import { InternshipPlanAction, InternshipPlanActions } from "@/state/actions";
import { Serializable } from "@/serialization/types";
import {
    createSubmissionReducer,
    defaultDeanApprovalsState,
    defaultSubmissionState,
    MayRequireDeanApproval,
    SubmissionState
} from "@/state/reducer/submission";
import { Reducer } from "react";
import { SubmissionAction } from "@/state/actions/submission";
import { InternshipDocument, SubmissionState as ApiSubmissionState } from "@/api/dto/internship-registration";
import { Api } from "mdi-material-ui";

export type InternshipPlanState = SubmissionState & MayRequireDeanApproval & {
    document: Serializable<InternshipDocument> | null;
}

const defaultInternshipPlanState: InternshipPlanState = {
    ...defaultDeanApprovalsState,
    ...defaultSubmissionState,
    document: null,
}

const internshipPlanSubmissionReducer: Reducer<InternshipPlanState, InternshipPlanAction> = createSubmissionReducer({
    [InternshipPlanActions.Approve]: SubmissionAction.Approve,
    [InternshipPlanActions.Decline]: SubmissionAction.Decline,
    [InternshipPlanActions.Receive]: SubmissionAction.Receive,
    [InternshipPlanActions.Save]: SubmissionAction.Save,
    [InternshipPlanActions.Send]: SubmissionAction.Send,
})

const internshipPlanReducer = (state: InternshipPlanState = defaultInternshipPlanState, action: InternshipPlanAction): InternshipPlanState => {
    state = internshipPlanSubmissionReducer(state, action);

    switch (action.type) {
        case InternshipPlanActions.Save:
        case InternshipPlanActions.Send:
            return {
                ...state,
                document: action.document,
            }
        case InternshipPlanActions.Receive:
            if (state.overwritten) {
                return state;
            }

            return {
                ...state,
                accepted: action.state === ApiSubmissionState.Accepted,
                declined: action.state === ApiSubmissionState.Rejected,
                sent: [
                    ApiSubmissionState.Accepted,
                    ApiSubmissionState.Rejected,
                    ApiSubmissionState.Submitted
                ].includes(action.state),
                comment: action.comment || null,
                document: action.document,
            }

        case InternshipPlanActions.Reset:
            return defaultInternshipPlanState;

        default:
            return state;
    }
}

export default internshipPlanReducer;