import { createSlice, PayloadAction, createAsyncThunk } from '@reduxjs/toolkit';
import { toast } from 'react-toastify';
import colors from '../../utlity/colorsArr';
import api from '../../config/api';

export enum recipientType {
    SIGNER = "Signer",
    INPERSONSIGNER = "InPersonSigner",
    CC = "CC"
}

export interface Recipient {
    id?: string | null;
    firstName: string;
    lastName: string;
    routingOrder: number;
    email: string;
    hostName: string;
    hostEmail: string;
    type: recipientType;
    color?: string;
    allowSenderToEdit: boolean;
    allowSenderToDelete: boolean;
    roleName: string
    provideOwnTags?: boolean;
    uuid?: string;
    newOne?: boolean;
    completed?: boolean; 
}

export interface SelectedRecipientInt {
    recipients: Recipient[],
    signingOrder: boolean,
    transactionTemplateToggle: TRANSACTION_TEMPLATE_TOGGLE
}

interface AddRecipientArgs {
    recipientsData: Recipient[];
    accountId: string;
    transactionId: string;
    transactionTemplateToggle: TRANSACTION_TEMPLATE_TOGGLE;
}

interface RemoveRecipientAsyncInterface {
    recipientId: number | null;
    accountId: string;
    transactionId: string;
    email: string;
    transactionTemplateToggle: TRANSACTION_TEMPLATE_TOGGLE;
}

export enum TRANSACTION_TEMPLATE_TOGGLE {
    TRANSACTIONS = "transactions",
    TEMPLATES = "templates"
}

const initialState: SelectedRecipientInt = {
    recipients: [],
    signingOrder: false,
    transactionTemplateToggle: TRANSACTION_TEMPLATE_TOGGLE.TRANSACTIONS
};

// 1. Add Recipient Async
export const addRecipientAsync = createAsyncThunk<
    Recipient[],
    { recipientsData: Recipient[]; accountId: string; transactionId: string }
>(
    'selectedRecipients/addRecipientAsync',
    async ({ recipientsData, accountId, transactionId }, { rejectWithValue, getState }) => {
        try {
            const state = getState() as { selectedRecipients: SelectedRecipientInt };
            const toggle = state.selectedRecipients.transactionTemplateToggle;

            const updateRecipientsData = recipientsData.filter(recipient => recipient.id != null);
            const createRecipientsData = recipientsData.filter(recipient => recipient.id == null);

            const basePath = `/api/v1/accounts/${accountId}/${toggle}/${transactionId}/recipients`;

            const resUpdate = updateRecipientsData.length
                ? await api.put(basePath, updateRecipientsData)
                : { data: [] };

            const resCreate = createRecipientsData.length
                ? await api.post(basePath, createRecipientsData)
                : { data: [] };

            return [...resCreate.data, ...resUpdate.data] as Recipient[];
        } catch (err: any) {
            return rejectWithValue(err.response?.data || "Failed to add recipient");
        }
    }
);

// 2. Remove Recipient Async
export const removeRecipientAsync = createAsyncThunk<
    string | number,
    { recipientId: number | null; accountId: string; transactionId: string; email: string }
>(
    'selectedRecipients/removeRecipientAsync',
    async ({ recipientId, accountId, transactionId, email }, { rejectWithValue, getState }) => {
        try {
            const state = getState() as { selectedRecipients: SelectedRecipientInt };
            const toggle = state.selectedRecipients.transactionTemplateToggle;

            const basePath = `/api/v1/accounts/${accountId}/${toggle}/${transactionId}/recipients`;

            // return
            if (recipientId) {
                await api.delete(`${basePath}/${recipientId}`);
                return recipientId;
            }

            return email;
        } catch (err: any) {
            return rejectWithValue("Failed to remove recipient");
        }
    }
);

// 3. Fetch Recipients Async
export const fetchRecipients = createAsyncThunk<
    Recipient[],
    { accountId: string; transactionId: string }
>(
    'selectedRecipients/fetchRecipients',
    async ({ accountId, transactionId }, { rejectWithValue, getState }) => {
        try {
            const state = getState() as { selectedRecipients: SelectedRecipientInt };
            const toggle = state.selectedRecipients.transactionTemplateToggle;

            const basePath = `/api/v1/accounts/${accountId}/${toggle}/${transactionId}/recipients`;
            const response = await api.get(basePath);

            let data = response.data as Recipient[];

            // data = data.filter((recipient, indx) => {
            //     return recipient.type != "CC";
            // })

            // if (data.length == 0 && window.location.pathname.includes('/review-and-tag')) {
            //     window.location.href = window.location.href.replace("review-and-tag", "setup-transaction") // ✅ navigate using window
            // }

            return data as Recipient[];
        } catch (err: any) {
            return rejectWithValue(err.response?.data || "Failed to fetch recipients");
        }
    }
);

const selectedRecipientsSlice = createSlice({
    name: 'selectedRecipients',
    initialState,
    reducers: {
        addRecipient: (state, action: PayloadAction<Recipient>) => {
            if (action.payload.type == recipientType.INPERSONSIGNER) {
                state.signingOrder = true;
                state.recipients = [action.payload, ...state.recipients];
            } else {
                state.recipients.push(action.payload);
            }
        },
        resetRecipients: (state) => {
            state.recipients = [];
        },
        toggleToTemplates: (state) => {
            state.transactionTemplateToggle = TRANSACTION_TEMPLATE_TOGGLE.TEMPLATES;
        },
        setSelectedRecipients: (state, action: PayloadAction<Recipient[]>) => {
            for (const [index, recipient] of action.payload.entries()) {
                if ((recipient.type == recipientType.INPERSONSIGNER && index > 0)
                    && action.payload[index - 1].type != recipientType.INPERSONSIGNER) {
                    return state;
                }
            }

            state.recipients = action.payload;
        },
        setSigningOrder: (state, action: PayloadAction<boolean>) => {
            for (const recipient of state.recipients) {
                if (recipient.type == recipientType.INPERSONSIGNER) {
                    if (state.signingOrder) return state;
                    state.signingOrder = true;
                    return state;
                }
            }

            state.signingOrder = action.payload;
        },
        removeSelectedRecipient: (state, action: PayloadAction<Recipient>) => {
            state.recipients = state.recipients.filter((recipient) => recipient.uuid != action.payload.uuid);
        },
        removeAllRecipients: (state) => {
            state.recipients = [];
        },
        addColorsToRecipient: (state) => {
            for (const [index, recipient] of state.recipients.entries()) {
                recipient.color = colors[index];
            }
            return state;
        },
        updateRecipientOrder: (state, action: PayloadAction<{ id: string; routingOrder: number }>) => {
            const { id, routingOrder } = action.payload;
            const recipient = state.recipients.find((r) => r.id == id || r.uuid == id);
            if (recipient) {
                recipient.routingOrder = routingOrder;
            }
        },
        reorderAllRecipientAscOrder: (state) => {
            state.recipients = state.recipients.sort((a, b) => a.routingOrder - b.routingOrder);
        },
        updateRecipientByIndxAndRo: (state, action: PayloadAction<{ indx1: number; ro1: number, indx2: number; ro2: number }>) => {
            const indx1 = action.payload.indx1
            const indx2 = action.payload.indx2
            const ro1 = action.payload.ro1
            const ro2 = action.payload.ro2

            const temp = { ...state.recipients[indx1], routingOrder: ro1 };
            state.recipients[indx1] = { ...state.recipients[indx2], routingOrder: ro2 };
            state.recipients[indx2] = temp;
        },
        updateRecipientIds: (state, action: PayloadAction<Recipient[]>) => {
            for (const recObj of state.recipients) {
                for (const recObj2 of action.payload) {
                    recObj.id = recObj2.id;
                }
            }
        },
        updateRecipient(state, action: PayloadAction<Recipient>) {
            const payloadUuid = String(action.payload.uuid);

            // First try matching by id
            let index = state.recipients.findIndex(
                r => String(r.id) == payloadUuid
            );

            // If not found, try matching by uuid
            if (index == -1) {
                index = state.recipients.findIndex(
                    r => String(r.uuid) == payloadUuid
                );
            }

            if (index != -1) {
                // Merge existing recipient with new values
                state.recipients[index] = {
                    ...state.recipients[index],
                    ...action.payload
                };
            } else {
                console.warn('Recipient not found with uuid:', payloadUuid);
            }
        }


        ,

        resetSelRecipient: () => initialState
    },
    extraReducers: (builder) => {
        builder
            .addCase(fetchRecipients.pending, () => { })
            .addCase(fetchRecipients.fulfilled, (state, action: PayloadAction<Recipient[]>) => {
                const assignedRecipients = action.payload.map((recipient, index) => ({
                    ...recipient,
                    color: colors[index],
                }));
                state.recipients = assignedRecipients;
            })
            .addCase(fetchRecipients.rejected, (state, action) => {
                console.error("Failed to fetch recipients:", action.payload);
                // toast.error("Failed to fetch recipients", {
                //     position: "bottom-right",
                //     autoClose: 5000,
                //     theme: "light",
                // });
            })
            .addCase(addRecipientAsync.pending, () => { })
            .addCase(addRecipientAsync.fulfilled, (state, action: PayloadAction<Recipient[]>) => {
                state.recipients = action.payload.map((recipient, index) => ({
                    ...recipient,
                    color: colors[index % colors.length],
                }));
            })
            .addCase(addRecipientAsync.rejected, (state, action) => {
                console.error("Failed to add recipients:", action.payload);
                // toast.error("Failed to add recipients", {
                //     position: "bottom-right",
                //     autoClose: 5000,
                //     theme: "light",
                // });
            })
            .addCase(removeRecipientAsync.pending, () => { })
            .addCase(removeRecipientAsync.fulfilled, (state, action: PayloadAction<string | number>) => {
                state.recipients = state.recipients.filter(
                    (recipient) => recipient.id != action.payload && recipient.email != action.payload
                );
            })
            .addCase(removeRecipientAsync.rejected, (state, action) => {
                console.error("Failed to delete recipient:", action.payload);
                // toast.error("Failed to delete recipient", {
                //     position: "bottom-right",
                //     autoClose: 5000,
                //     theme: "light",
                // });
            });
    }
});

export const {
    addRecipient,
    setSelectedRecipients,
    toggleToTemplates,
    removeSelectedRecipient,
    removeAllRecipients,
    setSigningOrder,
    addColorsToRecipient,
    updateRecipientIds,
    resetSelRecipient,
    updateRecipientOrder,
    updateRecipient,
    resetRecipients,
    reorderAllRecipientAscOrder,
    updateRecipientByIndxAndRo
} = selectedRecipientsSlice.actions;

export default selectedRecipientsSlice.reducer;