(() => {
    'use strict';

    const PTA = window.PTA;
    if (!PTA) throw new Error('PTA core doit être chargé avant administration.js');

    const { structureSelect } = PTA.elements;
    const {
        escapeHtml,
        readJsonResponse,
        apiErrorMessage,
        formatDuration,
    } = PTA.utils;

    const typeLabel = (type) => type === 'EXTRASCOLAIRE' ? 'Extrascolaire' : 'Périscolaire';

    async function saveAgentStructure(button) {
        const row = button.closest('tr[data-agent-id]');
        const select = row?.querySelector('.agent-structure-select');
        const message = document.querySelector('#assignment-message');
        if (!row || !select || !message) return;

        button.disabled = true;
        message.className = 'message';
        message.textContent = '';

        try {
            const response = await fetch('api/agent_assignments.php', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({
                    csrf_token: window.PTA_CONFIG.csrfToken,
                    agent_id: Number(row.dataset.agentId),
                    structure_id: select.value ? Number(select.value) : null,
                }),
            });
            const data = await readJsonResponse(response);
            if (!response.ok) throw new Error(apiErrorMessage(data, 'Impossible de modifier le lieu principal de l’agent.'));

            message.className = 'message message-success';
            message.textContent = data.message;

            if (structureSelect?.value) await PTA.modules.planning?.loadAgents?.();
            if (document.querySelector('#overview-structure')?.value) await PTA.modules.structureOverview?.load?.();
            if (document.querySelector('#overview-agent')?.value) await PTA.modules.agentOverview?.load?.();
        } catch (error) {
            message.className = 'message message-error';
            message.textContent = error.message;
        } finally {
            button.disabled = false;
        }
    }

    async function saveStructureType(button) {
        const row = button.closest('tr[data-structure-id]');
        const select = row?.querySelector('.structure-type-select');
        const message = document.querySelector('#structure-settings-message');
        if (!row || !select || !message) return;

        button.disabled = true;
        message.className = 'message';
        message.textContent = '';

        try {
            const response = await fetch('api/update_structure.php', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({
                    csrf_token: window.PTA_CONFIG.csrfToken,
                    structure_id: Number(row.dataset.structureId),
                    type_affectation: select.value,
                }),
            });
            const data = await readJsonResponse(response);
            if (!response.ok) throw new Error(apiErrorMessage(data, 'Impossible de modifier le type du lieu.'));

            updateStructureLabels(Number(row.dataset.structureId), select.value);
            message.className = 'message message-success';
            message.textContent = data.message;

            if (structureSelect?.value) await PTA.modules.planning?.loadAgents?.();
            if (document.querySelector('#overview-structure')?.value === String(row.dataset.structureId)) {
                await PTA.modules.structureOverview?.load?.();
            }
            if (document.querySelector('#overview-agent')?.value) await PTA.modules.agentOverview?.load?.();
        } catch (error) {
            message.className = 'message message-error';
            message.textContent = error.message;
        } finally {
            button.disabled = false;
        }
    }

    function addOptionIfMissing(select, value, label, selected = false) {
        if (!select) return;
        let option = Array.from(select.options).find((item) => item.value === String(value));
        if (!option) {
            option = document.createElement('option');
            option.value = String(value);
            select.appendChild(option);
        }
        option.textContent = label;
        if (selected) option.selected = true;
    }

    function structureOptionLabel(structure) {
        return `${structure.nom} — ${typeLabel(structure.type_affectation)}`;
    }

    function addStructureEverywhere(structure) {
        const id = Number(structure.id_structure);
        const label = structureOptionLabel(structure);

        [
            document.querySelector('#structure'),
            document.querySelector('#overview-structure'),
            document.querySelector('#new-agent-structure'),
            document.querySelector('#edit-agent-entry-structure'),
            document.querySelector('#edit-agent-profile-structure'),
            document.querySelector('#coverage-structure-filter'),
            document.querySelector('#coverage-rules-structure'),
        ].forEach((select) => addOptionIfMissing(select, id, label));

        document.querySelectorAll('.agent-structure-select').forEach((select) => {
            addOptionIfMissing(select, id, label);
        });
    }

    function updateStructureLabels(structureId, type) {
        const source = document.querySelector(`#structure-settings-body tr[data-structure-id="${Number(structureId)}"]`);
        const structureName = source?.querySelector('td strong')?.textContent?.trim();
        if (!structureName) return;
        const label = `${structureName} — ${typeLabel(type)}`;

        document.querySelectorAll('select').forEach((select) => {
            const option = Array.from(select.options).find((item) => item.value === String(structureId));
            if (option && (
                select.matches('#structure, #overview-structure, #new-agent-structure, #edit-agent-entry-structure, #edit-agent-profile-structure, #coverage-structure-filter, #coverage-rules-structure, .agent-structure-select')
            )) {
                option.textContent = label;
            }
        });
    }

    function structureOptionsHtml(selectedStructureId = null) {
        const source = document.querySelector('#new-agent-structure');
        if (!source) return '<option value="">Sans lieu principal</option>';

        const options = ['<option value="">Sans lieu principal</option>'];
        Array.from(source.options).forEach((option) => {
            if (!option.value) return;
            const selected = Number(option.value) === Number(selectedStructureId) ? ' selected' : '';
            options.push(`<option value="${Number(option.value)}"${selected}>${escapeHtml(option.textContent.trim())}</option>`);
        });
        return options.join('');
    }

    function addStructureSettingsRow(structure) {
        const body = document.querySelector('#structure-settings-body');
        if (!body || body.querySelector(`tr[data-structure-id="${Number(structure.id_structure)}"]`)) return;

        const row = document.createElement('tr');
        row.dataset.structureId = String(Number(structure.id_structure));
        row.innerHTML = `
            <td><strong>${escapeHtml(structure.nom)}</strong></td>
            <td>${escapeHtml(structure.code)}</td>
            <td>
                <select class="structure-type-select" aria-label="Type d’affectation de ${escapeHtml(structure.nom)}">
                    <option value="PERISCOLAIRE" ${structure.type_affectation === 'PERISCOLAIRE' ? 'selected' : ''}>Périscolaire</option>
                    <option value="EXTRASCOLAIRE" ${structure.type_affectation === 'EXTRASCOLAIRE' ? 'selected' : ''}>Extrascolaire</option>
                </select>
            </td>
            <td><button type="button" class="button button-secondary save-structure-type">Enregistrer</button></td>
        `;
        body.appendChild(row);
    }

    function qualificationLabel(agent) {
        if (!Number(agent.est_diplome)) return 'Non diplômé';
        return agent.diplome_libelle ? `Diplômé — ${agent.diplome_libelle}` : 'Diplômé';
    }

    function formatContractDate(value) {
        if (!value) return 'Non renseignée';
        const [year, month, day] = String(value).split('-');
        return year && month && day ? `${day}/${month}/${year}` : value;
    }

    function agentRowHtml(agent) {
        const structureLabel = agent.structure_nom || agent.structure_principale_nom || 'Sans lieu principal';
        return `
            <td><strong class="agent-row-name">${escapeHtml(agent.prenom)} ${escapeHtml(agent.nom)}</strong></td>
            <td>${escapeHtml(agent.matricule)}</td>
            <td class="agent-row-post">${escapeHtml(agent.poste_libelle || 'Non renseigné')}</td>
            <td class="agent-row-qualification">${escapeHtml(qualificationLabel(agent))}</td>
            <td class="agent-row-phone">${escapeHtml(agent.telephone || 'Non renseigné')}</td>
            <td class="agent-row-contract-start">${escapeHtml(formatContractDate(agent.date_debut_contrat))}</td>
            <td class="agent-row-structure">${escapeHtml(structureLabel)}</td>
            <td><button type="button" class="button button-secondary edit-agent-profile">Modifier</button></td>
        `;
    }

    function setAgentRowData(row, agent) {
        row.dataset.agentId = String(Number(agent.id_agent));
        row.dataset.email = agent.email || '';
        row.dataset.telephone = agent.telephone || '';
        row.dataset.adresse = agent.adresse || '';
        row.dataset.estDiplome = Number(agent.est_diplome) ? '1' : '0';
        row.dataset.diplomeLibelle = agent.diplome_libelle || '';
        row.dataset.dateDebutContrat = agent.date_debut_contrat || '';
        row.dataset.dateFinContrat = agent.date_fin_contrat || '';
        row.dataset.idPoste = agent.id_poste ? String(Number(agent.id_poste)) : '';
        row.dataset.typeContrat = agent.type_contrat || 'PERMANENT';
        row.dataset.formationRepartitionAnnuelle = Number(agent.formation_repartition_annuelle) ? '1' : '0';
        row.dataset.commentairePta = agent.commentaire_pta || '';
        row.dataset.structureId = agent.id_structure ? String(Number(agent.id_structure)) : '';
    }

    function addAgentEverywhere(agent) {
        const overviewAgent = document.querySelector('#overview-agent');
        addOptionIfMissing(
            overviewAgent,
            Number(agent.id_agent),
            `${agent.prenom} ${agent.nom} (${agent.matricule})`
        );

        const body = document.querySelector('#agent-assignment-body');
        if (body && !body.querySelector(`tr[data-agent-id="${Number(agent.id_agent)}"]`)) {
            const row = document.createElement('tr');
            setAgentRowData(row, agent);
            row.innerHTML = agentRowHtml(agent);
            body.appendChild(row);
        }
    }

    function toggleDiplomaField(select, input) {
        if (!select || !input) return;
        const qualified = select.value === '1';
        input.disabled = !qualified;
        if (!qualified) input.value = '';
    }

    function openAgentProfileModal(row) {
        const modal = document.querySelector('#agent-profile-modal');
        if (!modal || !row) return;

        document.querySelector('#edit-agent-profile-id').value = row.dataset.agentId || '';
        document.querySelector('#agent-profile-modal-subtitle').textContent = row.querySelector('.agent-row-name')?.textContent?.trim() || '';
        document.querySelector('#edit-agent-profile-email').value = row.dataset.email || '';
        document.querySelector('#edit-agent-profile-phone').value = row.dataset.telephone || '';
        document.querySelector('#edit-agent-profile-address').value = row.dataset.adresse || '';
        document.querySelector('#edit-agent-profile-qualified').value = row.dataset.estDiplome === '1' ? '1' : '0';
        document.querySelector('#edit-agent-profile-diploma').value = row.dataset.diplomeLibelle || '';
        document.querySelector('#edit-agent-profile-contract-start').value = row.dataset.dateDebutContrat || '';
        document.querySelector('#edit-agent-profile-contract-end').value = row.dataset.dateFinContrat || '';
        document.querySelector('#edit-agent-profile-post').value = row.dataset.idPoste || '';
        document.querySelector('#edit-agent-profile-contract-type').value = row.dataset.typeContrat || 'PERMANENT';
        document.querySelector('#edit-agent-profile-training-planned').checked = row.dataset.formationRepartitionAnnuelle === '1';
        document.querySelector('#edit-agent-profile-pta-comment').value = row.dataset.commentairePta || '';
        document.querySelector('#edit-agent-profile-structure').value = row.dataset.structureId || '';
        toggleDiplomaField(document.querySelector('#edit-agent-profile-qualified'), document.querySelector('#edit-agent-profile-diploma'));

        const message = document.querySelector('#agent-profile-message');
        if (message) {
            message.className = 'message';
            message.textContent = '';
        }
        modal.hidden = false;
    }

    function closeAgentProfileModal() {
        const modal = document.querySelector('#agent-profile-modal');
        if (modal) modal.hidden = true;
    }

    async function saveAgentProfile(event) {
        event.preventDefault();
        const form = event.currentTarget;
        const message = document.querySelector('#agent-profile-message');
        const submit = form.querySelector('button[type="submit"]');
        const agentId = Number(document.querySelector('#edit-agent-profile-id').value);
        if (!agentId || !message || !submit) return;

        submit.disabled = true;
        message.className = 'message';
        message.textContent = '';

        try {
            const structureValue = document.querySelector('#edit-agent-profile-structure').value;
            const response = await fetch('api/update_agent.php', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({
                    csrf_token: window.PTA_CONFIG.csrfToken,
                    agent_id: agentId,
                    email: document.querySelector('#edit-agent-profile-email').value,
                    telephone: document.querySelector('#edit-agent-profile-phone').value,
                    adresse: document.querySelector('#edit-agent-profile-address').value,
                    est_diplome: document.querySelector('#edit-agent-profile-qualified').value === '1',
                    diplome_libelle: document.querySelector('#edit-agent-profile-diploma').value,
                    date_debut_contrat: document.querySelector('#edit-agent-profile-contract-start').value,
                    date_fin_contrat: document.querySelector('#edit-agent-profile-contract-end').value,
                    id_poste: Number(document.querySelector('#edit-agent-profile-post').value),
                    type_contrat: document.querySelector('#edit-agent-profile-contract-type').value,
                    formation_repartition_annuelle: document.querySelector('#edit-agent-profile-training-planned').checked,
                    commentaire_pta: document.querySelector('#edit-agent-profile-pta-comment').value,
                    structure_id: structureValue ? Number(structureValue) : null,
                }),
            });
            const data = await readJsonResponse(response);
            if (!response.ok) throw new Error(apiErrorMessage(data, 'Impossible de modifier les informations de l’agent.'));

            const row = document.querySelector(`#agent-assignment-body tr[data-agent-id="${agentId}"]`);
            if (row) {
                setAgentRowData(row, data.agent);
                row.innerHTML = agentRowHtml({
                    ...data.agent,
                    structure_nom: data.agent.structure_principale_nom,
                });
            }

            message.className = 'message message-success';
            message.textContent = data.message;

            if (structureSelect?.value) await PTA.modules.planning?.loadAgents?.();
            if (document.querySelector('#overview-structure')?.value) await PTA.modules.structureOverview?.load?.();
            if (document.querySelector('#overview-agent')?.value === String(agentId)) await PTA.modules.agentOverview?.load?.();

            setTimeout(closeAgentProfileModal, 500);
        } catch (error) {
            message.className = 'message message-error';
            message.textContent = error.message;
        } finally {
            submit.disabled = false;
        }
    }

    async function createStructure(event) {
        event.preventDefault();
        const form = event.currentTarget;
        const message = document.querySelector('#create-structure-message');
        const submit = form.querySelector('button[type="submit"]');
        if (!message || !submit) return;

        message.className = 'message';
        message.textContent = '';
        submit.disabled = true;

        try {
            const response = await fetch('api/create_structure.php', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({
                    csrf_token: window.PTA_CONFIG.csrfToken,
                    code: document.querySelector('#new-structure-code').value,
                    nom: document.querySelector('#new-structure-name').value,
                    adresse: document.querySelector('#new-structure-address').value,
                    type_affectation: document.querySelector('#new-structure-type').value,
                }),
            });
            const data = await readJsonResponse(response);
            if (!response.ok) throw new Error(apiErrorMessage(data, 'Impossible de créer le lieu d’affectation.'));

            addStructureEverywhere(data.structure);
            addStructureSettingsRow(data.structure);
            form.reset();
            document.querySelector('#new-structure-type').value = 'PERISCOLAIRE';
            message.className = 'message message-success';
            message.textContent = data.message;
            PTA.modules.coverage?.refresh?.({ silent: true });
        } catch (error) {
            message.className = 'message message-error';
            message.textContent = error.message;
        } finally {
            submit.disabled = false;
        }
    }

    async function createAgent(event) {
        event.preventDefault();
        const form = event.currentTarget;
        const message = document.querySelector('#create-agent-message');
        const submit = form.querySelector('button[type="submit"]');
        if (!message || !submit) return;

        message.className = 'message';
        message.textContent = '';
        submit.disabled = true;

        try {
            const response = await fetch('api/create_agent.php', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({
                    csrf_token: window.PTA_CONFIG.csrfToken,
                    matricule: document.querySelector('#new-agent-matricule').value,
                    nom: document.querySelector('#new-agent-name').value,
                    prenom: document.querySelector('#new-agent-firstname').value,
                    email: document.querySelector('#new-agent-email').value,
                    telephone: document.querySelector('#new-agent-phone').value,
                    adresse: document.querySelector('#new-agent-address').value,
                    est_diplome: document.querySelector('#new-agent-qualified').value === '1',
                    diplome_libelle: document.querySelector('#new-agent-diploma').value,
                    structure_id: Number(document.querySelector('#new-agent-structure').value),
                    quotite_travail: Number(document.querySelector('#new-agent-rate').value),
                    date_debut_contrat: document.querySelector('#new-agent-contract-start').value,
                    date_fin_contrat: document.querySelector('#new-agent-contract-end').value,
                    id_poste: Number(document.querySelector('#new-agent-post').value),
                    type_contrat: document.querySelector('#new-agent-contract-type').value,
                    formation_repartition_annuelle: document.querySelector('#new-agent-training-planned').checked,
                    commentaire_pta: document.querySelector('#new-agent-pta-comment').value,
                }),
            });
            const data = await readJsonResponse(response);
            if (!response.ok) throw new Error(apiErrorMessage(data, 'Impossible de créer l’agent.'));

            addAgentEverywhere(data.agent);
            const createdStructureId = String(data.agent.id_structure);
            form.reset();
            document.querySelector('#new-agent-rate').value = '100';
            document.querySelector('#new-agent-contract-type').value = 'PERMANENT';
            document.querySelector('#new-agent-training-planned').checked = false;
            document.querySelector('#new-agent-qualified').value = '0';
            toggleDiplomaField(document.querySelector('#new-agent-qualified'), document.querySelector('#new-agent-diploma'));

            message.className = 'message message-success';
            message.textContent = `${data.message} Quota annuel : ${formatDuration(Number(data.agent.quota_cible_minutes))}, suivi du 1er janvier au 31 décembre.`;

            if (structureSelect?.value === createdStructureId) {
                await PTA.modules.planning?.loadAgents?.();
            }
            if (document.querySelector('#overview-structure')?.value === createdStructureId) {
                await PTA.modules.structureOverview?.load?.();
            }
        } catch (error) {
            message.className = 'message message-error';
            message.textContent = error.message;
        } finally {
            submit.disabled = false;
        }
    }

    function init() {
        document.querySelector('#agent-assignment-body')?.addEventListener('click', (event) => {
            const button = event.target.closest('.edit-agent-profile');
            if (button) openAgentProfileModal(button.closest('tr[data-agent-id]'));
        });

        document.querySelector('#structure-settings-body')?.addEventListener('click', (event) => {
            const button = event.target.closest('.save-structure-type');
            if (button) saveStructureType(button);
        });

        document.querySelector('#new-agent-qualified')?.addEventListener('change', (event) => {
            toggleDiplomaField(event.currentTarget, document.querySelector('#new-agent-diploma'));
        });
        document.querySelector('#edit-agent-profile-qualified')?.addEventListener('change', (event) => {
            toggleDiplomaField(event.currentTarget, document.querySelector('#edit-agent-profile-diploma'));
        });

        document.querySelector('#close-agent-profile-modal')?.addEventListener('click', closeAgentProfileModal);
        document.querySelector('#cancel-agent-profile')?.addEventListener('click', closeAgentProfileModal);
        document.querySelector('#agent-profile-modal')?.addEventListener('click', (event) => {
            if (event.target.id === 'agent-profile-modal') closeAgentProfileModal();
        });
        document.querySelector('#agent-profile-form')?.addEventListener('submit', saveAgentProfile);

        document.querySelector('#create-structure-form')?.addEventListener('submit', createStructure);
        document.querySelector('#create-agent-form')?.addEventListener('submit', createAgent);

        toggleDiplomaField(document.querySelector('#new-agent-qualified'), document.querySelector('#new-agent-diploma'));
    }

    PTA.modules.administration = {
        init,
        saveAgentStructure,
        saveStructureType,
        addStructureEverywhere,
        addAgentEverywhere,
        openAgentProfileModal,
    };
})();