@{
    ViewData["Title"] = "IT Request Assignments";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<!-- Bootstrap Icons (remove if already added in _Layout) -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css" />

<style>
    .card {
        border-radius: 14px;
        box-shadow: 0 6px 18px rgba(0,0,0,.06);
        border: 0;
    }

    .card-header {
        background: #f9fbff;
        border-bottom: 1px solid #eef2f7;
        border-top-left-radius: 14px;
        border-top-right-radius: 14px;
    }

    .table-container {
        background: #fff;
        border-radius: 14px;
        box-shadow: 0 6px 18px rgba(0,0,0,.06);
        padding: 16px;
    }

    .form-text {
        font-size: 12px;
        color: #6c757d;
    }

    .w-110 {
        width: 110px;
    }

    /* === Lists & chips (shared by IT Team & Managers) === */
    .it-card .card-header {
        background: #f8faff;
    }

    .it-list {
        max-height: 280px;
        overflow: auto;
        border: 1px solid #eef2f7;
        border-radius: 10px;
        padding: 6px;
        background: #fff;
    }

    .it-item {
        display: flex;
        align-items: center;
        gap: .5rem;
        padding: 6px 8px;
        border-radius: 8px;
        cursor: pointer;
    }

        .it-item:hover {
            background: #f7f9fc;
        }

        .it-item input {
            transform: translateY(1px);
        }

    .it-name {
        font-weight: 600;
        color: #334155;
    }

    .it-selected {
        min-height: 48px;
        border: 1px dashed #dbe3ef;
        background: #fbfdff;
        border-radius: 10px;
        padding: 8px;
    }

    .chip {
        display: inline-flex;
        align-items: center;
        gap: .4rem;
        padding: .28rem .5rem;
        margin: 4px;
        border-radius: 999px;
        background: #eef2ff;
        color: #3949ab;
        font-weight: 600;
        font-size: 12px;
    }

    .chip-x {
        border: 0;
        background: transparent;
        color: #6b7280;
        line-height: 1;
        font-size: 16px;
        padding: 0 2px;
        cursor: pointer;
    }

        .chip-x:hover {
            color: #111827;
        }
</style>

<div id="flowApp" style="max-width:1200px; margin:auto; font-size:13px;">

    <!-- ===================== FLOWS CARD ===================== -->
    <div class="card mb-3">
        <div class="card-header d-flex justify-content-between align-items-center">
            <h5 class="m-0">Approval Flows</h5>
            <div>
                <button class="btn btn-primary btn-sm" @@click="openCreate">New Flow</button>
                <button class="btn btn-outline-secondary btn-sm ms-2" @@click="load">Refresh</button>
            </div>
        </div>
        <div class="card-body">
            <div v-if="error" class="alert alert-danger py-2">{{ error }}</div>
            <div v-if="busy" class="alert alert-secondary py-2">Loading…</div>

            <div class="table-container table-responsive">
                <table class="table table-bordered table-sm table-striped align-middle text-center">
                    <thead class="table-light">
                        <tr>
                            <th class="w-110">Flow ID</th>
                            <th>Flow Name</th>
                            <th>HOD</th>
                            <th>Group IT HOD</th>
                            <th>FIN HOD</th>
                            <th>MGMT</th>
                            <th style="width:200px;">Action</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr v-for="f in flows" :key="f.itApprovalFlowId">
                            <td>{{ f.itApprovalFlowId }}</td>
                            <td class="text-start">{{ f.flowName }}</td>
                            <td>{{ f.hodUserId ? `${f.hodUserId} — ${resolveUserName(f.hodUserId)}` : '-' }}</td>
                            <td>{{ f.groupItHodUserId ? `${f.groupItHodUserId} — ${resolveUserName(f.groupItHodUserId)}` : '-' }}</td>
                            <td>{{ f.finHodUserId ? `${f.finHodUserId} — ${resolveUserName(f.finHodUserId)}` : '-' }}</td>
                            <td>{{ f.mgmtUserId ? `${f.mgmtUserId} — ${resolveUserName(f.mgmtUserId)}` : '-' }}</td>
                            <td>
                                <div class="btn-group">
                                    <button class="btn btn-sm btn-outline-primary" @@click="openEdit(f)">Edit</button>
                                    <button class="btn btn-sm btn-outline-danger" @@click="del(f)">Delete</button>
                                </div>
                            </td>
                        </tr>
                        <tr v-if="!flows.length && !busy">
                            <td colspan="7" class="text-muted">No flows yet. Click “New Flow”.</td>
                        </tr>
                    </tbody>
                </table>
            </div>

            <div class="mt-2 text-muted">
                <small>
                    Heads up: <code>/ItRequestAPI/create</code> uses the first flow in the DB. Make sure one exists w/ approvers.
                </small>
            </div>
        </div>
    </div>

    <!-- ===================== IT TEAM CARD ===================== -->
    <div class="card mt-3 it-card">
        <div class="card-header d-flex justify-content-between align-items-center">
            <h6 class="m-0">IT Team Members</h6>
            <button class="btn btn-sm btn-primary" @@click="saveItTeam" :disabled="savingTeam">
                {{ savingTeam ? 'Saving…' : 'Save' }}
            </button>
        </div>

        <div class="card-body">
            <div class="text-muted mb-3">
                <small>Select existing users to mark them as IT Team (they can edit Section B + do IT acceptance).</small>
            </div>

            <div class="row g-3 align-items-start">
                <!-- LEFT -->
                <div class="col-md-7">
                    <div class="input-group input-group-sm mb-2">
                        <span class="input-group-text"><i class="bi bi-search"></i></span>
                        <input type="text" class="form-control" placeholder="Search users by name…" v-model.trim="itSearch">
                    </div>

                    <div class="it-list">
                        <label v-for="u in filteredUsers" :key="'avail-'+u.id" class="it-item">
                            <input type="checkbox" :value="u.id" v-model="itTeamUserIds">
                            <span class="it-name">{{ u.name }}</span>
                        </label>
                        <div v-if="!filteredUsers.length" class="text-muted small p-2">No users match your search.</div>
                    </div>
                </div>

                <!-- RIGHT -->
                <div class="col-md-5">
                    <div class="d-flex justify-content-between align-items-center mb-2">
                        <strong>Selected ({{ selectedUsers.length }})</strong>
                        <button class="btn btn-link btn-sm text-decoration-none"
                                @@click="itTeamUserIds = []"
                                :disabled="!selectedUsers.length">
                            Clear all
                        </button>
                    </div>

                    <div class="it-selected">
                        <span v-for="u in selectedUsers" :key="'sel-'+u.id" class="chip">
                            {{ u.name }}
                            <button class="chip-x" @@click="removeIt(u.id)" aria-label="Remove">&times;</button>
                        </span>
                        <div v-if="!selectedUsers.length" class="text-muted small">Nobody selected yet.</div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- ===================== REQUEST FORM MANAGERS CARD ===================== -->
    <div class="card mt-3 it-card">
        <div class="card-header d-flex justify-content-between align-items-center">
            <h6 class="m-0">Request Form Managers</h6>
            <button class="btn btn-sm btn-primary" @@click="saveFormManagers" :disabled="savingManagers">
                {{ savingManagers ? 'Saving…' : 'Save' }}
            </button>
        </div>

        <div class="card-body">
            <div class="text-muted mb-3">
                <small>Select users who can access Assignings/Admin features (manage request assignments, etc.).</small>
            </div>

            <div class="row g-3 align-items-start">
                <!-- LEFT -->
                <div class="col-md-7">
                    <div class="input-group input-group-sm mb-2">
                        <span class="input-group-text"><i class="bi bi-search"></i></span>
                        <input type="text" class="form-control" placeholder="Search users by name…" v-model.trim="rfmSearch">
                    </div>

                    <div class="it-list">
                        <label v-for="u in filteredUsersForManagers" :key="'rfm-avail-'+u.id" class="it-item">
                            <input type="checkbox" :value="u.id" v-model="rfmUserIds">
                            <span class="it-name">{{ u.name }}</span>
                        </label>
                        <div v-if="!filteredUsersForManagers.length" class="text-muted small p-2">No users match your search.</div>
                    </div>
                </div>

                <!-- RIGHT -->
                <div class="col-md-5">
                    <div class="d-flex justify-content-between align-items-center mb-2">
                        <strong>Selected ({{ selectedManagers.length }})</strong>
                        <button class="btn btn-link btn-sm text-decoration-none"
                                @@click="rfmUserIds = []"
                                :disabled="!selectedManagers.length">
                            Clear all
                        </button>
                    </div>

                    <div class="it-selected">
                        <span v-for="u in selectedManagers" :key="'rfm-sel-'+u.id" class="chip">
                            {{ u.name }}
                            <button class="chip-x" @@click="removeRfm(u.id)" aria-label="Remove">&times;</button>
                        </span>
                        <div v-if="!selectedManagers.length" class="text-muted small">Nobody selected yet.</div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- ===================== FLOW MODAL ===================== -->
    <div class="modal fade" id="flowModal" tabindex="-1" aria-hidden="true" ref="modal">
        <div class="modal-dialog">
            <div class="modal-content">
                <div class="modal-header">
                    <h6 class="modal-title">{{ form.itApprovalFlowId ? 'Edit Flow' : 'Create Flow' }}</h6>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close" @@click="closeModal"></button>
                </div>
                <div class="modal-body">
                    <div v-if="formError" class="alert alert-danger py-2">{{ formError }}</div>

                    <div class="mb-2">
                        <label class="form-label">Flow Name</label>
                        <input class="form-control form-control-sm" v-model.trim="form.flowName" placeholder="e.g., Default Flow">
                    </div>

                    <div class="row g-2">
                        <div class="col-6">
                            <label class="form-label">HOD Approver</label>
                            <select class="form-select form-select-sm" v-model.number="form.hodUserId">
                                <option :value="null">— None —</option>
                                <option v-for="u in users" :key="'hod-'+u.id" :value="u.id">{{ u.name }}</option>
                            </select>
                            <div class="form-text">Approver for HOD stage</div>
                        </div>

                        <div class="col-6">
                            <label class="form-label">Group IT HOD</label>
                            <select class="form-select form-select-sm" v-model.number="form.groupItHodUserId">
                                <option :value="null">— None —</option>
                                <option v-for="u in users" :key="'git-'+u.id" :value="u.id">{{ u.name }}</option>
                            </select>
                            <div class="form-text">Approver for Group IT HOD</div>
                        </div>

                        <div class="col-6">
                            <label class="form-label">Finance HOD</label>
                            <select class="form-select form-select-sm" v-model.number="form.finHodUserId">
                                <option :value="null">— None —</option>
                                <option v-for="u in users" :key="'fin-'+u.id" :value="u.id">{{ u.name }}</option>
                            </select>
                            <div class="form-text">Approver for Finance HOD</div>
                        </div>

                        <div class="col-6">
                            <label class="form-label">Management</label>
                            <select class="form-select form-select-sm" v-model.number="form.mgmtUserId">
                                <option :value="null">— None —</option>
                                <option v-for="u in users" :key="'mgmt-'+u.id" :value="u.id">{{ u.name }}</option>
                            </select>
                            <div class="form-text">Final management approver</div>
                        </div>
                    </div>
                </div>
                <div class="modal-footer">
                    <button class="btn btn-secondary btn-sm" data-bs-dismiss="modal" @@click="closeModal">Cancel</button>
                    <button class="btn btn-primary btn-sm" :disabled="saving" @@click="save">
                        {{ saving ? 'Saving…' : 'Save' }}
                    </button>
                </div>
            </div>
        </div>
    </div>

</div>

<script>
    const flowApp = Vue.createApp({
        data() {
            return {
                flows: [],
                users: [],              // all users for display (id + name)
                // IT Team state
                itTeamUserIds: [],
                itSearch: '',
                savingTeam: false,
                // Request Form Managers state
                rfmUserIds: [],
                rfmSearch: '',
                savingManagers: false,
                // UI state
                busy: false,
                error: null,
                saving: false,
                formError: null,
                form: {
                    itApprovalFlowId: null,
                    flowName: '',
                    hodUserId: null,
                    groupItHodUserId: null,
                    finHodUserId: null,
                    mgmtUserId: null
                },
                bsModal: null
            };
        },
        computed: {
            /* IT Team list filter */
            filteredUsers() {
                const q = (this.itSearch || '').toLowerCase();
                if (!q) return this.users;
                return this.users.filter(u => (u.name || '').toLowerCase().includes(q));
            },
            selectedUsers() {
                const set = new Set(this.itTeamUserIds);
                return this.users.filter(u => set.has(u.id));
            },
            /* Managers list filter */
            filteredUsersForManagers() {
                const q = (this.rfmSearch || '').toLowerCase();
                if (!q) return this.users;
                return this.users.filter(u => (u.name || '').toLowerCase().includes(q));
            },
            selectedManagers() {
                const set = new Set(this.rfmUserIds);
                return this.users.filter(u => set.has(u.id));
            }
        },
        methods: {
            /* ===== Flows ===== */
            async load() {
                try {
                    this.busy = true; this.error = null;
                    const r = await fetch('/ItRequestAPI/flows');
                    if (!r.ok) throw new Error(`Load failed (${r.status})`);
                    const data = await r.json();
                    this.flows = Array.isArray(data)
                        ? data.map(x => ({
                            itApprovalFlowId: x.itApprovalFlowId ?? x.ItApprovalFlowId,
                            flowName: x.flowName ?? x.FlowName,
                            hodUserId: x.hodUserId ?? x.HodUserId,
                            groupItHodUserId: x.groupItHodUserId ?? x.GroupItHodUserId,
                            finHodUserId: x.finHodUserId ?? x.FinHodUserId,
                            mgmtUserId: x.mgmtUserId ?? x.MgmtUserId
                        }))
                        : [];
                } catch (e) {
                    this.error = e.message || 'Failed to load flows.';
                } finally {
                    this.busy = false;
                }
            },
            async loadUsers() {
                const res = await fetch('/ItRequestAPI/users');
                this.users = await res.json();
            },
            resolveUserName(id) {
                const u = this.users.find(x => x.id === id);
                return u ? u.name : '(unknown)';
            },
            openCreate() {
                this.formError = null;
                this.form = { itApprovalFlowId: null, flowName: '', hodUserId: null, groupItHodUserId: null, finHodUserId: null, mgmtUserId: null };
                this.showModal();
                this.loadUsers();
            },
            openEdit(f) {
                this.formError = null;
                this.form = JSON.parse(JSON.stringify(f));
                this.showModal();
                this.loadUsers();
            },
            async save() {
                try {
                    if (this.saving) return;
                    this.saving = true; this.formError = null;

                    if (!this.form.flowName || !this.form.flowName.trim()) {
                        this.formError = 'Flow name is required.'; this.saving = false; return;
                    }

                    const payload = {
                        flowName: this.form.flowName.trim(),
                        hodUserId: this.nullIfEmpty(this.form.hodUserId),
                        groupItHodUserId: this.nullIfEmpty(this.form.groupItHodUserId),
                        finHodUserId: this.nullIfEmpty(this.form.finHodUserId),
                        mgmtUserId: this.nullIfEmpty(this.form.mgmtUserId)
                    };

                    let res;
                    if (this.form.itApprovalFlowId) {
                        res = await fetch(`/ItRequestAPI/flows/${this.form.itApprovalFlowId}`, {
                            method: 'PUT',
                            headers: { 'Content-Type': 'application/json' },
                            body: JSON.stringify(payload)
                        });
                    } else {
                        res = await fetch('/ItRequestAPI/flows', {
                            method: 'POST',
                            headers: { 'Content-Type': 'application/json' },
                            body: JSON.stringify(payload)
                        });
                    }
                    if (!res.ok) {
                        const j = await res.json().catch(() => ({}));
                        throw new Error(j.message || `Save failed (${res.status})`);
                    }
                    await this.load();
                    this.closeModal();
                } catch (e) {
                    this.formError = e.message || 'Unable to save flow.';
                } finally {
                    this.saving = false;
                }
            },
            async del(f) {
                if (!confirm(`Delete flow "${f.flowName}"?`)) return;
                try {
                    const r = await fetch(`/ItRequestAPI/flows/${f.itApprovalFlowId}`, { method: 'DELETE' });
                    if (!r.ok) {
                        const j = await r.json().catch(() => ({}));
                        throw new Error(j.message || `Delete failed (${r.status})`);
                    }
                    await this.load();
                } catch (e) {
                    alert(e.message || 'Delete failed.');
                }
            },
            nullIfEmpty(v) {
                if (v === undefined || v === null || v === '') return null;
                const n = Number(v);
                return Number.isFinite(n) ? n : null;
            },
            showModal() {
                const el = document.getElementById('flowModal');
                this.bsModal = new bootstrap.Modal(el);
                this.bsModal.show();
            },
            closeModal() { if (this.bsModal) this.bsModal.hide(); },

            /* ===== IT Team endpoints ===== */
            async loadItTeam() {
                const r = await fetch('/ItRequestAPI/itTeam');
                this.itTeamUserIds = await r.json(); // array<int>
            },
            async saveItTeam() {
                try {
                    this.savingTeam = true;
                    const r = await fetch('/ItRequestAPI/itTeam', {
                        method: 'POST',
                        headers: { 'Content-Type': 'application/json' },
                        body: JSON.stringify({ userIds: this.itTeamUserIds })
                    });
                    if (!r.ok) {
                        const j = await r.json().catch(() => ({}));
                        throw new Error(j.message || `Save failed (${r.status})`);
                    }
                    alert('IT Team updated.');
                } catch (e) {
                    alert(e.message || 'Failed to update IT Team.');
                } finally {
                    this.savingTeam = false;
                }
            },
            removeIt(uid) {
                this.itTeamUserIds = this.itTeamUserIds.filter(id => id !== uid);
            },

            /* ===== Request Form Managers endpoints ===== */
            async loadFormManagers() {
                const r = await fetch('/ItRequestAPI/formManagers');
                this.rfmUserIds = await r.json(); // array<int>
            },
            async saveFormManagers() {
                try {
                    this.savingManagers = true;
                    const r = await fetch('/ItRequestAPI/formManagers', {
                        method: 'POST',
                        headers: { 'Content-Type': 'application/json' },
                        body: JSON.stringify({ userIds: this.rfmUserIds })
                    });
                    if (!r.ok) {
                        const j = await r.json().catch(() => ({}));
                        throw new Error(j.message || `Save failed (${r.status})`);
                    }
                    alert('Request Form Managers updated.');
                } catch (e) {
                    alert(e.message || 'Failed to update Request Form Managers.');
                } finally {
                    this.savingManagers = false;
                }
            },
            removeRfm(uid) {
                this.rfmUserIds = this.rfmUserIds.filter(id => id !== uid);
            }
        },
        async mounted() {
            await Promise.all([
                this.load(),
                this.loadUsers(),
                this.loadItTeam(),
                this.loadFormManagers()
            ]);
        }
    });
    flowApp.mount('#flowApp');
</script>