// static/js/components/ChatInput.js

export const ChatInput = {
    name: 'ChatInput',
    components: {
        'dynamic-form': window.__vueApp ? DynamicForm : null
    },
    props: {
        currentMessage: {
            type: String,
            default: ''
        },
        isLoading: {
            type: Boolean,
            default: false
        },
        placeholder: {
            type: String,
            default: 'Typ je bericht hier... (Enter om te verzenden, Shift+Enter voor nieuwe regel)'
        },
        maxLength: {
            type: Number,
            default: 2000
        },
        formData: {
            type: Object,
            default: null
        },
    },
    emits: ['send-message', 'update-message', 'submit-form'],
    watch: {
        formData: {
            handler(newFormData) {
                console.log('ChatInput received formData:', newFormData);
                if (newFormData) {
                    this.formValues = {}; // Reset formulierwaarden
                    this.showForm = true;
                } else {
                    this.showForm = false;
                }
            },
            immediate: true
        },
        currentMessage(newVal) {
            this.localMessage = newVal;
        },
        localMessage(newVal) {
            this.$emit('update-message', newVal);
            this.autoResize();
        }
    },
    data() {
        return {
            localMessage: this.currentMessage,
            formValues: {},
            showForm: false
        };
    },
    computed: {
        characterCount() {
            return this.localMessage.length;
        },

        isOverLimit() {
            return this.characterCount > this.maxLength;
        },

        hasFormData() {
            return this.formData && this.formData.fields && 
                  ((Array.isArray(this.formData.fields) && this.formData.fields.length > 0) ||
                   (typeof this.formData.fields === 'object' && Object.keys(this.formData.fields).length > 0));
        },

        canSend() {
            const hasValidForm = this.showForm && this.formData && this.validateForm();
            const hasValidMessage = this.localMessage.trim() && !this.isOverLimit;

            return (!this.isLoading) && (hasValidForm || hasValidMessage);
        },

        sendButtonText() {
            return this.showForm ? 'Verstuur formulier' : 'Verstuur bericht';
        }
    },
    mounted() {
        this.autoResize();
    },
    methods: {
        handleKeydown(event) {
            if (event.key === 'Enter' && !event.shiftKey) {
                event.preventDefault();
                this.sendMessage();
            } else if (event.key === 'Escape') {
                this.localMessage = '';
            }
        },

        sendMessage() {
            if (!this.canSend) return;

            if (this.showForm && this.formData) {
                // Valideer het formulier
                if (this.validateForm()) {
                    // Verstuur het formulier
                    this.$emit('submit-form', this.formValues);
                    this.formValues = {};
                    // Reset het formulier na verzenden
                    this.showForm = false;
                }
            } else if (this.localMessage.trim()) {
                // Verstuur normaal bericht
                this.$emit('send-message');
            }
        },

        validateForm() {
            if (!this.formData || !this.formData.fields) return false;

            // Controleer of alle verplichte velden zijn ingevuld
            let missingFields = [];

            if (Array.isArray(this.formData.fields)) {
                missingFields = this.formData.fields.filter(field => {
                    if (!field.required) return false;
                    const fieldId = field.id || field.name;
                    const value = this.formValues[fieldId];
                    return value === undefined || value === null || (typeof value === 'string' && !value.trim());
                });
            } else {
                // Voor object-gebaseerde velden
                Object.entries(this.formData.fields).forEach(([fieldId, field]) => {
                    if (field.required) {
                        const value = this.formValues[fieldId];
                        if (value === undefined || value === null || (typeof value === 'string' && !value.trim())) {
                            missingFields.push(field);
                        }
                    }
                });
            }

            return missingFields.length === 0;
        },

        autoResize() {
            this.$nextTick(() => {
                const textarea = this.$refs.messageInput;
                if (textarea) {
                    textarea.style.height = 'auto';
                    textarea.style.height = Math.min(textarea.scrollHeight, 120) + 'px';
                }
            });
        },

        focusInput() {
            this.$refs.messageInput?.focus();
        },

        clearInput() {
            this.localMessage = '';
            this.focusInput();
        },

        toggleForm() {
            this.showForm = !this.showForm;
            if (!this.showForm) {
                this.focusInput();
            }
        },

        submitForm() {
            if (this.canSubmitForm) {
                this.$emit('submit-form', { ...this.formValues });
                this.showForm = false;
                this.focusInput();
            }
        },

        cancelForm() {
            this.showForm = false;
            this.focusInput();
        },

        updateFormValues(newValues) {
            this.formValues = { ...newValues };
        }
    },
    template: `
        <div class="chat-input-container">
            <div v-if="formData && showForm" class="dynamic-form-container">
                <dynamic-form
                    :form-data="formData"
                    :form-values="formValues"
                    :is-submitting="isLoading"
                    :hide-actions="true"
                    @update:form-values="updateFormValues"
                ></dynamic-form>
            </div>

            <div class="chat-input">
                <!-- Main input area -->
                <div class="input-main">
                    <textarea 
                        ref="messageInput"
                        v-model="localMessage"
                        @keydown="handleKeydown"
                        :placeholder="placeholder"
                        rows="1"
                        :disabled="isLoading"
                        :maxlength="maxLength"
                        class="message-input"
                        :class="{ 'over-limit': isOverLimit }"
                    ></textarea>

                    <!-- Character counter -->
                    <div v-if="maxLength" class="character-counter" :class="{ 'over-limit': isOverLimit }">
                        {{ characterCount }}/{{ maxLength }}
                    </div>
                </div>

                <!-- Input actions -->
                <div class="input-actions">
                    <!-- Formulier toggle knop -->
                    <button 
                        v-if="hasFormData"
                        @click="toggleForm"
                        class="form-toggle-btn"
                        :disabled="isLoading"
                        :class="{ 'active': showForm }"
                        :title="showForm ? 'Verberg formulier' : 'Toon formulier'"
                    >
                        <i class="material-icons">description</i>
                    </button>

                    <!-- Send button -->
                    <button 
                        @click="sendMessage"
                        class="send-btn"
                        :class="{ 'form-mode': showForm && formData }"
                        :disabled="!canSend"
                        :title="showForm ? 'Verstuur formulier' : 'Verstuur bericht'"
                    >
                        <span v-if="isLoading" class="loading-spinner">⏳</span>
                        <svg v-else width="20" height="20" viewBox="0 0 24 24" fill="currentColor">
                            <path d="M2.01 21L23 12 2.01 3 2 10l15 2-15 2z"/>
                        </svg>
                    </button>
                </div>
            </div>
        </div>
    `
};