// Shared Environments Mithril Component
const SharedEnvironments = {
    environments: [],
    linkedFunctions: {},
    envEditor: null,
    modal: {
        isOpen: false,
        type: null, // 'create', 'edit', or 'link'
        envId: null,
        envName: '',
        envDescription: '',
        envData: {}
    },
    linkModal: {
        isOpen: false,
        envId: null,
        envName: '',
        availableHttp: [],
        availableTimer: [],
        selectedHttp: '',
        selectedTimer: ''
    },
    expandedEnvs: new Set(),

    oninit: function(vnode) {
        // Use initial data if provided, otherwise load from API
        if (vnode.attrs.initialEnvironments && vnode.attrs.initialEnvironments.length >= 0) {
            SharedEnvironments.environments = vnode.attrs.initialEnvironments;
            // Load linked functions for each environment
            for (const env of SharedEnvironments.environments) {
                SharedEnvironments.loadLinkedFunctions(env.id);
            }
        } else {
            this.loadEnvironments();
        }
    },

    initAceEditor: function() {
        // Initialize Ace editor if not already done
        if (!SharedEnvironments.envEditor) {
            setTimeout(() => {
                const editorEl = document.getElementById("envEditor");
                if (editorEl && !SharedEnvironments.envEditor) {
                    SharedEnvironments.envEditor = ace.edit("envEditor");
                    SharedEnvironments.envEditor.setTheme("ace/theme/github_dark");
                    SharedEnvironments.envEditor.session.setMode("ace/mode/json");
                    SharedEnvironments.envEditor.setOptions({
                        fontSize: "14px",
                        showPrintMargin: false
                    });
                }
            }, 100);
        }
    },

    loadEnvironments: async function() {
        try {
            const response = await m.request({
                method: "GET",
                url: "/shared_env/list"
            });
            SharedEnvironments.environments = response.environments || [];
            
            // Load linked functions for each environment
            for (const env of SharedEnvironments.environments) {
                await SharedEnvironments.loadLinkedFunctions(env.id);
            }
            m.redraw();
        } catch (err) {
            console.error('Failed to load environments:', err);
        }
    },

    loadLinkedFunctions: async function(envId) {
        try {
            const response = await m.request({
                method: "GET",
                url: `/shared_env/${envId}/linked-functions`
            });
            SharedEnvironments.linkedFunctions[envId] = response;
        } catch (err) {
            console.error(`Failed to load linked functions for env ${envId}:`, err);
        }
    },

    openCreateModal: function() {
        SharedEnvironments.modal = {
            isOpen: true,
            type: 'create',
            envId: null,
            envName: '',
            envDescription: '',
            envData: {}
        };
        SharedEnvironments.initAceEditor();
        setTimeout(() => {
            if (SharedEnvironments.envEditor) {
                SharedEnvironments.envEditor.setValue('{\n  \n}', -1);
            }
        }, 150);
    },

    openEditModal: function(env) {
        SharedEnvironments.modal = {
            isOpen: true,
            type: 'edit',
            envId: env.id,
            envName: env.name,
            envDescription: env.description || '',
            envData: env.environment
        };
        SharedEnvironments.initAceEditor();
        setTimeout(() => {
            if (SharedEnvironments.envEditor) {
                SharedEnvironments.envEditor.setValue(JSON.stringify(env.environment, null, 2), -1);
            }
        }, 150);
    },

    closeModal: function() {
        SharedEnvironments.modal.isOpen = false;
    },

    saveEnvironment: async function(e) {
        e.preventDefault();
        
        const envJson = SharedEnvironments.envEditor.getValue().trim();
        let parsedEnv;
        try {
            parsedEnv = JSON.parse(envJson);
        } catch (err) {
            alert('Invalid JSON: ' + err.message);
            return;
        }

        const url = SharedEnvironments.modal.type === 'edit' 
            ? `/shared_env/${SharedEnvironments.modal.envId}`
            : '/shared_env/new';
        const method = SharedEnvironments.modal.type === 'edit' ? 'PUT' : 'POST';

        try {
            await m.request({
                method: method,
                url: url,
                body: {
                    name: SharedEnvironments.modal.envName,
                    description: SharedEnvironments.modal.envDescription,
                    environment: envJson
                }
            });
            SharedEnvironments.closeModal();
            await SharedEnvironments.loadEnvironments();
        } catch (err) {
            alert('Error: ' + (err.message || 'Failed to save'));
        }
    },

    deleteEnvironment: async function(env) {
        if (!confirm(`Are you sure you want to delete "${env.name}"?\n\nThis will remove it from all linked functions.`)) {
            return;
        }

        try {
            await m.request({
                method: 'DELETE',
                url: `/shared_env/${env.id}`
            });
            await SharedEnvironments.loadEnvironments();
        } catch (err) {
            alert('Error: ' + (err.message || 'Failed to delete'));
        }
    },

    toggleLinkedFunctions: function(envId) {
        if (SharedEnvironments.expandedEnvs.has(envId)) {
            SharedEnvironments.expandedEnvs.delete(envId);
        } else {
            SharedEnvironments.expandedEnvs.add(envId);
        }
    },

    openLinkModal: async function(envId, envName) {
        try {
            const response = await m.request({
                method: 'GET',
                url: `/shared_env/${envId}/available-functions`
            });
            SharedEnvironments.linkModal = {
                isOpen: true,
                envId: envId,
                envName: envName,
                availableHttp: response.http_functions || [],
                availableTimer: response.timer_functions || [],
                selectedHttp: '',
                selectedTimer: ''
            };
        } catch (err) {
            alert('Error loading available functions: ' + err.message);
        }
    },

    closeLinkModal: function() {
        SharedEnvironments.linkModal.isOpen = false;
    },

    linkFunction: async function() {
        const { envId, selectedHttp, selectedTimer } = SharedEnvironments.linkModal;
        
        if (!selectedHttp && !selectedTimer) {
            alert('Please select a function to link');
            return;
        }

        const functionId = selectedHttp || selectedTimer;
        const functionType = selectedHttp ? 'http' : 'timer';

        try {
            await m.request({
                method: 'POST',
                url: `/shared_env/${envId}/link-function`,
                body: { function_id: functionId, function_type: functionType }
            });
            SharedEnvironments.closeLinkModal();
            await SharedEnvironments.loadLinkedFunctions(envId);
        } catch (err) {
            alert('Error: ' + (err.message || 'Failed to link'));
        }
    },

    unlinkFunction: async function(envId, functionId, functionType) {
        try {
            await m.request({
                method: 'POST',
                url: `/shared_env/${envId}/unlink-function`,
                body: { function_id: functionId, function_type: functionType }
            });
            await SharedEnvironments.loadLinkedFunctions(envId);
        } catch (err) {
            alert('Error: ' + (err.message || 'Failed to unlink'));
        }
    },

    view: function() {
        return m("div.container.mx-auto.p-6.max-w-6xl", [
            // Header
            m("div.flex.items-center.justify-between.mb-6", [
                m("div", [
                    m("h1.text-3xl.font-bold.text-gray-900.dark:text-white", "Shared Environments"),
                    m("p.text-gray-600.dark:text-gray-400.mt-1", 
                        "Manage reusable environment configurations that can be injected into your functions")
                ]),
                m("button.bg-blue-600.hover:bg-blue-700.text-white.px-4.py-2.rounded-lg.flex.items-center.space-x-2", 
                    { onclick: () => SharedEnvironments.openCreateModal() },
                    [
                        m("svg.w-5.h-5[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M12 4v16m8-8H4]")
                        ),
                        m("span", "New Shared Environment")
                    ]
                )
            ]),

            // Environments list
            SharedEnvironments.environments.length > 0 
                ? m("div.grid.gap-4", SharedEnvironments.environments.map(env => 
                    SharedEnvironments.renderEnvironmentCard(env)
                ))
                : SharedEnvironments.renderEmptyState(),

            // Create/Edit Modal
            SharedEnvironments.modal.isOpen ? SharedEnvironments.renderModal() : null,

            // Link Modal
            SharedEnvironments.linkModal.isOpen ? SharedEnvironments.renderLinkModal() : null
        ]);
    },

    renderEnvironmentCard: function(env) {
        const linked = SharedEnvironments.linkedFunctions[env.id] || { http_functions: [], timer_functions: [] };
        const totalLinked = (linked.http_functions?.length || 0) + (linked.timer_functions?.length || 0);
        const isExpanded = SharedEnvironments.expandedEnvs.has(env.id);

        return m("div.bg-white.dark:bg-gray-800.rounded-lg.shadow.border.border-gray-200.dark:border-gray-700.p-6", [
            m("div.flex.items-start.justify-between", [
                m("div.flex-1", [
                    m("h3.text-xl.font-semibold.text-gray-900.dark:text-white.mb-1", env.name),
                    env.description ? m("p.text-gray-600.dark:text-gray-400.text-sm.mb-3", env.description) : null,
                    m("div.bg-gray-50.dark:bg-gray-900.rounded.p-3.font-mono.text-sm.overflow-x-auto",
                        m("pre.text-gray-800.dark:text-gray-200", JSON.stringify(env.environment, null, 2))
                    ),
                    m("div.mt-3.text-xs.text-gray-500.dark:text-gray-400", [
                        `Created: ${new Date(env.created_at).toLocaleString()}`,
                        env.updated_at && env.updated_at !== env.created_at 
                            ? ` | Updated: ${new Date(env.updated_at).toLocaleString()}`
                            : ''
                    ]),

                    // Linked Functions Section
                    m("div.mt-4.pt-4.border-t.border-gray-200.dark:border-gray-700", [
                        m("div.flex.items-center.justify-between.mb-2", [
                            m("button.flex.items-center.space-x-2.text-sm.font-medium.text-gray-700.dark:text-gray-300.hover:text-blue-600.dark:hover:text-blue-400.transition-colors",
                                { onclick: () => SharedEnvironments.toggleLinkedFunctions(env.id) },
                                [
                                    m(`svg.w-4.h-4.transition-transform${isExpanded ? '.rotate-90' : ''}[fill=none][stroke=currentColor][viewBox=0 0 24 24]`,
                                        m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M9 5l7 7-7 7]")
                                    ),
                                    m("span", `🔗 Linked Functions (${totalLinked})`)
                                ]
                            ),
                            m("button.text-sm.text-blue-600.hover:text-blue-800.dark:text-blue-400.dark:hover:text-blue-300.flex.items-center.space-x-1",
                                { onclick: () => SharedEnvironments.openLinkModal(env.id, env.name) },
                                [
                                    m("svg.w-4.h-4[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                                        m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M12 4v16m8-8H4]")
                                    ),
                                    m("span", "Link Function")
                                ]
                            )
                        ]),
                        isExpanded ? SharedEnvironments.renderLinkedFunctions(env.id, linked) : null
                    ])
                ]),
                m("div.flex.space-x-2.ml-4", [
                    m("button.text-blue-600.hover:text-blue-800.dark:text-blue-400.dark:hover:text-blue-300.p-2[title=Edit]",
                        { onclick: () => SharedEnvironments.openEditModal(env) },
                        m("svg.w-5.h-5[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z]")
                        )
                    ),
                    m("button.text-red-600.hover:text-red-800.dark:text-red-400.dark:hover:text-red-300.p-2[title=Delete]",
                        { onclick: () => SharedEnvironments.deleteEnvironment(env) },
                        m("svg.w-5.h-5[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16]")
                        )
                    )
                ])
            ])
        ]);
    },

    renderLinkedFunctions: function(envId, linked) {
        const httpFuncs = linked.http_functions || [];
        const timerFuncs = linked.timer_functions || [];
        
        if (httpFuncs.length === 0 && timerFuncs.length === 0) {
            return m("div.mt-3.text-sm.text-gray-500.dark:text-gray-400.italic", "No functions linked yet");
        }

        return m("div.mt-3.space-y-1", [
            ...httpFuncs.map(func => 
                m("div.flex.items-center.justify-between.bg-gray-100.dark:bg-gray-700.rounded.px-3.py-2", [
                    m("div.flex.items-center.space-x-2", [
                        m("svg.w-4.h-4.text-blue-500[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M21 12a9 9 0 01-9 9m9-9a9 9 0 00-9-9m9 9H3m9 9a9 9 0 01-9-9m9 9c1.657 0 3-4.03 3-9s-1.343-9-3-9m0 18c-1.657 0-3-4.03-3-9s1.343-9 3-9m-9 9a9 9 0 019-9]")
                        ),
                        m("span.text-sm.font-medium.text-gray-900.dark:text-white", func.name),
                        m("span.text-xs.text-gray-500.dark:text-gray-400", "(HTTP)")
                    ]),
                    m("button.text-red-600.hover:text-red-800.dark:text-red-400.dark:hover:text-red-300",
                        { onclick: () => SharedEnvironments.unlinkFunction(envId, func.id, 'http') },
                        m("svg.w-4.h-4[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M6 18L18 6M6 6l12 12]")
                        )
                    )
                ])
            ),
            ...timerFuncs.map(func => 
                m("div.flex.items-center.justify-between.bg-gray-100.dark:bg-gray-700.rounded.px-3.py-2", [
                    m("div.flex.items-center.space-x-2", [
                        m("svg.w-4.h-4.text-green-500[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z]")
                        ),
                        m("span.text-sm.font-medium.text-gray-900.dark:text-white", func.name),
                        m("span.text-xs.text-gray-500.dark:text-gray-400", "(Timer)")
                    ]),
                    m("button.text-red-600.hover:text-red-800.dark:text-red-400.dark:hover:text-red-300",
                        { onclick: () => SharedEnvironments.unlinkFunction(envId, func.id, 'timer') },
                        m("svg.w-4.h-4[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M6 18L18 6M6 6l12 12]")
                        )
                    )
                ])
            )
        ]);
    },

    renderEmptyState: function() {
        return m("div.text-center.py-12.bg-gray-50.dark:bg-gray-800.rounded-lg.border-2.border-dashed.border-gray-300.dark:border-gray-700", [
            m("svg.mx-auto.h-12.w-12.text-gray-400[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M20 13V6a2 2 0 00-2-2H6a2 2 0 00-2 2v7m16 0v5a2 2 0 01-2 2H6a2 2 0 01-2-2v-5m16 0h-2.586a1 1 0 00-.707.293l-2.414 2.414a1 1 0 01-.707.293h-3.172a1 1 0 01-.707-.293l-2.414-2.414A1 1 0 006.586 13H4]")
            ),
            m("h3.mt-2.text-sm.font-medium.text-gray-900.dark:text-white", "No shared environments"),
            m("p.mt-1.text-sm.text-gray-500.dark:text-gray-400", "Get started by creating a new shared environment"),
            m("div.mt-6",
                m("button.inline-flex.items-center.px-4.py-2.border.border-transparent.shadow-sm.text-sm.font-medium.rounded-md.text-white.bg-blue-600.hover:bg-blue-700",
                    { onclick: () => SharedEnvironments.openCreateModal() },
                    [
                        m("svg.-ml-1.mr-2.h-5.w-5[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M12 4v16m8-8H4]")
                        ),
                        "New Shared Environment"
                    ]
                )
            )
        ]);
    },

    renderModal: function() {
        return m("div.fixed.inset-0.bg-gray-600.bg-opacity-50.overflow-y-auto.h-full.w-full.z-50",
            { onclick: (e) => e.target === e.currentTarget && SharedEnvironments.closeModal() },
            m("div.relative.top-20.mx-auto.p-5.border.w-full.max-w-2xl.shadow-lg.rounded-md.bg-white.dark:bg-gray-800", [
                m("div.flex.items-center.justify-between.mb-4", [
                    m("h3.text-lg.font-medium.text-gray-900.dark:text-white", 
                        SharedEnvironments.modal.type === 'edit' ? 'Edit Shared Environment' : 'New Shared Environment'
                    ),
                    m("button.text-gray-400.hover:text-gray-600.dark:hover:text-gray-300",
                        { onclick: () => SharedEnvironments.closeModal() },
                        m("svg.w-6.h-6[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M6 18L18 6M6 6l12 12]")
                        )
                    )
                ]),
                m("form.space-y-4", { onsubmit: SharedEnvironments.saveEnvironment }, [
                    m("div", [
                        m("label.block.text-sm.font-medium.text-gray-700.dark:text-gray-300.mb-1", [
                            "Name ",
                            m("span.text-red-500", "*")
                        ]),
                        m("input.w-full.px-3.py-2.border.border-gray-300.dark:border-gray-600.rounded-md.dark:bg-gray-700.dark:text-white[type=text][required][placeholder=e.g., apiConfig, database]",
                            {
                                value: SharedEnvironments.modal.envName,
                                oninput: (e) => SharedEnvironments.modal.envName = e.target.value
                            }
                        ),
                        m("p.mt-1.text-xs.text-gray-500", "This becomes the namespace key (e.g., environment.apiConfig)")
                    ]),
                    m("div", [
                        m("label.block.text-sm.font-medium.text-gray-700.dark:text-gray-300.mb-1", "Description"),
                        m("input.w-full.px-3.py-2.border.border-gray-300.dark:border-gray-600.rounded-md.dark:bg-gray-700.dark:text-white[type=text][placeholder=Brief description of this shared environment]",
                            {
                                value: SharedEnvironments.modal.envDescription,
                                oninput: (e) => SharedEnvironments.modal.envDescription = e.target.value
                            }
                        )
                    ]),
                    m("div", [
                        m("label.block.text-sm.font-medium.text-gray-700.dark:text-gray-300.mb-1", [
                            "Environment JSON ",
                            m("span.text-red-500", "*")
                        ]),
                        m("div#envEditor.border.border-gray-300.dark:border-gray-600.rounded-md[style=height: 300px]")
                    ]),
                    m("div.flex.justify-end.space-x-3.pt-4", [
                        m("button.px-4.py-2.border.border-gray-300.dark:border-gray-600.rounded-md.text-gray-700.dark:text-gray-300.hover:bg-gray-50.dark:hover:bg-gray-700[type=button]",
                            { onclick: () => SharedEnvironments.closeModal() },
                            "Cancel"
                        ),
                        m("button.px-4.py-2.bg-blue-600.text-white.rounded-md.hover:bg-blue-700[type=submit]",
                            SharedEnvironments.modal.type === 'edit' ? 'Update' : 'Create'
                        )
                    ])
                ])
            ])
        );
    },

    renderLinkModal: function() {
        return m("div.fixed.inset-0.bg-gray-600.bg-opacity-50.overflow-y-auto.h-full.w-full.z-50",
            { onclick: (e) => e.target === e.currentTarget && SharedEnvironments.closeLinkModal() },
            m("div.relative.top-20.mx-auto.p-5.border.w-full.max-w-lg.shadow-lg.rounded-md.bg-white.dark:bg-gray-800", [
                m("div.flex.items-center.justify-between.mb-4", [
                    m("h3.text-lg.font-medium.text-gray-900.dark:text-white", [
                        "Link Function to ",
                        m("span.text-blue-600.dark:text-blue-400", SharedEnvironments.linkModal.envName)
                    ]),
                    m("button.text-gray-400.hover:text-gray-600.dark:hover:text-gray-300",
                        { onclick: () => SharedEnvironments.closeLinkModal() },
                        m("svg.w-6.h-6[fill=none][stroke=currentColor][viewBox=0 0 24 24]",
                            m("path[stroke-linecap=round][stroke-linejoin=round][stroke-width=2][d=M6 18L18 6M6 6l12 12]")
                        )
                    )
                ]),
                m("div.space-y-4", [
                    m("div", [
                        m("label.block.text-sm.font-medium.text-gray-700.dark:text-gray-300.mb-2", "HTTP Functions"),
                        m("select.w-full.px-3.py-2.border.border-gray-300.dark:border-gray-600.rounded-md.dark:bg-gray-700.dark:text-white",
                            {
                                value: SharedEnvironments.linkModal.selectedHttp,
                                onchange: (e) => {
                                    SharedEnvironments.linkModal.selectedHttp = e.target.value;
                                    SharedEnvironments.linkModal.selectedTimer = '';
                                }
                            },
                            [
                                m("option[value=]", "Select an HTTP function..."),
                                ...SharedEnvironments.linkModal.availableHttp.map(func =>
                                    m("option", { value: func.id }, func.name)
                                )
                            ]
                        )
                    ]),
                    m("div", [
                        m("label.block.text-sm.font-medium.text-gray-700.dark:text-gray-300.mb-2", "Timer Functions"),
                        m("select.w-full.px-3.py-2.border.border-gray-300.dark:border-gray-600.rounded-md.dark:bg-gray-700.dark:text-white",
                            {
                                value: SharedEnvironments.linkModal.selectedTimer,
                                onchange: (e) => {
                                    SharedEnvironments.linkModal.selectedTimer = e.target.value;
                                    SharedEnvironments.linkModal.selectedHttp = '';
                                }
                            },
                            [
                                m("option[value=]", "Select a timer function..."),
                                ...SharedEnvironments.linkModal.availableTimer.map(func =>
                                    m("option", { value: func.id }, func.name)
                                )
                            ]
                        )
                    ]),
                    m("div.flex.justify-end.space-x-3.pt-4", [
                        m("button.px-4.py-2.border.border-gray-300.dark:border-gray-600.rounded-md.text-gray-700.dark:text-gray-300.hover:bg-gray-50.dark:hover:bg-gray-700",
                            { onclick: () => SharedEnvironments.closeLinkModal() },
                            "Cancel"
                        ),
                        m("button.px-4.py-2.bg-blue-600.text-white.rounded-md.hover:bg-blue-700",
                            { onclick: () => SharedEnvironments.linkFunction() },
                            "Link"
                        )
                    ])
                ])
            ])
        );
    }
};