateDraftLabel: string;
  generateDraftHint: string;
  filledHint: string;
  placeholder: string;
}): MethodCardPolicyStep {
  const done = args.value.trim().length > 0;
  return {
    id: args.id,
    title: args.title,
    emptyDescription: args.emptyDescription,
    done,
    summary: args.value,
    renderEditor: () => (
      <ModalTextAreaField
        hideLabel
        label={args.title}
        value={args.value}
        onChange={args.onChange}
        placeholder={args.placeholder}
        generateDraftText={args.generateDraftText}
        generateDraftLabel={args.generateDraftLabel}
        generateDraftHint={args.generateDraftHint}
        filledHint={args.filledHint}
        autoFocus
      />
    ),
  };
}

function usePolicyFieldCopy() {
  const m = useMessages();
  return {
    dialog: m.create.customRule.cardDialog,
    draftField: m.create.draftField,
  };
}

export function useCommunicationPolicySteps(
  value: CommunicationMethodDetailEntry,
  onChange: (next: CommunicationMethodDetailEntry) => void,
  generateDraft?: CommunicationMethodDetailEntry,
): MethodCardPolicyStep[] {
  const { dialog, draftField } = usePolicyFieldCopy();
  const headings = useMessages().create.customRule.communication.sectionHeadings;
  const fields: Array<keyof CommunicationMethodDetailEntry> = [
    "corePrinciple",
    "logisticsAdmin",
    "codeOfConduct",
  ];
  return fields.map((field) =>
    textStep({
      id: field,
      title: headings[field],
      emptyDescription: dialog.emptyStepDescription,
      value: value[field],
      onChange: (next) => onChange({ ...value, [field]: next }),
      generateDraftText: generateDraft?.[field],
      generateDraftLabel: draftField.generateDraft,
      generateDraftHint: draftField.generateDraftHint,
      filledHint: dialog.filledHint,
      placeholder: draftField.placeholder,
    }),
  );
}

export function useMembershipPolicySteps(
  value: MembershipMethodDetailEntry,
  onChange: (next: MembershipMethodDetailEntry) => void,
  generateDraft?: MembershipMethodDetailEntry,
): MethodCardPolicyStep[] {
  const { dialog, draftField } = usePolicyFieldCopy();
  const headings = useMessages().create.customRule.membership.sectionHeadings;
  const fields: Array<keyof MembershipMethodDetailEntry> = [
    "eligibility",
    "joiningProcess",
    "expectations",
  ];
  return fields.map((field) =>
    textStep({
      id: field,
      title: headings[field],
      emptyDescription: dialog.emptyStepDescription,
      value: value[field],
      onChange: (next) => onChange({ ...value, [field]: next }),
      generateDraftText: generateDraft?.[field],
      generateDraftLabel: draftField.generateDraft,
      generateDraftHint: draftField.generateDraftHint,
      filledHint: dialog.filledHint,
      placeholder: draftField.placeholder,
    }),
  );
}

export function useConflictPolicySteps(
  value: ConflictManagementDetailEntry,
  onChange: (next: ConflictManagementDetailEntry) => void,
  generateDraft?: ConflictManagementDetailEntry,
): MethodCardPolicyStep[] {
  const { dialog, draftField } = usePolicyFieldCopy();
  const t = useMessages().create.customRule.conflictManagement;
  const scopeText = formatConflictApplicableScopeForTextarea(
    value.selectedApplicableScope,
    value.applicableScope,
  );
  const generateScope =
    generateDraft && generateDraft.applicableScope.length > 0
      ? generateDraft.applicableScope.join("\n")
      : generateDraft
        ? formatConflictApplicableScopeForTextarea(
            generateDraft.selectedApplicableScope,
            generateDraft.applicableScope,
          )
        : undefined;

  return [
    textStep({
      id: "corePrinciple",
      title: t.sectionHeadings.corePrinciple,
      emptyDescription: dialog.emptyStepDescription,
      value: value.corePrinciple,
      onChange: (next) => onChange({ ...value, corePrinciple: next }),
      generateDraftText: generateDraft?.corePrinciple,
      generateDraftLabel: draftField.generateDraft,
      generateDraftHint: draftField.generateDraftHint,
      filledHint: dialog.filledHint,
      placeholder: draftField.placeholder,
    }),
    textStep({
      id: "applicableScope",
      title: t.sectionHeadings.applicableScope,
      emptyDescription: t.applicableScopePlaceholder,
      value: scopeText,
      onChange: (next) => {
        const lines = next
          .split("\n")
          .map((line) => line.trim())
          .filter((line) => line.length > 0);
        onChange({
          ...value,
          applicableScope: lines,
          selectedApplicableScope: [...lines],
        });
      },
      generateDraftText: generateScope,
      generateDraftLabel: draftField.generateDraft,
      generateDraftHint: draftField.generateDraftHint,
      filledHint: dialog.filledHint,
      placeholder: t.applicableScopePlaceholder,
    }),
    textStep({
      id: "processProtocol",
      title: t.sectionHeadings.processProtocol,
      emptyDescription: dialog.emptyStepDescription,
      value: value.processProtocol,
      onChange: (next) => onChange({ ...value, processProtocol: next }),
      generateDraftText: generateDraft?.processProtocol,
      generateDraftLabel: draftField.generateDraft,
      generateDraftHint: draftField.generateDraftHint,
      filledHint: dialog.filledHint,
      placeholder: draftField.placeholder,
    }),
    textStep({
      id: "restorationFallbacks",
      title: t.sectionHeadings.restorationFallbacks,
      emptyDescription: dialog.emptyStepDescription,
      value: value.restorationFallbacks,
      onChange: (next) => onChange({ ...value, restorationFallbacks: next }),
      generateDraftText: generateDraft?.restorationFallbacks,
      generateDraftLabel: draftField.generateDraft,
      generateDraftHint: draftField.generateDraftHint,
      filledHint: dialog.filledHint,
      placeholder: draftField.placeholder,
    }),
  ];
}

export function useDecisionApproachPolicySteps(
  value: DecisionApproachDetailEntry,
  onChange: (next: DecisionApproachDetailEntry) => void,
  generateDraft?: DecisionApproachDetailEntry,
): MethodCardPolicyStep[] {
  const { dialog, draftField } = usePolicyFieldCopy();
  const t = useMessages().create.customRule.decisionApproaches;
  const scopes = withDecisionApproachKeyResourceScopes(value.applicableScope);
  const selectedSummary = value.selectedApplicableScope.join(", ");

  const consensusStep: MethodCardPolicyStep = {
    id: "consensusLevel",
    title: t.sectionHeadings.consensusLevel,
    emptyDescription: t.consensusLevelDisplay.supermajorityShare,
    done: true,
    summary:
      value.consensusLevel === undefined
        ? t.consensusLevelDisplay.supermajorityShare
        : value.consensusLevel === 0
          ? t.consensusLevelDisplay.noSetShare
          : `${value.consensusLevel}%`,
    renderEditor: () =>
      value.consensusLevel === undefined ? (
        <ModalTextAreaField
          hideLabel
          label={t.sectionHeadings.consensusLevel}
          value={t.consensusLevelDisplay.supermajorityShare}
          onChange={() => {}}
          disabled
          rows={1}
        />
      ) : (
        <IncrementerBlock
          label={t.sectionHeadings.consensusLevel}
          helpIcon={false}
          value={value.consensusLevel}
          min={CONSENSUS_LEVEL_MIN}
          max={CONSENSUS_LEVEL_MAX}
          step={CONSENSUS_LEVEL_STEP}
          onChange={(next) => onChange({ ...value, consensusLevel: next })}
          formatValue={(v) =>
            v === 0 ? t.consensusLevelDisplay.noSetShare : `${v}%`
          }
          decrementAriaLabel={dialog.decreaseConsensusLevel}
          incrementAriaLabel={dialog.increaseConsensusLevel}
        />
      ),
  };

  const scopeStep: MethodCardPolicyStep = {
    id: "applicableScope",
    title: t.sectionHeadings.applicableScope,
    emptyDescription: dialog.scopeEmptyDescription,
    done: value.selectedApplicableScope.length > 0,
    summary: selectedSummary,
    renderEditor: () => (
      <ApplicableScopeField
        label={t.sectionHeadings.applicableScope}
        addLabel={t.scopeAddButtonLabel}
        scopes={scopes}
        selectedScopes={value.selectedApplicableScope}
        onToggleScope={(scope) =>
          onChange({
            ...value,
            selectedApplicableScope: value.selectedApplicableScope.includes(
              scope,
            )
              ? value.selectedApplicableScope.filter((item) => item !== scope)
              : [...value.selectedApplicableScope, scope],
          })
        }
        onAddScope={(scope) =>
          onChange({
            ...value,
            applicableScope: [...value.applicableScope, scope],
          })
        }
      />
    ),
  };

  return [
    textStep({
      id: "corePrinciple",
      title: t.sectionHeadings.corePrinciple,
      emptyDescription: dialog.emptyStepDescription,
      value: value.corePrinciple,
      onChange: (next) => onChange({ ...value, corePrinciple: next }),
      generateDraftText: generateDraft?.corePrinciple,
      generateDraftLabel: draftField.generateDraft,
      generateDraftHint: draftField.generateDraftHint,
      filledHint: dialog.filledHint,
      placeholder: draftField.placeholder,
    }),
    scopeStep,
    textStep({
      id: "stepByStepInstructions",
      title: t.sectionHeadings.stepByStepInstructions,
      emptyDescription: dialog.emptyStepDescription,
      value: value.stepByStepInstructions,
      onChange: (next) => onChange({ ...value, stepByStepInstructions: next }),
      generateDraftText: generateDraft?.stepByStepInstructions,
      generateDraftLabel: draftField.generateDraft,
      generateDraftHint: draftField.generateDraftHint,
      filledHint: dialog.filledHint,
      placeholder: draftField.placeholder,
    }),
    consensusStep,
    textStep({
      id: "objectionsDeadlocks",
      title: t.sectionHeadings.objectionsDeadlocks,
      emptyDescription: dialog.emptyStepDescription,
      value: value.objectionsDeadlocks,
      onChange: (next) => onChange({ ...value, objectionsDeadlocks: next }),
      generateDraftText: generateDraft?.objectionsDeadlocks,
      generateDraftLabel: draftField.generateDraft,
      generateDraftHint: draftField.generateDraftHint,
      filledHint: dialog.filledHint,
      placeholder: draftField.placeholder,
    }),
  ];
}